leg	site	hole	core	coretype	section	top interval	bottom interval	piece	subpiece	unit number	sub unit	observer	rockname	texture	where sampled	grain size	phenocrysts observed	phenocrysts mineral name (1)	phenocrysts present persent (1)	phenocrysts original percent (1)	phenocrysts size (1)	phenocrysts composition (1)	phenocrysts morphology (1)	phenocrysts comments (1)	phenocrysts mineral name (2)	phenocrysts present persent (2)	phenocrysts original percent (2)	phenocrysts size (2)	phenocrysts composition (2)	phenocrysts morphology (2)	phenocrysts comments (2)	phenocrysts mineral name (3)	phenocrysts present persent (3)	phenocrysts original percent (3)	phenocrysts size (3)	phenocrysts composition (3)	phenocrysts morphology (3)	phenocrysts comments (3)	phenocrysts mineral name (4)	phenocrysts present persent (4)	phenocrysts original percent (4)	phenocrysts size (4)	phenocrysts composition (4)	phenocrysts morphology (4)	phenocrysts comments (4)	phenocrysts mineral name (5)	phenocrysts present persent (5)	phenocrysts original percent (5)	phenocrysts size (5)	phenocrysts composition (5)	phenocrysts morphology (5)	phenocrysts comments (5)	groundmass observed	groundmass mineral name (1)	groundmass present percent (1)	groundmass original percent (1)	groundmass size (1)	groundmass composition (1)	groundmass morphology (1)	groundmass comments (1)	groundmass mineral name (2)	groundmass present percent (2)	groundmass original percent (2)	groundmass size (2)	groundmass composition (2)	groundmass morphology (2)	groundmass comments (2)	groundmass mineral name (3)	groundmass present percent (3)	groundmass original percent (3)	groundmass size (3)	groundmass composition (3)	groundmass morphology (3)	groundmass comments (3)	groundmass mineral name (4)	groundmass present percent (4)	groundmass original percent (4)	groundmass size (4)	groundmass composition (4)	groundmass morphology (4)	groundmass comments (4)	groundmass mineral name (5)	groundmass present percent (5)	groundmass original percent (5)	groundmass size (5)	groundmass composition (5)	groundmass morphology (5)	groundmass comments (5)	vesicles oberserved	vesicles type code (1)	vesicles percent (1)	vesicles size (1)	vesicles location (1)	vesicles filling (1)	vesicles shape (1)	vesicles comments (1)	vesicles type code (2)	vesicles percent (2)	vesicles size (2)	vesicles location (2)	vesicles filling (2)	vesicles shape (2)	vesicles comments (2)	vesicles type code (3)	vesicles percent (3)	vesicles size (3)	vesicles location (3)	vesicles filling (3)	vesicles shape (3)	vesicles comments (3)	secondary mineraliztion observed	secondary mineral name (1)	secondary percent (1)	secondary replacement (1)	secondary comment (1)	secondary mineral name (2)	secondary percent (2)	secondary replacement (2)	secondary comment (2)	secondary mineral name (3)	secondary percent (3)	secondary replacement (3)	secondary comment (3)	secondary mineral name (4)	secondary percent (4)	secondary replacement (4)	secondary comment (4)	secondary mineral name (5)	secondary percent (5)	secondary replacement (5)	secondary comment (5)	secondary mineral name (6)	secondary percent (6)	secondary replacement (6)	secondary comment (6)	secondary mineral name (7)	secondary percent (7)	secondary replacement (7)	secondary comment (7)	secondary mineral name (8)	secondary percent (8)	secondary replacement (8)	secondary comment (8)	main comments	more data	latitude	longitude	depth	top interval depth	bottom interval depth
111	504	B	142	Rotary	01	006	008	001	A	0151		CMS	Moderately plagioclase clinopyroxene phyric basalt	Intergranular, subophitic	Unit 151	Fine		Plagioclase	8   	8   	0.2-2.0   	An 54	Euhedral, tabular	Occur as glomerocrysts and single crystals.  Sometimes together with cpx.  Strained (wavy extinction).	Clinopyroxene	1   	1    	1-2       	Diopside/Augite	Subhedral	Minor alteration to actinolite along cleavage traces.  Occurs as glomerocrysts with plag.		    	   	          					    	    	          					    	    	          					Plagioclase	35	41	150microns	An 45	Euhedral, bladed	Replaced in part by chlorite(?), clays.	Clinopyroxene	30	36	75microns		Subhedral	Replaced in part by clays(?), actinolite(?).	Olivine	none	3	75microns		Subhedral	Replaced by chlorite, talc, clays(?).	Magnetite	1	1	35microns		Subhedral										Vesicles	0						        							        								Clays	9	Plag.	Plag replaced, especially in vugs.	Chlorite	4	Olivine, plag.		Actinolite	3	Cpx	Especially in vugs.	Sphene	Tr	Magnetite(?)		Magnetite	8	Olivine, cpx	Especially in vugs.	Pyrite(?)	0.2	Olivine		Talc	0.8	Olivine, cpx		Chlorite, actinolite	Tr	Veins	Minor veins, 50 micron wide, of chlorite, actinolite, and possibly quartz, occur in the section.	Although the rock is generally fine grained, it has a patchy appearance with patches or "vugs" up to 2 mm in which alteration minerals, chlorite, magnetite, and clays, are concentrated.  Magnetite concentration in the matrix occurs around radiating plag laths and may represent devitrification of original glassy mesostasis.	yes	1.22685	-83.73030	1352.80	135286	
111	504	B	142	Rotary	01	009	012	001	R	0152		DIV	Highly plagioclase clinopyroxene olivine phyric basalt	Chilled margin, hypohyaline	Chilled margin, unit 152	Glass + phenocrysts. Hyaline.		Olivine	5   	9   	<0.5-2.5  	Fo 85	Euhedral-subhedral	Altered to 1) Mixed-layer clays + talc + magnetite; 2) Chlorite + talc + magnetite + actinolite.	Plagioclase	20  	20   	<0.1-2.8  	An 65(??)	Euhedral	Single crystals or glomerocrysts. Glass inclusions in centers.	Clinopyroxene	7   	7  	<0.5-2.5  	Augite/diopside Salitic	Euhedral, resorbed	Glomerocrysts with plag, and single crystals. Reaction with glass; 0.05 mm rims. Glass inclusions up to 50 microns. Basal twins common.		    	    	          					    	    	          					Glass	0	53	?		?	Now smectite + chlorite + oxides.	Plagioclase	2	12	20microns		Euhedral	Microlites.																							Vesicles	0						        							        								Clays	25	Ol, matrix	~ 2% replacing ol.	Chlorite	19.1	Ol, matrix	~ 1% replacing ol.	Actinolite	0.2	Ol	Replaces ol together with chlorite.	Sphene	(?)			Quartz	(?)			Oxides	21.5	Ol, matrix	Mainly magnetite and hematite. Replaces groundmass.	Talc	0.2	Ol	Replaces ol.	Chlorite	Tr	Veins	Chlorite filled fracture (0.5 mm) with quartz + minor actinolite + possible sulfide.	Phenocrysts of plag, plag + cpx, and plag + ol commonly occur in glomerocrysts. Cpx + ol are resorbed in places. Plag + cpx commonly have glass inclusions, 40-80 microns. Ol alteration occcured first along crystal margins and then along fractures. Phenocrysts are often broken. Chilled margin: Pyrite intergrown with chalcopyrite, chalcopyrite inclusions in pyrite, pyrite intergrown with magnetite, small pyrrhotite inclusions in pyrite. Thin section is taken at contact between two basaltic dike units. Unit 152 is clearly chilled compared to unit 151. Unit 152 shows altered glassy contact, 2 mm wide, grading into altered glassy mesostasis with microlites of plag. Oxide + smectite + chlorite alteration. Intrusion permissive since no rip-ups of older unit in chill. Cpx in reaction relationship with glass; resorbed margins and numerous glass inclusions. Plag phenocrysts (core An 65) show normal zoning towards outside third of crystals. Also have glass inclusions in centers.	no	1.22685	-83.73030	1352.80	135289	
111	504	B	142	Rotary	01	009	012	001	B	0151		CMS	Moderately plagioclase clinopyroxene phyric basalt	Subophitic (diabasic)	Contact unit 151	Fine to aphanitic		Plagioclase	6   	6   	0.3-1.0   	An 45	Euhedral-subhedral	Zone Marginal 1/10 of crystals.  Glomerocrysts.	Clinopyroxene	<1  	<1   	0.5       		Euhedral	Only one phenocryst represented.  Appears fresh.		    	   	          					    	    	          					    	    	          					Plagioclase	45	50	<0.1-0.5	An 40	Acicular, bladed	Altered in part to clays (+/- talc?).	Clinopyroxene	25	42	0.1	Augite	Stubby, subhedral	Altered to oxides/chlorite/clays.	Oxides	2	2	<0.1-0.2	Magnetite(?)	Anhedral																	Vesicles	0						        							        								Clays	6	Cpx, plag	Alteration predominantly of groundmass cpx, and some plag.	Chlorite	6	Cpx	Alteration of groudmass cpx.	Actinolite	<2	Cpx	Cpx in groudmass replaced in part.  Somewhat patchy distribution.	Sphene	<1	(?)	Small, euhedral, high relief crystals, possibly sphene in groudmass.	Oxides	7	Cpx	Patchy.  Occurs with chlorite in some aggregates, ~ 20-30% altered.  These patches ~ 1 mm.  Slightly finer grain size.  Generally due to alteration of cpx.													Unit 151.  This thin section is problably not representative of the unit.  Thre is no record of ol phenocrysts which are described in the lithological description.  Likewise for cpx.  Plag phenocrysts problably underestimated in lithological description.  In so far as plag concerned, almost seriate porphyritic since maximum groundmass plag is larger than minimum phenocryst.  See 111-504B-142R-1 (Piece 1A, 6-8 cm).  Note: patchy clots of oxides + chlorite + clays +/- actinolite may represent altered areas of finer groundmass.	no	1.22685	-83.73030	1352.80	135289	
