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
109	669	A	001	Positive Displacement	01	007	009	001		0001		DIV	Aphyric basalt	Variolitic to microlitic	Unit 1, pillow or flow interior,(cont.)	Fine		Olivine	Tr  	Tr  	0.3-0.6   		Subhedral			    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	29	29	51		Acicular, bunches	Radiating. Associated with rare ol nucleus of plag. L/W = 10-30.	Olivine	3	3	0.05-0.2		Euhedral, skeletal	Generally attached to plag.	Clinopyroxene	11	11	<0.1		Radiating, plumose	Rare small grain associated with radiating plag. Product of glass devitrification. Rare euhedral crystals.	Mesostasis	54	54	?		?	Dark brown, isotropic with plag and cpx crystallites.	Opaques	0.5	0.5	3-10mirons	 Magnetite	Anhedral-euhedral	Tiny grains distributed in the mesostasis.		Vesicles	1.5	0.2-0.8	Even		Rounded to irregular	Miaroles in alteration halos are more commonly filled with clays than the vesicles. Empty in fresh mesostasis.	        							        								Clays	2	Mesostasis	Yellow birefringent clay.	Carbonate	Tr	Miaroles	Aragonite, radiating. SEM photo tacken before sectioning.	Fe hydroxide	0.5	Mesostasis	Both red and opaque varieties.				HALO ZONE 34 mm wide				Yellow clay: Strongly colored. Almost cryptocrystalline. Low birefringence. Occurs mainly as homogeneous partial fillings of miaroles. These fillings are up to 3.5 mm in extent,with groundmass plag, cpx, ol, and titanomagnetite projecting into the				clay. Clay has botryoidal, locally radiate growth structure. The same clay also forms partial replacements of brown mesostasis-(?)glassy component. Replacment of mesostasis ocassionally nearly complete. Orange-red clay: Trace amounts, mainly as				miarole lining. Transitioned between yellow clay and ref Few hydroxide.  Red Fe hydroxide: Occurs mainly in fractures, lining vesicles and forming the central parts of miarole fillings. Vesicle linings up to 50m. Cracks < 10m wide locally spacedat				100m intervals. Occasionally occursas 330 - 50m grains attached to miarole walls, then overgrown by yellow clay. In one case, a bleb of Fe hydroxide attached to a miarole wall is continuous with a 31m thick Fe hydroxide veinlet.Cont. in main comments	WHERE SAMPLED CONTINUED: cut perpendicular to dark halo.  SECONDARY MINERAL COMMENTS CONTINUED:  Opaque Fe hydroxide; Occurs as central parts of two or three miarole linings. Point count of halo zone; 26 yellow clay (5%), 7 red Fe hydroxides (1.5%), 1 opaque Fe hydroxide (Tr), and 466 primary phases. Central zone (fresh); Traces of orange to red Fe hydroxide, mainly near vesicle walls. Radiating aggregates of aragonite (biaxial, low 2V, extreme birefringence) in large (5 mm), irregular miarole (also containing hopper ol). This and a smaller aragaonite-filled miarole are in connection with the halo zone. MAIN COMMENTS:  Rare ol phenocrysts are rather microphenocrysts. Mesostasis is cryptocrystalline to microcrystalline with plag,cpx and ol microlites. this section might represent a coarser equivalent of Section 669A-1D-1 (Piece 2, 11-13 cm).	no	23.51700	-45.04583	0000.00	7	
109	669	A	001	Positive Displacement	01	011	013	002		0001		DIV	Aphyric basalt	Intergranular (felty)	Unit 1, pillow or flow interior	Microcrystalline to fine		Olivine	0.5 	0.5 	0.2-0.4   		Euhedral-subhedral	Some embayment. Some glass inclusions.		    	     	          					    	   	          					    	    	          					    	    	          					Olivine	5	7	<0.1		Euhedral,quenched	Radiating, swallow tail.	Plagioclase	26	26	<0.1		Acicular, hopper	Radiating, spherulites.	Clinopyroxene	39	40	0.1-0.3		Anhedral, plumose	Christmas-tree texture, product of glass devitrification.	Mesostasis	21	21	?		?	Dark brown with some cpx and plag crystallites.	Opaques	4.5	5.5	<<0.1	Magnetite, sulfides	Anhedral	Very minute grains in mesostasis or cpx.		Vesicles	2	0.2-0.4	Even	Clays, Fe hydroxide	Rounded or irregular		        							        								Clays	3	Vesicles, miaroles, ol, cpx	Yellow. Replaces olivine and clinopyroxene (staining).	Fe hydroxide	1	Opaques	Reddish brown to red. Individual granules.																									groundmass continued: Segregation vesicle, % present = Tr, % original = Tr, size = 0.2-0.5 mm, morphology = rounded, comment = mostly devitrified glass.	no	23.51700	-45.04583	0000.00	11	
109	669	A	001	Positive Displacement	01	011	012	002		0001		DIV	Aphyric basalt	Spherulitic to variolitic	Unit 1, pillow or flow interior	Microcrystalline		Olivine	Tr  	Tr  	-2.5      		Anhedral	Yellow hydroxide attached to the phenocryst.		    	     	          					    	   	          					    	    	          					    	    	          					Plagioclase	34	35	<0.6		Bundles, hopper,	Morphology continued: acicular. COMMENTS: Radiating. Associated with cpx or attached ol.	Olivine	6	6	<0.1		Euhedral,swallowtail	Attached to plag.	Clinopyroxene	33	33	<0.4		Radiating, plumose	Christmas-tree shape. Forms spherulites with plag or in the mesostasis.	Mesostasis	22	24	?		?	Dark brown, isotropic. Investigation under reflected light reveals plag and cpx crystallites.	Opaques	2	2	microns	Magnetite	Anhedral	Minute grains distributed in the mesostasis only.		Vesicles	2	0.05-0.8	Even	Fe hydroxide	Irregular		        							        								Fe hydroxide	2	Vesicles, mesostasis	Yellow to reddish brown. Associated with plag, cpx, and ol or randomly distributed in the groundmass. The granules are attached to the crystals or interfingered with cpx.																													Actual interval is from 11-13 cm, however the preceeding thin section had the same ID.  Ol phenocrysts are in fact microphenocrysts. These are, however, different from quenched ol grains. Mesostasis is cryptocrystalline with recognizable cpx and plag in a radiating pattern. Segregation vesicles consisting of minute crystals of plag + cpx + cryptocrystalline material constitute approximately 1% of the rock.	no	23.51700	-45.04583	0000.00	11