29278 35 1 170 220 429.00 429.20 RI I 23 1 S RT GLASS 2 S % PALE BROWN,HOMOGENEOUS,SOURCE IS IR; 3 S WS CHILLED PILLOW MARGIN* 4 P PLAG TO 2 5 P % PATCHILY ZONED; 6 P OL EUHEDRAL 7 P % SMALL; 8 P SPINEL 9 P % REDDISH CHROME-SPINEL* 10 G % GLASSY ZONE GRADES INTO A DARK BROWN,NARROW ZONE 11 G % OF SPHERULITIC DEVELOPMENT WHICH IN TURN GRADES 12 G % INTO DARK BROWN MICROXTLLINE BASALT CONTAINING 13 G % A COMBINATION OF XTLLINE AND SPHERULITIC REGIONS, 14 G % ALL ZONES ARE CUT BY THICK CALCITE VEINS RIMMED 15 G % BY DELICATE QUARTZ XTLS,THESE ARE IN TURN CUT BY 16 G % THIN,IRREGULAR VEINS OF PALE YELLOW 17 G % MONTMORILLONITE* 18 A CALCITE VEINS, 19 A VESICLES 20 A MONT VEINS 21 V EMPTY+CALCITE ROUNDED 22 V % A FEW VESICLES EITHER EMPTY OR CALCITE-FILLED* 23 29278 35 3 250 350 429.00 432.30 RI I 20 1 S RT PLAG PHYRIC BASALT 2 S % SOURCE IS IR FOR ALL LEG 29 THIN SECTIONS; 3 S TEX INTERSERTAL* 4 P PLAG 21 TO 3 5 P % LARGE PHENOS ZONED FROM MOTTLED CORES OF AN64 COMP 6 P % TO AN30 RIMS,MOST PHENO COMPS ARE IN RANGE AN50- 7 P % 55,OFTEN OCCUR IN GLOMEROPHYRIC PATCHES UP TO 5MM 8 P % IN SIZE,MANY CONTAIN IRREGULAR-SHAPED INCLUSIONS 9 P % OF DEVITRIFIED DARK BROWN GLASS* 10 G PLAG LATHS 11 G % FRESH,APPROX COMP AN45; 12 G PYX FIBROUS-SKELETAL 13 G % INTERSTITIAL,ALTERED,AVERAGE GROUNDMASS GRAINSIZE 14 G % IS .075-.1MM* 15 V CALCITE ROUNDED 16 V % RARE,USUALLY ROUNDED AND RIMMED BY DEVITRIFIED 17 V % DARK BROWN GLASS+FIBROUS ANTIGORITE AND FILLED 18 V % WITH PLATY CALCITE,IRREGULAR VESICLES ARE PARTLY 19 V % TO WHOLLY FILLED WITH YELLOWISH SERPENTINE* 20 29278 35CC 0 0 429.00 433.60 RI I 20 1 S RT PLAG PHYRIC BASALT; 2 S TEX INTERSERTAL* 3 P PLAG 16 2 4 P % LARGEST PHENOS ARE APPROX 5MM,THE AVERAGE APPROX 5 P % 2MM,PHENOS FREQUENTLY ENCLOSE IRREGULAR PATCHES OF 6 P % BROWN GLASS,MAXIMUM ZONING IN PHENOS IS AN63 TO 7 P % THIN RIMS OF AN41,OCCURS IN GLOMEROPHYRIC PATCHES 8 P % WITH PHENOS OF SUBHEDRAL,COLORLESS CPX,ALSO 9 P % PRESENT ARE RARE MICROPHENOS OF SUBHEDRAL,REDDISH- 10 P % BROWN SPINEL* 11 G PLAG 12 G % ZONED FROM AN50 TO AN44; 13 G GLASS 14 G % MESOSTASIS GLASS IS DARK BROWN,PARTLY REXTLLIZED 15 G % AND ALTERED* 16 V MESOSTAS GLASS 17 V % RARE,FILLED WITH BROWN,QUENCHED MESOSTASIS GLASS 18 V % XTLLIZED TO SUBSPHERULITIC INTERGROWTHS OF PYX 19 V % AND TITANOMAGNETITE* 20