111	504	B	142	Rotary	01	101	104	015		0153		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt basaltic	Cataclatsic (30-40% clasts)	Contact between dike + breccia unit 153	Very fine to fine		Olivine	<1  	<1  	</=1      		Subhedral	Single crystals. Glomerocrysts with plag.	Plagioclase	4   	6    	150u-1 mm 		Euhedral	Tabular. Glomercrysts. Recrystallized.	Clinopryoxene	<1  	<1 	1.5       		Subhedral	Fresh.		    	    	          					    	    	          					Clinopyroxene	70	70	<0.1		?	Fresh.	Plagioclase	20	20	<0.5		?																								Vesicles	0						        							        								Clays	Tr	Olivine, matrix	Some mixed-layer clays associated with talc in altered olivine and dispersed in the groundmass.	Zeolites	Tr	Plag, veins	Some broken plag in the chlorite cement seem replaced by zeolites.	Zeolites		Veins	Post-brecciation veins contain zeolite(?).	Chlorite	4	Olivine, talc, veins	Also occurs in the cement. Probable mixed-layer chlorite/clays and chlorite.	Albite	Tr	Plag	Partial replacement of plag.	Actinolite	1	Veins, matrix	Occurs in the matrix of coarse-grained clasts.	Sphene	Tr	Opaques	Often found replacing oxides. Probably occurs with chlorite in a 1 micron-wide vein.	Opaques	Tr	Opaques, olivine	Scarce pyrite. Rare chalcopyrite. Magnetite.	Greenish clasts of basltic breccia, at the contact with a dike, are cemented by chlorite. The chilled margin of the dike is brecciated. the size of the clasts is < 1mm - 1.5 cm. Olivine can be fresh as well as completely replaced by chlorite and/or talc; talc crystallized first. Plag is partially replaced by chlorite and actinolite along cleavage traces and cracks. Plag is also replaced by patches of albite. The groundmass is cryptocrystalline, partially replaced by mixed-layer clays.	no	1.22685	-83.73030	1352.80	135381	
111	504	B	142	Rotary	02	057	059	008	A	0153		DIV	Moderately plagioclase clinopyroxene phyric basalt	Subophitic	S.O. Unit 153	Fine		Plagioclase	4   	4   	0.5-2.0   		Euhedral, laths	Glassy and fluid inclusions. Some crystals show zonation. Partially altered to chlorite along fractures.	Clinopyroxene	3   	3    	0.5-2.5   		Euhedral,subhedral	Partially altered to actinolite(?) along fractures.		    	   	          					    	    	          					    	    	          					Plagioclase	30	32	<0.25		Euhedral	Partially altered to chlorite.	Clinopyroxene	25	26	<0.25		Anhedral	Partially altered to actinolite.	Olivine	0	30	<0.25		Anhedral	Totally altered to chlorite, mixed-layer clays, +/- talc, +/- pyrite.	Magnetite	5	5	<0.10		Euhedral-subhedral										Vesicles	0						        							        								Clays	15	Ol		Chlorite	15	Ol, plag		Actinolite	<0.5	Cpx		Talc	<0.5	Ol		Magnetite	2	Ol														< 0.25 mm-wide fracture filled by chlorite. Pyrite grains up to 100 microns, sometimes with inclusions of chalcopyrite (< 10 microns) wide. Traces of chalcopyrite (< 10 microns) wide in groundmass.	no	1.22685	-83.73030	1354.30	135487	
111	504	B	143	Rotary	01	002	004	001		0154		DIV	Highly plagioclase clinopyroxene olivine phyric basalt	Intergranular to subophitic	Top of unit 154	Fine		Olivine	0   	2   	0.3-2.0   		Euhedral	Replaced by chlorite + actinolite, or by mixed layer chlorite-smectite + talc + magnetite + pyrite.	Plagioclase	14  	15   	0.3-3.0   		Euhedral	Partially replaced by chlorite.	Clinopyroxene	5   	5  	0.3-5.0   		Subhedral	Rarely replaced partially by actinolite.		    	    	          					    	    	          					Plagioclase	30	30	<0.02		Euhedral-subhedral	Fresh.	Clinopyroxene	20	25	<0.02		Subhedral	Replaced by actinolite.	Olivine	0	5	<0.02		?	Replaced by mixed-layer clays.	Magnetite	10	10	<0.02		?										Porespac	3		Uniform	Clay, chlorite	Irregular		        							        								Clays	8.5	Ol	Mixed-layer chlorite-smectite replacing olivine and filling pores.	Chlorite	10	Ol, plag	Also in small, ~ 30 micrometer veinlets.	Actinolite	0.5	Ol, cpx		Sphene	0.1	Vein	Trace in small chlorite veinlet.	Plagioclase	0.5	Plag		Pyrite	0.4	Ol, groundmass		Magnetite	0.5	Ol		Talc	0.5	Ol		Rock is highly phyric in contrast to barrel sheet desrciption as moderately phyric. Traces of disseminated pyrite and chalcopyrite.	no	1.22685	-83.73030	1359.30	135932	
111	504	B	143	Rotary	01	105	107	017		0155		DIV	Highly olivine clinopyroxene plagioclase phyric basalt	Subophitic	Unit 155	Fine		Olivine	<0.1	4   	0.5-2.0   		Euhedral-subhedral	Altered to 1) mixed layer clays + chlorite + talc + Fe Oxide + pyrite. 2) Chlorite + mixed layer clays + pyrite + Fe oxides.	Plagioclase	14  	16   	0.5-3.0   		Euhedral-subhedral	Sericite + chlorite in fractures. Glomerocrysts.	Clinopyroxene	10  	10 	0.5-2.0   		Anhedral-subhedral	Randomly chloritized (actinolite?).		    	    	          					    	    	          					Plagioclase	25	40	<0.2		Euhedral	Altered to sericite + chlorite.	Clinopyroxene	10	15	<0.2		Anhedral-subhedral	Altered to chlorite.	Olivine	0	10	<0.2		Subhedral-anhedral	Altered to sericite + chlorite.	Magnetite	5	5	<0.2		?										Vesicles	0						        							        								Clays	12	Ol, magnetite		Chlorite	18	Ol, plag, matrix		Actinolite	Tr			Fe oxides	5	Ol, matrix	Magnetite.	Pyrite	0.5	Ol		Talc	0.5	Ol										Prismatic plag phenocrysts have glass inclusions (up to 15 microns), often concentrated in center of crystals. Also fluid inclusions </= 15 microns. Some plag phenocrysts are zoned. groundmass plag crystals are lath-like. Pyrite is intergrown with chalcopyrite. Individual crystals of chalcopyrite are also present. Pyrite is also intergrown with or replacing magnetite.	no	1.22685	-83.73030	1359.30	136035	
111	504	B	144	Rotary	01	004	006	001		0156		DIV	Highly plagioclase clinopyroxene olivine phyric basalt	Subophitic	Unit 156	Fine		Olivine	0   	1   	0.5-1.0   		Subhedral	Altered to talc +/- chlorite +/- pyrite +/- actinolite(?).	Plagioclase	7   	7.5  	0.5-2.0   		Euhedral-subhedral	Altered along fractures to chlorite +/- clays.	Clinopyroxene	4   	4  	0.5-2.0   		Subbhedral-euhedral	Actinolite(?) forming in fractures(?).		    	    	          					    	    	          					Plagioclase	25	27	<0.5		Subhedral-euhedral	Slightly altered to chlorite along fractures.	Clinopyroxene	29	30	<0.5		Anhedral	Slightly altered to chlorite along fractures.	Olivine	0	24.5	<0.5		Anhedral	Altered to chlorite +/- mixed layer clays +/- Fe oxides.	Magnetite	6	6	<0.2		Subhedral-anhedral										Vesicles	0						        							        								Clays	8.5	Ol	Also possibly replacing plag.	Chlorite	18	Ol	Also replacing some plag and cpx.	Talc	0.5	Ol		Magnetite	2	Ol																		Plag has abundant glass and some fluid inclusions. Some plag crystals are strongly zoned. This thin section shows fractures (< 0.1 mm) filled with chlorite. Pyrite ( + chalcopyrite) replaces magnetite. Pyrite has a trace amount of chalcopyrite inclusions ( + sphene?). Chalcopyrite is also disseminated in the matrix.	no	1.22685	-83.73030	1368.70	136873	
111	504	B	144	Rotary	01	089	091	013		0158		DIV	Highly plagioclase clinopyroxene olivine phyric basalt	intergranular	Unit 158	Fine		Olivine	0   	1   	0.3-0.6   		Subhedral	Replaced by chlorite and mixed-layer clays.	Plagioclase	15  	15   	0.6-2.0   		Euhedral	Single crystals and glomercrysts. Zoned. Partially replaced by chlorite.	Clinopyroxene	2   	2  	0.3-1.5   		Subhedral			    	    	          					    	    	          					Plagioclase	34.3	34.3	<0.3		Subhedral		Clinopyroxene	33	33	<0.3		Subhedral	Partially replaced by actinolite.	Magnetite	10	10	<0.3		Euhedral	Slightly replaced by sphene.																Vugs    	2	<0.1	Even	Chlorite	Irregular		        							        								Zeolites	0.1	Plag	Replaces plag. Also occurs in 0.05 mm veinlets.	Chlorite	5	Ol, plag, vugs		Actinolite	0.5	Cpx		Sphene	0.1	Magnetite																			no	1.22685	-83.73030	1368.70	136958	
111	504	B	144	Rotary	01	110	112	016		0159		DIV	Sparsely plagioclase phyric basalt	Subophitic, microcrystalline	Unit 159	Very fine to aphanitic		Plagioclase	<1  	<1  	0.1-0.5   		Euhedral-subhedral	Fresh. Isolated crystals and glomercrysts.		    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	30	30	100-200u		Tabular	Laths up to 225 microns. Percent varies from place to place.	Clinopyroxene	60	60	<100u		Anhedral-subhedral	Percentage varies from place to place.	Titanomagnetite	<10	~10	<75u		Skeletal,anhedral-	Morphology continued: subhedral.	Olivine	Tr	?	?		?										Vesicles	0						        							        								Clays	Tr	Mesostasis	Mixed-layer clays. In interstices between microlites.	Sphene	Tr	Ti magnetite		Maghemite	Tr	Magnetite	After titanomagnetite in some areas. Darker than magnetite in reflected light.	Pyrite	Tr	Ol	Anhedral to subhedral. In interstices, as probable replacement products after ol.	Chalcopyrite	Tr	Ol	Between the microlites.													Groundmass is relatively unaltered. Alteration is < 1% of the whole rock. Maghemite(?) constitutes approximately 2/3 of the alteration minerals.	no	1.22685	-83.73030	1368.70	136979	
111	504	B	145	Rotary	01	039	042	006		0160		DIV	Highly plagioclase clinopyroxene olivine phyric basalt	Subophitic, glomerophyric	Unit 160	Medium		Olivine	0   	3   	1.0-4.0   		Subhedral-anhedral	Altered to chlorite +/- mixed-layer clays =/- talc +/- actinolite +/- magnetite +/- Fe hydroxides.	Plagioclase	10  	10   	1.0-3.0   		Euhedral	Chlorite (< 1%), albite(?) in fractures.	Clinopyroxene	3   	5  	0.5-1.5   		Subhedral	Partially altered to actinolite.	Spinel	<1  	<1  	0.5       		Euhedral	Chromite(?).		    	    	          					Plagioclase	40	42	<0.5		Subhedral, euhedral	Altered to chlorite.	Clinopyroxene	15	17	<0.5		Subhedral	Altered to actinolite.	Olivine	0	13	<0.5		Anhedral	Altered to chlorite =/- mixed-layer clays +/- talc +/- actinolite.	Magnetite	10	10	<0.5		Anhedral	Altered to maghemite, sphene.									Vesicles	0						        							        								Clays	5	Ol		Chlorite	15	Plag, ol		Albite	<1	Plag		Actinolite	1	Cpx		Sphene	<1	Magnetite		Quartz	<1	Veins		Talc	1			Magnetite	<1	Ol		Two types of veins: A) </= 1 mm,filled by chlorite +/- talc(?) +/- mixed-layer clays; B) ~ 2 mm, lined by chlorite, filled by quartz +/- sulfides. Quartz replaced by chlorite (?). Abundant sulfides (chalcopyrite) adjacent to vein, minor pyrite.	no	1.22685	-83.73030	1378.30	137869	
111	504	B	145	Rotary	01	096	098	013	A	0160		DIV	Highly plagioclase clinopyroxene olivine phyric basalt	Subophitic	Unit 160	Fine		Olivine	0   	1   	0.3-1.0   		Euhedral-subhedral	Replaced by mixed-layer clays, talc, chlorite, actinolite.	Plagioclase	14  	15   	0.3-2.0   		Euhedral	Generally fresh. Partially replaced by chlorite(?).	Clinopyroxene	4   	5  	0.3-3.0   		Subhedral	Rare actinolite in fractures. Also chlorite(?).		    	    	          					    	    	          					Plagioclase	48	49	<0.2		Euhedral	Replaced by chlorite.	Clinopyroxene	16	20	<0.2		Subhedral	Replaced by actinolite, chlorite(?).	Olivine	0	5	<0.2		Anhedral	Replaced by talc, chlorite, mixed-layer clays.	Magnetite	5	5	<0.2		?										Vesicles	0						        							        								Clays	6	Ol	Mixed-layer clays	Chlorite	4	Ol, plag		Actinolite	Tr	Cpx, ol	Replaces cpx and olivine along fractures.	Talc	2	Ol		Magnetite	1	Ol		Pyrite	Tr		Disseminated in the matrix.									Plag has abundant glass inclusions; some show zoning. Thin section contains traces of chalcopyrite (individual grains and intergrowths with pyrite) and some sphalerite (intergrown with pyrite and chalcopyrite).	no	1.22685	-83.73030	1378.30	137926	
111	504	B	145	Rotary	02	123	125	010	B	0160		DIV	Highly clinopyroxene plagioclase olivine phyric basalt	Ophitic to subophitic	Unit 160	Fine		Olivine	0   	3   	0.3-2.5   		Euhedral	Replaced by chlorite, actinolite, mixed layer clays, magnetite, pyrite.	Plagioclase	4   	5    	0.2-2.0   		Euhedral-subhedral	Partially replaced by albite, chlorite. Single crystals; glomerocrysts +/- cpx.	Clinopyroxene	6   	7  	0.5-5.0   		Subhedral	Single crystals; glomerocrysts with plag. Partially replaced by actinolite + magnetite.		    	    	          					    	    	          					Plagioclase	35	40	0.05-0.20		Euhedral-subhedral	Partially replaced by chlorite, albite.	Clinopyroxene	33	40	0.05-0.30		Subhedral	Partially replaced by actinolite, magnetite.	Magnetite	2	4	0.01-0.05		Euhedral	Partially replaced by sphene.																Miaroles	1	0.05-0.50	Even	Chlorite, actinolite, sphene	Irregular	One area with large (5 mm) irregular vug-filled chlorite + actinolite. Surrounding rock is extensively recrystallized ( up  to 100%).	        							        								Clays	5	Ol		Chlorite	10	Vugs, ol, plag		Albite	2	Plag		Actinolite	3	Cpx, ol, vugs																		Minor sulfides present. Secondary magnetite replaces olivine in vugs.	no	1.22685	-83.73030	1379.80	138103	
111	504	B	145	Rotary	03	044	046	004	A	0160		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt	Ophitic to subophitic	Unit 160	Fine		Olivine	0   	2   	0.5-3.0   		?	Replaced by mixed-layer clays, talc, magnetite, pyrite.	Plagioclase	4   	5    	1.0-2.0   		Subhedral	Single crystals and glomerocrysts with cpx.	Clinopyroxene	3   	3  	0.6-2.0   		Subhedral	Partially replaced by actinolite and magnetite.		    	    	          					    	    	          					Plagioiclase	31	31	<0.3		?		Clinopyroxene	30.9	31	<0.3		?		Magnetite	12	12	<0.3		?	Partially replaced by sphene.																Vesicles	3	0.05-3.00	Patchy	Chlorite, actinolite	Irregular	Host rock is extensively altered for ~ 0.1-0.3 mm around vesicles.	        							        								Clays	3	Olivine		Chlorite	8	Plag, vugs		Albite	0.1			Sphene	Tr	Magnetite		Magnetite	Tr	Olivine, cpx		Actinolite	8	Cpx, vugs											no	1.22685	-83.73030	1381.30	138174	
111	504	B	146	Rotary	01	021	023	004		0162		DIV	Sparsely olivine plagioclase clinopyroxene phyric basalt	Subophitic	Unit 162	Fine		Olivine	0   	3   	0.3-1.0   		Euhedral	Replaced by chlorite + magnetite + pyrite.	Plagioclase	1   	1    	0.6-2.0   		Euhedral	Glomerocrysts. Partially replaced by albite.	Clinopyroxene	1   	1  	1.0-3.0   		Subhedral	Fresh.		    	    	          					    	    	          					Plagioclase	39	39	<0.6		Subhedral	Partially replaced by albite, zeolites.	Clinopyroxene	39	39	<0.6		Subhedral	Partially replaced by actinolite.	Magnetite	10	10	<0.2		Euhedral	Extensively replaced by sphene.																Vugs    	1	0.3-3.0	Even		Irregular	Zoned filling in large vug: 1) chlorite + actinolite; 2) zeolites + prehnite.	        							        								Zeolites	1	Plag, vugs		Chlorite	5	ol, plag, vugs		Albite	1	Plag		Actinolite	3	Cpx, vugs		Sphene	1	Magnetite		Pyrite	Tr	Ol	Disseminated in the matrix.	Magnetite	Tr	Ol						Plag phenocrysts have glass inclusions. Hourglass and concentric zoning in cpx phenocrysts. the rock is moderately altered (10-20%).	no	1.22685	-83.73030	1388.00	138821	
111	504	B	147	Rotary	01	039	041	006	B	0163		DIV	Aphyric basalt	Intergranular to subophitic	Unit 163	Medium			    	    	          					    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	50	50	0.15-2.00	An 54	Euhedral,bladed	Smaller crystals generally bladed. Some patches of larger crystals accumulated. Seriate texture.	Clinopyroxene	35	42	0.15-1.0	Diopside/augite	Euhedral-anhedral	Generally partially encloses plag. Some basal twins.	Olivine	0	6	0.1-0.5		Euhedral-subhedral	Replaced in coronal fashion by chlorite, some clay, oxides, pyrite.	Titanomagnetite	2	2	0.15		Euhedral	Replaced by maghemite + sphene?									Vesicles	0						        							        								Clays	7	Olivine, cpx	Mixed-layer smectite/chlorite replacing olivine. Clays partially replace cpx.	Chlorite	3	Cpx, olivine	Minor cpx replacement. Chlorite + smectite replace ol.	Sphene	<<1	Ti-mag	Replaces titanomagnetite to a very small degree.	Fe oxides	1.5	Olivine		Talc	<1	Olivine	Possibly as olivine replacement, especially in cores.	Pyrite	0.5	Mesostasis(??)	Occurs as minor matrix alteration phase.									Texture suggests that the rock is still a diabase even though it is quite coarse. No distinct phenocrysts although some groundmass crystals are as large as 2 mm. the fact that these larger crystals include smaller crystals suggests that the larger crystals were not entirely intratelluric. The rock clearly grew with a seriate texture. An open fracture (0.15 mm wide) is present, constituting less than 1% of the thin section.	no	1.22685	-83.73030	1397.40	139779	
111	504	B	147	Rotary	02	044	046	001	F	0163		DIV	Aphyric basalt	intergranular to subophitic (diabasic)	Unit 163	Medium			    	    	          					    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	39	40	0.3-1.5	An 60(?)	Euhedral, bladed	Sometimes form radiating patterns and glomerocrysts.	Clinopyroxene	50	55	0.2-1.0	Diopside(?)	Anhedral	Largest crystals are anhedral matrix grains.	Olivine	0	4	0.5		Subhedral	Replaced by talc + chlorite/mixed-layer clays(?) + pyrite.	Magnetite	1	1	0.2		Euhedral	Partially replaced by sphene.									Vugs    	<<1	0.6		Chlorite, pyrite	Irregular	Very minor.	        							        								Clays	5	Ol, plag	With chlorite. Replaces olivine and minor amounts of plag.	Chlorite	4	Ol	With clays (smectite). Mixed-layer clay.	Sphene	<1	Magnetite		Pyrite	<1	Ol, matrix	Replaces matrix grains up to 0.4 mm.	Talc	<1	Ol	Partial replacement of olivine.	Oxides	<1	Ol	Minor replacement of olivine.									Large cpx crystals totally enclose plag crystals. Some cpx crystals show undulose extinction possibly due to strain caused by crystallization pressure(?). Some large plagioclase crystals have rare altered glass inclusions. Tentative crystallization order: plag-ol-cpx. Generally, alteration zone common around altered ol crystals.	no	1.22685	-83.73030	1398.54	139898	
111	504	B	147	Rotary	02	108	112	001	N	0163		DIV	Sparsely clinopyroxene plagioclase olivine phyric basalt	Intergranular to subophitic	Dyke center. Unit 163	Aphanitic to medium		Olivine	0   	<1  	~0.5      		Euhedral	Replaced by talc/chlorite + minor actinolite.	Plagioclase	1   	2    	1         		Subhedral	Fractured. Single crystals and glomerocrysts. Altered to clays, especially along cleavage traces.	Clinopyroxene	2   	2  	1         		Subhedral	Contain euhedral plag inclusions. Partially altered to chlorite and acicular actinolite. Sometimes twinned.		    	    	          					    	    	          					Plagioclase	</=25	30	0.05-0.50		Prismatic, bladed	Often partially or completely enclosed in cpx. Rare palmate texture. Variably altered up to 25%.	Clinopyroxene	30	32	0.05-0.70		Subhedral	Vary from small groundmass crystals oikocrystal 0.7-1 mm(?). Replaced on margins by actinolite +/- chlorite.	Olivine	0	3	<0.3		Subhedral	Replaced by chlorite + actinolite +/- clays.	Magnetite	53	3	0.1		Subhedral	Partially replaced by sphene.	Apatite(?)	<1	<1	0.05		Euhderal	Occur as minor inclusions in plag.		Vugs    	3	1	Even	Chlorite, actinolite, oxides	Irregular	                               Occur in small areas of finer grained groundmass. Could be interpreted as crystallization controlled by volatiles. Therefore, not true vugs, but clearly p referential alteration of groundmass(???) to (see main comments)	        							        								Clays	12	Ol(?), plag, groundmass	Patchy distribution in groundmass due to alteration of plag, olivine(?).	Chlorite	10	Ol, matrix	Replaces olivine phenocrysts and matrix. Also in vugs.	Actinolite	10	Ol	Chlorite replacing olivine and cpx. Patchy distribution.	Sphene	52	Ti-magnetite	Replaces some titanomagnetite.	Magnetite	2	Ol, groundmass	Some groundmass sphene appears secondary. Also occurs in olivine.	Pyrite	1	Ol	Replaces olivine. Also occurs in vuggy patches.									GROUNDMASS CONTINUED:  Zircon  < 1   < 1  0.05   Subhedral   Occurs as minor inclusions in plag.  VUG COMMENTS CONTINUED: Chlorite + actinolite + oxide.    MAIN COMMENTS:  Not well defined euhedral phenocrysts except for ol (now pseudomorphs after ol). Plag shows palmate growth in places. Larger (phenocrysts?) of cpx are poikilitic and enclose stubbier crystals of plag. Larger plag crystals are generally quite altered to clays(?), up to 30%. Actinolite/chlorite partially replaces ol + cpx. Patchy distribution in groundmass may be vug-filling phases; groundmass texture is often finer grained in these areas.	no	1.22685	-83.73030	1398.54	139962	
111	504	B	147	Rotary	02	108	111	001	N	0163		DIV	Sparsely olivine phyric basalt	Intersertal to subophitic	Unit 163	Fine to aphanitic		Olivine	0   	<1  	<1        		Subhedral-euhedral	Completely altered to talc +/- mixed-layer clays + chlorite + actinolite.		    	     	          					    	   	          					    	    	          					    	    	          					Clinopyroxene	44	45	?		Anhedral-subhedral	Fresh or altered to actinolite in the halos.	Plagioclase	40	40	?		Tabular	Fresh or slightly altered to chlorite in fissures.	Titanomagnetite	<10	<10	?		Euhedral-subhedral																	Vugs    	5	<2	Halos	Chlorite	Irregular		        							        								Clays	2	Olivine, matrix	Brownish.	Prehnite	Tr	Veins, vugs		Chlorite	3	Olivine, matrix	Green pleochroic. Sometimes as spherulites.	Albite	Tr	Plag	Some plag recrystallized to albite.	Actinolite	Tr	Cpx, vugs	Prismatic crystals (with good cleavage traces visible) and needles replacing cpx. Also in mesostasis and vugs.	Sphene	Tr	Ti-magnetite	In the groundmass, particularly in the halos.	Sulfides	Tr	Olivine, matrix	Mainly pyrite with traces of chalcopyrite in the interstices.	Maghemite(?)	Tr	Magnetite	Darker than magnetite in reflected light (sphene? or leucoxene?).	Actual interval is from 108-112 cm, however the succeeding thin section had the same ID.  Some vugs filled with a colorless mineral. Patchy aggregates of a mosaic-like aluminosillicate (zeolite?) with first order gray to white interference colors, possibly laumontite, associated with disseminated actinolite needles. Alteration minerals occur in the following proportions: 50% chlorite, clays 30%, 10% actinolite, 7% sulfides, and trace amounts of the remaining minerals.	no	1.22685	-83.73030	1398.54	139962	
111	504	B	148	Rotary	01	018	021	003		0164		DIV	Sparsely plagioclase olivine phyric basalt	Ophitic	Unit 164	Fine		Olivine	0   	2   	0.4-3.0   		Euhedral	Replaced by mixed-layer clays + talc + magnetite + pyrite.	Plagioclase	7   	7    	0.1-3.0   		Euhedral	Single crystals and glomerocrysts. Partially replaced by clays and albite.		    	   	          					    	    	          					    	    	          					Plagioclase	36.9	36.9	<0.3		Subhedral	Partially replaced by clays.	Clinopyroxene	37	37	<0.3		Subhedral	Slightly replaced by actinolite.	Olivine	0	10	<0.3		Subhedral	Replaced by mixed-layer clays.	Magnetite	7	7	<0.3		Euhedral	Slightly replaced by sphene.	Spinel	<0.1	<0.1	0.15		Subhedral	single crystal in ol pseudomorph.		Vesicles	0						        							        								Clays	12	Ol		Albite	Tr	Plag		Actinolite	Tr	Cpx		Sphene	Tr	Magnetite		Pyrite	0.1	Ol														Ol pseudomorphs are sometimes zoned: mixed-layer clays in the center, rimmed by talc.	no	1.22685	-83.73030	1406.80	140698	
111	504	B	148	Rotary	01	061	063	009		0164		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt	Subophitic	Unit 164	Fine		Olivine	0   	1   	0.4-0.6   		Subhedral	Replaced by mixed-layer clays + talc + magnetite + pyrite.	Plagioclase	1   	1    	0.6-1.0   		Subhedral	Glomerocrysts. Partially replaced by clays, albite.	Clinopyroxene	1   	1  	0.9-3.0   		Subhedral			    	    	          					    	    	          					Plagioclase	41	41	<0.6		?	Partially replaced by clays, albite.	Clinopyroxene	41	41	<0.6		?	Partially replaced by actinolite.	Olivine	0	1	<0.4		?	Replaced by mixed-layer clay, talc, magnetite.	Magnetite	7	7	<0.6		?										Vugs    	<1	<0.3		Clays	Irregular		        							        								Clays	8	Ol, plag, vugs		Albite	Tr	Plag		Actinolite	1	Cpx		Sphene	Tr	Magnetite																			no	1.22685	-83.73030	1406.80	140741	
111	504	B	148	Rotary	01	071	073	010		0164		DIV	Aphyric basalt	Subophitic, glomerophyric	Unit 164	Medium		Clinopyroxene	<1  	<1  	1.5       		Subhedral	Partially altered to actinolite.		    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	40	50	<1.0		Subhedral-anhedral	Altered to actinolite +/- chlorite (+/- albite). Crystals are zoned. Glomerocrysts abundant.	Clinopyroxene	25	35	<1.0		Subhedral	Altered to actinolite.	Olivine	0	10	<1.0		Anhedral-subhedral	Altered to actinolite +/- chlorite +/- pyrite.	Magnetite	5	5	<1.0		Euhedral	Partially altered to maghemite + sphene(?).									Vesicles	0						        							        								Chlorite	10	Plag, ol		Actinolite	20	Cpx, plag, ol																											no	1.22685	-83.73030	1406.80	140751	
111	504	B	149	Rotary	01	082	084	013	B	0164		DIV	Highly plagioclase olivine clinopyroxene phyric basalt	Intergranular to subophitic	Unit 164	Medium		Olivine	0   	5   	0.5-1.0   		Anhedral-subhedral	Altered to chlorite +/- actinolite +/- pyrite.	Plagioclase	8   	10   	0.5-1.0   		Subhedral-euhedral	Altered to chlorite +/- actinolite.	Clinopyroxene	2   	3  	1.0-3.0   		Subhedral	Altered randomly to actinolite. Glomerocrysts abundant.		    	    	          					    	    	          					Plagioclase	30	35	<0.5		Euhedral-subhedral	Altered to ab +/- chlorite +/- actinolite.	Clinopyroxene	20	25	<0.5		Subhedral	Altered to actinolite +/- chlorite.	Olivine	0	12	<0.5		Anhedral	Altered to chlorite +/- actinolite.	Magnetite	10	10	<0.5		Euhedral										Vesicles	0						        							        								Chlorite	12	Ol, plag, +/- cpx		Actinolite	18	Ol, plag, cpx		Pyrite	<1	Ol	Chalcopyrite traces in pyrite.																						no	1.22685	-83.73030	1416.90	141772	
111	504	B	149	Rotary	02	057	059	007		0164		DIV	Sparsely plagioclase olivine clinopyroxene phyric basalt	Spherulitic, intergranular	Unit 164	Fine		Olivine	0   	3   	0.15-0.50 		Euhedral	Replaced by chlorite + mixed-layer clay.	Plagioclase	4   	5    	0.30-1.20 		Euhedral	Extensively replaced by albite, zeolites, clays. Single crystals and glomerocrysts.	Clinopyroxene	0.1 	0.1	0.6       		Subhedral	One fresh crystal.		    	    	          					    	    	          					Plagioclase	31.9	32.9	<0.2		Euhedral	Microlites.	Clinopyroxene	33	33	<0.2		Subhedral	Spherulites. Cloudy (partially altered to actinolite?).	Magnetite	10	0	<0.2		Euhedral, skeletal																	Vug     	1	10		See comments		Filled sequentially: 1) chlorite + fibrous actinolite + euhedral, 150 micron sphene; 2) zeolites, probably laumontite.	        							        								Clays	5	Olivine, plag		Zeolites	3	Plag		Albite	5	Plag		Actinolite	5	Cpx, veinlets		Sphene	2			Chlorite	Tr	Veinlets										Sample intruded by glassy plag-olivine-cpx basalt. Galss + olivine totally altered to clays + chlorite + sphene. Plag replaced by albite. Host dike is extensively altered adjacent to the intrusive dike and vug.	no	1.22685	-83.73030	1418.35	141891	
111	504	B	150	Rotary	01	054	056	012		0166		DIV	Highly plagioclase clinopyroxene olivine phyric basalt	Microlitic, felted	Unit 166	Aphanitic to fine		Olivine	0   	2   	0.3-1.5   		Euhedral	Pseudomorphs. Replace  in zones by actinolite, chlorite, monor smectite, oxide, pyrite. Oxides along cleavage  traces.	Plagioclase	7.5 	8    	0.1-3.0   	An 55	Euhedral	Single crystals and glomerocrysts with olivine or cpx. Partially altered to clays.	Clinopyroxene	2   	2  	~0.3      		Euhedral	Glomerocrysts with pl;ag and single crystals. Often twinned.		    	    	          					    	    	          					Plagioclase	35	40	?		?	Minor alteration to clays, chlorite.	Clinopyroxene	38	>40	?		?	Minor alteration to chlorite, actinolite.	Olivine	0	2(?)	?		?	Altered to actinolite +/- chlorite(?).	Oxide	8	8	?		?	Some monor alteration to sphene.									Vesicles	0						        							        								Clays	2.5	Plag	Minor replacement of plag.	Chlorite	3	Cpx, ol	minor amounts in plag	Actinolite	3	Ol	Minor replacement of groundmass cpx. Pseudomorphs after olivine.	Pyrite	<1	Ol	Very minbor alteration of ol.																	Groundmass is fine grained (microlitic texture), and essentially looks like porphyritic volcanic basalt. This could be due to sample proximity to chilled margin of dike. the amount of matrix alteration is difficult to estimate, probably ~ 5%.	no	1.22685	-83.73030	1426.40	142694	
111	504	B	150	Rotary	01	113	115	022	A	0167		DIV	Sparsely plagioclase olivine phyric basalt	Subophitic	Unit 167	Fine to medium		Olivine	0   	<2  	?         		?	Altered to mixed-layer clays + talc + pyrite+ actinolite.	Plagioclase	<2  	3    	2         		Tabular	Patchy extinction.		    	   	          					    	    	          					    	    	          					Plagioclase	35	35	</=1		Tabular	Fresh. Euhedral tabular to acicular.	Clinopyroxene	50	50	</=1		Anhedral		Opaques	<5	5	0.2	Ti-mag	Skeletal	Maghemite(?) also present.																Vesicles	0						        							        								Clays	1.0	Ol, matrix	Expandable chlorite/clay mixture. Alteration of ol, and in mesostasis.	Chlorite	6.0	Ol, veinlets	Also in interstices. Forms along cracks in plag. Chlorite + expandable clays from after olivine.	Actinolite	0.5	Ol, matrix	Also in interstices.	Opaques	0.5	Ol	Pyrite replaces ol and fills interstices. One crystal of chalcopyrite.	Sphene	Tr	Magnetite	In matrix and in chlorite veins.													Open fracture (horizontal strike) with no surrounding alteration halo.	no	1.22685	-83.73030	1426.40	142753	
111	504	B	151	Rotary	01	004	007	001	B	0168		DIV	Aphyric basalt	Subophitic, glomerophyric	Unit 168	Medium		Olivine	0   	<1  	1.0-1.5   		Subhedral	Altered to 1) mixed-layer clays +/- chlorite +/- actinolite +/- pyrite +/- magnetite; 2) Actinolite +/- chlorite +/- pyrite +/- magnetite. Alteration is zonal in places: cores altered predominantly to actinolite; margins altered to(see main comments)	Clinopyroxene	<1  	< 1  	1.0-2.5   		Subhedral-euhedral	Partially altered to actinolite.		    	   	          					    	    	          					    	    	          					Plagioclase	40	50	<1.0		Euhedral-subhderal	Altered to chlorite + actinolite.	Clinopyroxene	25	35	<1.0		Subhedral	Altered to actinolite.	Olivine	0	10	<1.0		Subhedral	Altered to actinolite + chlorite +/- mixed-layer clays.	Magnetite	5	5	<1.0		Anhedral	Partially altered to maghemite = sphene(?).									Vesicles	0						        							        								Chlorite	10	Plag, ol		Actinolite	20	Cpx, plag, ol																										Continuation of olivine phenocryst comments: chlorite + mixed-layer clays +/- actinolite.	no	1.22685	-83.73030	1430.80	143084	
111	504	B	152	Rotary	01	005	008	002		0170		DIV	Moderatley plagioclase clinopyroxene olivine phyric basalt	Subophitic, recrystallized	Unit 170	Fine to medium		Olivine	0   	1   	0.3-2.0   		Subhedral	Altered to chlorite + talc + actinolite + magnetite + pyrite.	Plagioclase	3   	7    	~1        		Subhedral	Recrystallized. Highly fractured.	Clinopyroxene	1   	2  	~0.5      		Subhedral	Partially altered to actinolite + chlorite.		    	    	          					    	    	          					Plagioclase	10(?)	45	?		?	Recrystallized.	Clinopyroxene	5(?)	35	?		?	Altered predominantly to chlorite and some actinolite.	Olivine	0	8	?		?	Altered to chlorite + actinolite +/- talc.	Magnetite	1	2	?		?	Altered to maghemite + sphene.									Vesicles	0						        							        								Clays	6	Olivine	Replaces ol phenocrysts and groungmass crystals. Also replaces cpx. Includes smectite.	Chlorite	~21	Plag (?)		Actinolite	20	Cpx		Sphene	1	Magnetite	Partially replaces magnetite and groundmass.	Plagioclase	30	Plag	Recrystallized primary plag. Could be partially albitized.	Maghemite	1	Magnetite		Pyrite	<1	Ol	Replacement of groundmass ol?	Talc	<1	Ol	Partial replacement of ol.	Rock is heavily altered. Considerable amount of chloritzation occurs in patches. Replacement by actinolite is extensive, especially in the cores of large cpx crystals and in the centers of chlorite patches. Plag crystals are highly fractured and recrystallized.	no	1.22685	-83.73030	1435.90	143595	
111	504	B	152	Rotary	01	005	008	002		0169		DIV	Sparsely olivine plagioclase phyric basalt	Microlitic, cryptocrystalline	Unit 169, chilled margin	Very fine to fine		Olivine	0   	<1  	1         		Subhedral	Only one glomerocryst. Altered to talc + magnetite + chlorite + smectite.	Plagioclase	<1  	< 1  	<1        		Euhedral	Single crystals and glomerocrysts.		    	   	          					    	    	          					    	    	          					Matrix	0	99	?		?	Cryptocrystalline. Glass altered to chlorite + smectite + mixed-layer clays(?) + oxides.																														Vesicles	0						        							        								Clays		Ol, matrix	Percentages of secondary minerals were not estimated since replacement was of cryptocrystalline/glassy matrix.	Chlorite		Ol, matrix		Talc		Ol		Magnetite(?)		Ol, matrix		Actinolite	<1	Vein	0.5 mm-wide vein. Actinolite at outer margins, laumontite in center.													Small inclusions of adjacent dike matrix found in glassy margin of Unit 169.	no	1.22685	-83.73030	1435.90	143595	
111	504	B	152	Rotary	01	081	084	012		0173		DIV	Sparsley plagioclase clinopyroxene olivine phyric basalt	Subophitic, glomerophyric	Crystalline part ofUnit 173	Fine to medium		Olivine	0   	1   	</=1.5    		Subhedral	Altered to chlorite +/- actinolite.	Plagioclase	1   	2    	</=2.0    		Euhedral-subhedral	Altered to chlorite.	Clinopyroxene	1   	1  	</=1.5    		Subhedral			    	    	          					    	    	          					Plagioclase	30	45	<0.2		Subhedral-euhedral	Altered to chlorite.	Clinopyroxene	20	30	<0.2		Subhedral	Altered to chlorite +/- actinolite.	Olivine	0	10	<0.2		Subhedral	Altered to chlorite +/- actinolite +/- mixe -layer clays.	Magnetite	11	11	<0.2		Subhedral	Partially altered to sphene.									Vesicles	0						        							        								Clays	10	Ol, plag		Chlorite	15	Ol, plag, cpx		Actinolite	6	Ol, cpx		Sphene	<1	Magnetite		Magnetite	5	Ol															no	1.22685	-83.73030	1435.90	143671	
111	504	B	152	Rotary	01	081	084	012		0174		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt	Subophitic, single crystals	Unit 174, chilled margin	Glassy to cryptocrystalline		Olivine	0   	<1  	</=2.0    		Subhedral	Altered to actinolite +/- chlorite.	Plagioclase	4   	5    	</=2.0    		Subhedral	Altered to chlorite. Glomerocrysts with cpx.	Clinopyroxene	2   	2  	</=2.0    		Subhedral	Randomly altered to chlorite(?). Glomerocrysts with plag.		    	    	          					    	    	          					Plagioclase	30	30	<0.2		Subhedral	Partially (< 1%) altered to chlorite.	Olivine	0	10	<0.2		Euhedral-subhedral	Altered to chlorite +/- actinolite +/- magnetite.	Matrix	51	53	?		?	Recrystallized. Altered to chlorite +/- Fe hydroxide.																Vesicles	0						        							        								Chlorite	10	Ol, plag, veins		Actinolite	3	Ol		Magnetite	<1	Ol																						Glass rim is < 0.3 mm - cryptocrystalline.	no	1.22685	-83.73030	1435.90	143671	
111	504	B	152	Rotary	01	123	126	020		0175		DIV	Highly plagioclase clinopyroxene olivine phyric basalt	Intergranular, spherulitic	Unit 175	Fine		Olivine	0   	2   	0.3-1.2   		Euhedral	Altered to mixed-layer clays + pyrite.	Plagioclase	15  	15   	0.2-2.0   		Euhedral	Single crystals and glomerocrysts. Slightly altered to clays along fractures. Some crystals are zoned.	Clinopyroxene	5   	5  	0.2-2.0   		Subhedral, tabular	Single crystals and glomerocrysts with plag.		    	    	          					    	    	          					Plagioclase	30	30	<0.2		Skeletal, bow-tie		Clinopyroxene	30	30	<0.2		Skeletal	Also plumose and spherulitic crystals.	Olivine	0	5	<0.2		Rounded	Altered to mixed-layer clays.	Magnetite	10	10	0.003-0.015		Euhedral, skeletal										Vugs    	3	<0.15	Dispersed	Clays	Irregular		        							        								Clays	10	Ol, vugs		Pyrite	Tr	Ol																											no	1.22685	-83.73030	1435.90	143713	
111	504	B	153	Rotary	01	093	095	014		0176		DIV	Sparsely olivine clinopyroxene phyric basalt	Ophitic	Unit 176	Fine		Olivine	0   	2   	1.0-2.5   		Euhedral	Altered to mixed-layer clays + magnetite + pyrite.	Clinopyroxene	0.5 	0.5  	3.0       		Subhedral	One single crystal.		    	   	          					    	    	          					    	    	          					Plagioclase	37.8	37.8	<0.1		Subhedarl	Partially altered to clays + albite.	Clinopyroxene	37.2	37.2	<0.6		Subhedral	Partially altered to actinolite.	Olivine	6	6	<0.5		Subhedral	Altered to mixed-layer clays + magnetite + pyrite.	Magnetite	8	8	0.03-1.50		Euhedral										Vesicles	0						        							        								Clays	10	Olivine, plag		Chlorite	0.1	Plag, ol	Minor replacement of plag and ol.	Albite	0.2	Plag	Minor replacement of plag.	Actinolite	0.1	Cpx	Minor replacement of cpx.	Sphene	0.1	Magnetite	Minor replacement of magnetite.														no	1.22685	-83.73030	1445.30	144623	
111	504	B	154	Rotary	01	064	066	004	B	0176		DIV	Aphyric basalt	Subophitic, glomerophyric	Unit 176	Medium		Olivine	0   	<1  	1.0-1.5   		Subhedral	Altered to actinolite +/- mixed-layer clays +/- chlorite +/- talc(?) +/- pyrite +/- magnetite. Zonal alteration pattern: core altered to actinolite +/- mixed-layer clays + pyrite; rim altered to actinolite + magnetite.	Plagioclase	<1  	< 1  	1.0-1.5   		Euhedral	Altered to actinolite + chlorite.	Clinopyroxene	<1  	<1 	1.0-1.5   		Subhedral	Partially altered to actinolite.		    	    	          					    	    	          					Plagioclase	40	50	<1.0		Euhedral-subhedral	Altered to actinolite + chlorite.	Clinopyroxene	25	35	<1.0		Subhedral-anhedral	Altered to actinolite.	Olivine	0	10	<1.0		Anhedral	Altered to actinolite +/- chlorite +/- mixed-layer clays +/- talc(?) +/- pyrite +/- magnetite.	Magnetite	5	5	<1.0		Euhedral	Partially altered to maghemite (sphene?).									Vesicles	0						        							        								Chlorite	10	Plag, ol		Actinolite	20	Cpx, plag, ol																										Disseminated pyrite.	no	1.22685	-83.73030	1454.30	145494	
111	504	B	155	Rotary	01	043	045	008		0176		DIV	Sparsely plagioclase clinopyroxene olivine phyric basalt	Subophitic (diabasic)	Unit 176	Fine to medium		Olivine	0   	<1  	1.5       		Euhedral	Zonally replaced: margins altered to talc; core altered to actinolite + pyrite.	Plagioclase	<1  	< 1  	1.5       		Subhedral	Expansion cracks.	Clinopyroxene	<1  	<1 	2         	Augite/diopside	Euhedral	Poikilitically enclose stubby plag.		    	    	          					    	    	          					Plagioclase	50	55	<0.1-1.0	An 52	Euhedral, bladed	Minor alteration to clays.	Clinopyroxene	37	43	0.15-0.50	Diopside/augite	Anhedral-subhedral	Subophitic with plag.	Olivine	0	5	0.15		Anhedral	Completely altered to chlorite +/- pyrite +/- magnetite.	Magnetite	3	5	<0.15		Anhedral	Partially altered to maghemite.									Vesicles	0						        							        								Clays	<1	Plag	Partial replacement of plag.	Chlorite	6	Ol, cpx	Replacement of groundmass ol, minor replacement of cpx.	Actinolite	<1	Ol	Replacement of ol phenocryst cores.	Pyrite	<1	Ol	Partial replacement of groundmass ol.	Maghemite	<2(?)	Magnetite	Replacement of magnetite?	Talc	<1	Ol	Replacement of ol phenocryst margins.									Open fracture, 1 mm wide, 0.5 mm from top of piece. Rock is fairly fresh with the exception of ol crystals. Ol is altered to talc +/- chlorite + actinolite +/- pyrite +/- magnetite. This alteration produces expansion which results in fractured plag, etc.	no	1.22685	-83.73030	1459.00	145943	
111	504	B	157	Rotary	01	002	005	001		0179		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt	Glomeroporphyritic, microlitic	Unit 179, near a contact with a (cont.)	Very fine		Olivine	0.5 	1   	1.0-3.0   		Subhedral	Fresh or altered to 1) talc + magnetite +/- pyrite; 2) chlorite + actinolite + pyrite.	Plagioclase	2   	2    	1.0-3.0   		Euhedral, tabular	Glomerocrysts. Recrystallized. Chlorite alteration along cracks.	Clinopyroxene	1   	1  	1.0-3.0   		Euhedral-subhedral	Fresh. Some elongated crystals. Some crystals altered to actinolite.		    	    	          					    	    	          					Plagioclase	21	21	0.2		Euhedral,tabular	Also acicular morphology present.	Clinopyroxene	52	62	<0.1		Quenched	Cryptocrystalline to small sheaves.	Titanomagnetite	7	13	<0.1		Skeletal,euhedral	Also subhedral morphology present. Altered to maghemite(?), sphene.																Vugs    	<1	<1	Interstitial	Chlorite	Irregular	Some vugs in an altered ol crystal (now talc + magnetite); filled with fibrous mineral (zeolite?).	        							        								Zeolites	<1	Vugs	Filling vugs in ol. Interstitial between plag and olivine crystals which form glomerocrysts.	Chlorite	5	Veins	Forms the core of actinolite veins. Also as discrete veins.	Albite	<1	Plag	Possibly after recrystallized plag.	Actinolite	3	Veins	Abundant needles in veins and in halos. Formed as needles, and bladed crystals. Also as crystal nuclei.	Sphene	<5	Ti-mag, veins	After titanomagnetite and in chlorite veins.	Plagioclase	<1	Plag	Possibly after recrystallized plag (instead of albite).	Opaques	2	Olivine, vein, groundmass	Scarce pyrite in groundmass and in altered ol. secondary magnetite in ol which is now altered to talc and is associated with actinolite and chlorite veins.					WHERE SAMPLED CONTINUED: coarser grained rock.  MAIN COMMENTS:  Veins are filled predominantly with actinolite and with chlorite. Plag appears recrystallized near actinolite veins. An actinolite vein is cross cut by a chlorite + sphene vein. Another larger vein shows that chlorite + sphene veins occur in a more internal position than actinolite. Actinolite is also common in alteration halos around veins as partial replacement of cpx crystals. groundmass is microcrystalline to microlitic.	no	1.22685	-83.73030	1473.10	147311	
111	504	B	157	Rotary	01	027	031	005		0181		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt	Glomeroporphyritic, microlitic	Unit 181, at the contact with(continued)	Very fine		Olivine	0   	1   	1.0-2.0   		Subhedral	Completely altered to chlorite + actinolite + opaques.	Plagioclase	<2  	2    	1.0-2.0   		Tabular	Partially recrystallized. Altered to chlorite + actinolite along  cracks.	Clinopyroxene	0.5 	1  	<1        		Subhedral	Partially altered to actinolite.		    	    	          					    	    	          					Plagioclase	30	30	<1		Tabular, acicular	Microlites.	Clinopyroxene	50	60	<0.5		Anhedral	Altered to actinolite(?).	Titanomagnetite	2	5	<0.2		Skeletal	Altered to maghemite(?) and sphene in the coarser grained portion.																Vesicles	0						        							        								Zeolites	Tr	Vein	Possibly laumontite.	Chlorite	4	Ol, veins		Albite	1	Plag, veinlets	Alteration of primary plag phenocrysts.	Actinolite	10	Ol, cpx, veins	The most abundant phase in veins and halos.	Sphene	Tr	Opaques	After oxides, both primary and secondary.	Opaques	1		Mainly magnetite maghemite(?). Some elongated pyrite crystals along a tiny veinlet.									WHERE SAMPLED CONTINUED: coarser grained rock.  MAIN COMMENTS: Two generations of veins: 1) actinolite + chlorite + opaques, which is cut by 2) white mineral (ab) + chlorite. Second vein is chlorite at the contact with the first vein. Two veins consist of an ab core surrounded by a colorless to pale brown mineral with anomalous brown birefringence and good cleavage. Groundmass is cryptocrystalline to microlitic.	no	1.22685	-83.73030	1473.10	147336	
111	504	B	158	Rotary	01	012	014	002		0182		DIV	Aphyric basalt	Massive, subophitic	Unit 182	Fine		Plagioclase	<0.5	<0.5	0.5       		Euhedral-subhedral	Chloritization beginning along fractures.		    	     	          					    	   	          					    	    	          					    	    	          					Clinopyroxene	39	41	<0.2		Subhedral-anhedral	Slightly altered to actinolite.	Plagioclase	35	36	<0.3		Laths, euhedral	Chloritization beginning. Fluid inclusions.	Magnetite	10	17	<0.2		Subhedral-euhedral	Replaced by sphene.	Olivine	0	4	<0.2		Subhedral	Altered to chlorite and mixed-layer clays.	Zircon	<<0.5	<0.5	<0.005		Euhedral			Vesicles	0						        							        								Clays	2	Ol		Chlorite	3	Ol, plag		Actinolite	2	Cpx		Sphene	7	Magnetite																		GROUNDMASS CONTINUED: Mineral = apatite, % present = << 0.5, % original = < 0.5, size = < 0.005 mm, morphology = euhedral. Mineral = pyrite, % present = 1.5, % original = 1.5, size = < 0.2 mm, morphology = euhedral, comment = slightly disseminated in groundmass.	no	1.22685	-83.73030	1482.50	148262	
111	504	B	158	Rotary	01	016	018	003	A	0182		DIV	Aphyric basalt	Microlitic	Unit 182	Very fine to aphanitic			    	    	          					    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	30	30	0.2		Tabular, acicular		Clinopyroxene	50	55	<0.1		Quenched	Sheaves of skeletal cpx. Fresh except in the halo, where altered to actinolite needles.	Titanomagnetite	10	15	<0.2		Skeletal,euhedral-	Morphology continued: subhedral. COMMENTS: Altered to maghemite(?), sphene.																Vesicles	0						        							        								Zeolites	Tr	Veins	Probably laumontite.	Chlorite	3	Veins, halos		Actinolite	6	Cpx, veins		Sphene	1	Magnetite	Replaces primary Ti-mag and secondary oxides.	Opaques	Tr		Magnetite. secondary magnetite is generally larger sized with more variability in size. Scarce pyrite in interstices between microlites.													Groundmass is microlitic and partially replaced by actinolite in halos. One vein (0.3 mm wide) is filled with fibrous actinolite + minor chlorite + scarce sphene and zeolite (Laumontite?). Other veins are perpendicular to the length of the slide; these contain elongated magnetite + actinolite + minor chlorite (in the vein and in the halos, < 1 mm) and cross cut the first vein described. Both primary and secondary magnetite can be altered to sphene. Darker grey magnetite in reflected light is described as maghemite, but is more probably sphene or leucoxene(?).	no	1.22685	-83.73030	1482.50	148266	
111	504	B	158	Rotary	01	032	034	004		0182		DIV	Sparsely plagioclase phyric to aphyric basalt	Cryptocrystalline to microlitic	Unit 182	Very fine to aphanitic		Plagioclase	<1  	<1  	</=1      		Tabular	Patchy extinction, probably recrystallized to Ab.		    	     	          					    	   	          					    	    	          					    	    	          					Clinopyroxene	70	80	?		Skeletal	Quenched crystals, needles forming sheaves.	Plagioclase	15	15	?		Tabular	Fresh.	Titanomagnetite	2	5	?		Skeletal	Partiallt altered to maghemite(?).																Vesicles	0						        							        								Clays	Tr	Vein	Brownish clay inside a segment of chlorite vein.	Chlorite	7	Veins	Blue-gray birefringence in veins.	Albite	<1	Plag	Possibly replaces plag in some places.	Actinolite	1	Veins	In veins as needles in rosette-like aggregates.	Sphene	Tr	Magnetite		Quartz	1	Veins	In the center of a chlorite vein and of a chlorite-prehnite vein.	Opaques	<1	Ti-mag	Ti-mag replaced by maghemite(?). Secondary and primary magnetite alter to sphene. Scarce pyrite and chalcopyrite.	Zeolite	2	Vein	In one vein. Relief higher than quartz and yellow birefringence. Probably laumontite.	Large crystals of magnetite associated with veins are secondary. Sulfides are enlarged within veins. Veins 1-2 mm wide, with minerals (quartz and zeolite) and green external halos of predominately chlorite. Zeolite is associated with actinolite needles. Veins 3 1 mm wide, filled with chlorite + actinolite.	no	1.22685	-83.73030	1482.50	148282	
111	504	B	159	Rotary	01	047	049	008		0184		DIV	Sparsely plagioclase clinopyroxene phyric basalt	Intergranular, subophitic, porphyritic	Contact between unit 183 and unit 184	Medium with fine-grained patches.		Plagioclase	1   	1   	0.6       		Euhedral	Zoned on margins. Also strained/undulose extinction.	Clinopyroxene	<1  	< 1  	0.5       		Euhedral	Contains stubby plag crystals. Very small amounts of alteration to actinolite.		    	   	          					    	    	          					    	    	          					Plagioclase	45	50	<0.3	An 60	Bladed	Palmate texture in places. Monor alteration to clays +/- chlorite.	Clinopyroxene	20	40	<0.15		Subhedral-anhedral	Heavily altered to actinolite +/- chlorite.	Olivine	0	5	<0.2		Anhedral	Altered to chlorite + magnetite + actinolite +/- pyrite.	Magnetite	3	3	<0.1		Subhedral	Minor alteration to maghemite.									Vesicles	0						        							        								Clays	1-2	Plag, ol	Severely altered plag. Minor replacement of ol.	Chlorite	8	Ol	Replaces groundmass ol.	Actinolite	20	Cpx	Generally replaces up to 50% groundmass cpx. Partial replacement of ol.	Pyrite	<1	Ol (?)	Associated with chlorite replacing groundmass ol.																	See thin section description 111-504B-158R-1 (Piece 4, 32-34 cm) for contact summary. Groundmass has patchy appearance with some 1 mm sized areas of fine-grained cpx and plag. Generally very altered +/- altered ol (now chlorite). These patches surround phenocrysts in places. Patches appear essentially 100% recrystallized.	no	1.22685	-83.73030	1488.10	148856	
111	504	B	159	Rotary	01	047	049	008		0183		DIV	Aphyric basalt	Subophitic, diabasic	Contact of Unit 183 with Unit 184	Fine			    	    	          					    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	55	55	<0.5	An 56	Bladed	Palmate texture in some places.	Clinopyroxene	30	41	<0.3		Anhedral	Rarely in sheaf-like bundles. Replaced by actinolite.	Magnetite	4	4	<0.1		Subhedral	Very minor alteration to maghemite.																Vesicles	0						        							        								Clays	<1	Plag	Minor replacement of plag.	Chlorite	<1	Ol(?)	Minor replacement of ferromags (ol?).	Actinolite	10	Cpx		Pyrite	<1																			No obviously intrusive contact. Texture varies from medium-grained porphyritic to fine-grained aphyric but is not a simple gradation. Some of the finer-grained material forms "matrix" to "clots" of medium-grained material along supposed contact. However, mineralogy suggests that fine-grained material could be chilled facies of same dyke unit. Two units described separately because of textural differences.	no	1.22685	-83.73030	1488.10	148856	
111	504	B	161	Rotary	01	004	006	001		0187		DIV	Sparsely plagioclase olivine phyric basalt	Intergranular, subophitic	Unit 187	Medium		Olivine	0   	<1  	<2        		Subhedral	Replaced by chlorite and actinolite.	Plagioclase	1   	1    	<2.5      	An 65	Euhedral	Polysynthetic twining, marginal zoning.		    	   	          					    	    	          					    	    	          					Plagioclase	48	50	<0.6	An 60	Euhedral	Bladed crystals.	Clinopyroxene	20	40	<0.5		Anhedral	Subophitic, chadacrysts of plag.	Olivine	0	5	<0.5		Subhedral	Altered to chlorite + actinolite + oxides.	Oxides	3	3	<0.2	Iron/titanium	Euhedral										Vugs    	1	1.5	Dispersed	Chlorite, actinolite	Irregular	Possible vugs in matrix. Difficult to distinguish from irregular ol pseudomorphs.	        							        								Clays	2	Plag	Replaces groundmass plag.	Chlorite	4	Ol		Actinolite	20	Cpx, ol	Replaces groundmass crystals and phenocrysts of olivine. Also replaces cpx.	Oxides	<1	Ol	Associated with groundmass oxides + ol alteration.	Sulfides	<1	Ol, groundmass	Associated with groundmass and phenocryst alteration of ol.														no	1.22685	-83.73030	1504.10	150413	
111	504	B	163	Rotary	01	043	045	008		0187		DIV	Sparsely plagioclase clinopyroxene olivine phyric basalt	Intergranular, subophitic	Unit 187	Medium		Olivine	0   	<1  	1         		Anhedral	Completely altered to actinolite + Fe oxides.	Plagioclase	1   	1    	1.5       	An 54	Euhedral		Clinopyroxene	<1  	<1 	1         		Subhedral			    	    	          					    	    	          					Plagioclase	50	55	</=1		Euhedral	Average grain size = 0.6 mm.	Clinopyroxene	30	40	</=1		Anhedral	Average grain size = 0.5 mm.	Olivine	0	2	</=0.5		Anhedral	Replaced by actinolite.	Oxides	3	3	</=0.2	Iron/titanium	Subhedral	Average grain size generally < 0.2 mm.									Vesicles	0						        							        								Clays	5	Plag	Replacing plag along cleavage traces and fractures.	Chlorite	1	Plag, ol	Replacing plag along fractures. Minor replacement of ol.	Actinolite	10	Cpx, ol	Replacing ol phenocrysts, matrix and groundmass cpx.	Oxides	1	Ol, matrix	Subhedral, dusty crystals. Replaces ol + matrix grains.																	Moderately altered rock. No real phenocrysts, but plag +/- cpx glomerocrysts are slightly larger than average matrix grain. Plag glomerocrysts seem to grow side-by-side, with their long axes parallel. Plag extinction is undulose; some zoning on margins of more equant crystals. Some larger cpx crystals are oikocrysts.	no	1.22685	-83.73030	1511.60	151202	
111	504	B	163	Rotary	01	124	126	001		0187		DIV	Amphibolitized metabasalt (aphyric)	Subophitic, poikilitic	Unit 187, near a brecciated zone	Medium			    	    	          					    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	0	40	?		?	May be some relics.	Clinopyroxene	2	50	?		?	Relics.	Titanomagnetite	5	10	?		Subhedral, skeletal	Altered.																Vesicles	0						        							        								Zeolites	2	Plag	Laumontite(?) replacing plag and part of matrix.	Albite	13	Plag		Actinolite	76	Cpx, veins	Acicular to prismatic. Replaces plag and cpx.	Sphene	2	Ti-mag		Hornblende	Tr?		Possibly prismatic crystals of actinolite/hornblende.													Acicular to prismatic actinolite crystals replace cpx. Sheaves of needles also occur in altered plag. Sub-parallel needles and aggregates form veins. This rock is completely altered, predominately to actinolite.	no	1.22685	-83.73030	1511.60	151283	
111	504	B	163	Rotary	02	017	018	003	A	0188		DIV	Aphyric diabase basalt	Intergranular, subophitic diabase	Unit 188	Medium			    	    	          					    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	48	50	<1.5		Euhedral-subhedral	Some alteration to clays.	Clinopyroxene	25	40	<1		Anhedral	Altered to chlorite + actinolite.	Olivine	0	6	<1		Anhedral	Altered to chlorite + actinolite.	Oxides	4	4	<0.2	Iron/titanium	Euhedral	Minor alteration to sphene.									Vesicles	0						        							        								Clays	4	Plag, ol	Minor replacement of ol.	Chlorite	6	Ol, plag, cpx		Actinolite	11	Cpx, ol	Predominately replaces cpx.	Pyrite	Tr	Ol	Associated with ol alteration.	Sphene	Tr	Oxides	Associated with oxide alteration.	Oxides	2	Ol	Magnetite. Replacement of groundmass ol.									This rock is a coarse diabase. Essentially aphyric with one or two large (up to 1.5 mm) cpx and plag crystals. Grain size of matrix approaches the size of these larger crystals. Some of these slightly coarser patches may indicate glomerocrysts, intratelluric growth, although there is no clear evidence to support this. Considered aphyric.	no	1.22685	-83.73030	1513.10	151326	
111	504	B	164	Rotary	01	007	009	001		0188		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt	Glomerophyric, subophitic	Unit 188	Fine to medium		Olivine	0   	<1  	1         		Subhedral	Altered to chlorite, opaques, minor actinolite.	Plagioclase	5   	5    	0.5-2.0   		Euhedral	Tabular, zoned. Altered to chlorite.	Clinopyroxene	1   	1  	1         		Subhedral			    	    	          					    	    	          					Plagioclase	30	30	0.30		Laths, euhedral	Fresh.	Clinopyroxene	30	54	0.30		Anhedral	Altered to actinolite.	Titanomagnetite	4	10	0.15		Subhedral,euhedral,	Morphology continued: skeletal. COMMENTS:  Altered.																Vesicles	0						        							        								Chlorite	6	Plag, ol, matrix	Alteration of plag along fractures.	Albite	3	Plag	Replacement of some plag?	Actinolite	21	Plag	Greenish, acicular to prismatic crystals. Subhedral to anhedral.	Pyrite	Tr		Scarce interstitial crystals.	Chalcopyrite	Tr		Subhedral to anhedral crystals in interstices.													Rock is slightly altered.	no	1.22685	-83.73030	1515.10	151516	
111	504	B	165	Rotary	01	073	076	009		0189		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt	Subophitic, intergranular	Unit 189	Medium		Olivine	0   	1   	<1.5      		Subhedral	Replaced by chlorite + actinolite + oxides.	Plagioclase	3   	3    	<2        	An 54 - An 30	Euhedral-subhedral	Very often a glomerocrysts. Fractured.	Clinopyroxene	1   	1  	<2        		Subhedral	Marginal plag inclusions. Fractured.		    	    	          					    	    	          					Plagioclase	40	46	0.8	An 40 - An 30	?		Clinopyroxene	30	40	0.2		?		Olivine	0	5	0.8		?		Oxides	3	4	0.1	Iron/titanium	?										Vesicles	0						        							        								Clays	6	Ol	Replaces plag especially along fractures.	Chlorite	4	Ol	Chlorite + actinolite form pseudomorphs after ol.	Actinolite	12	Ol, cpx	Partial replacement of Ol.	Sphene	<1	Oxides	Marginal replacement of iron/titanium oxides.	Oxides	<1	Ol, oxides	Associated with altered ol.													Groundmass in variable in grain size, with patches (2-3 mm) of finer grained crystals. These patches often show palmate texture. Plag glomerocrysts show zoning and undulose extinction in places.	no	1.22685	-83.73030	1529.50	153023	
111	504	B	166	Rotary	01	000	003	001		0190		DIV	Sparsely plagioclase clinopyroxene phyric basalt	Glomerophyric, microlitic	Unit 190, near a brecciated area	Very fine to fine		Plagioclase	</=5	</=5	0.1-0.6   		Tabular, euhedral	Not homogeneously distributed.	Clinopyroxene	<1  	< 1  	0.1-0.5   		Euhedral	Altered in the pale halos.		    	   	          					    	    	          					    	    	          					Plagioclase	10	12	0.30-0.75		Laths, euhedral	Fresh. Needles and laths.	Clinopyroxene	5	5	0.30		Skeletal, euhedral		Titanomagnetite	3	5	0.03		Anhedral	Dusty. Altered to sphene																Vesicles	0						        							        								Chlorite	4	Veins	Localized in a corner and enriched in opaques.	Albite	2	Plag, mesostasis	Probably replacing plag.	Actinolite	10	Cpx, veins, mesostasis	In monomineralic veins or replacing groundmass ol.	Sphene	2	Magnetite	Replacing matrix titanomagnetite. Also borders actinolite veins.	Pyrite	Tr		Anhedral. Rare.	Magnetite	Tr	Veins	Secondary magnetite occurs in chlorite vein.									One open fracture was probably filled with chlorite which was mechanically removed in thin section manufacture. Some chlorite + sphene remaining on the borders and in the halo. The chlorite vein contains about 30% magnetite. Groundmass is altered in 1-5 mm halos around veins.	no	1.22685	-83.73030	1543.50	154350	
111	504	B	169	Rotary	01	066	068	014		0191		DIV	Moderately plagioclase clinopyroxene olivine phyric basalt	Massive, subophitic	Unit 191	Medium		Olivine	0   	<1  	1.5       		Anhedral-subhedral	Replaced by actinolite, pyrite.	Plagioclase	3   	3    	0.5-2.0   		Euhedral	Glomerocrysts.	Clinopyroxene	1   	1  	0.5-4.0   		Subhedral			    	    	          					    	    	          					Olivine	0	10	<0.5		Anhedral	Replaced by actinolite.	Plagioclase	35	40	<0.5		Subhedral	Replaced by chlorite, actinolite, zeolite.	Clinopyroxene	20	40	<0.5		Anhedral	Replaced by actinolite.	Magnetite	5	6	<0.5		Anhedral	Replaced by sphene.									Vesicles	0						        							        								Clays	1	Ol	Replaces groundmass olivine.	Zeolites	2	Plag		Chlorite	2	Plag		Actinolite	28	Ol, plag, cpx		Sphene	2	Magnetite		Pyrite	1	Ol											no	1.22685	-83.73030	1547.60	154825	
111	504	B	170	Rotary	01	050	051	011		0192		DIV	Basaltic breccia	Hypohaline, glomerophyric	Boot basket chip	Very fine to fine		Olivine	0   	<1  	1         		?	Completely altered to mixed-layer clays.	Plagioclase	2   	5    	1.0-2.0   		Euhedral, tabular	Glomerocrysts.	Clinopyroxene	2   	2  	<1        		Subhedral			    	    	          					    	    	          					Plagioclase	9	52	0.1-0.5		?	Altered to mixed-layer clays.	Clinopyroxene	10	40	0.1		?	Altered to mixed-layer clays.																							Vesicles	0						        							        								Clays	30	Veins, cpx	Mixed-layer clays replace matrix. Some vermicular clay also.	Clays	32	Veins, ol, plag	Mixed-layer clays after ol.	Zeolites	3	Plag, veins	In veins as radiating fibers.	Chlorite	10	Ol, plag, veins		Quartz	2	Veins	In veins bordered by chlorite. Subhexagonal.	Anhydrite	Tr		Anhedral. In breccia cement.	Chalcopyrite	Tr	Veins	In quartz veins. Pseudohexagonal to anhedral.	Pyrite	Tr		In altered matrix. Subhedral to anhedral.	Actual Id for this thin section is 111-504B-Boot basket chip, the information given above is ficticous.  MAIN COMMENTS:  Quartz is subhedral to euhedral (basal hexagonal sections). Chalcopyrite (negative, euhedral crystals) grows in quartz interstices. Pyrite replaces plag and contains numerous mesostasis inclusions. in one veins, vermicular mineral (clay?).	no	1.22685	-83.73030	1553.60	155409