16161A 15CC 244.00 244.10 YEAT I 26 1 S RT PLAG-OL-CPX MICROPHYRIC BASALT 2 S % SOURCE ISIR, SEE ALSO P. 305, ALTERED; 3 S TEX FINE-GRAINED,GLASSY,MICROPHYRIC* 4 P PLAG 0.05-1.25LATHS 5 P % APPROX COMP AN68,RARE OSCILLATORY ZONING OR NORMAL 6 P % ZONING (CALCIC LABRADORITE),ALSO AS MODERATELY 7 P % ALIGNED THIN LABRADORITE LATHS 100-700 MICRONS 8 P % LONG; 9 P AUGITE 0.05-0.25ANHEDRAL GRAINS,VARIOLITIC 10 P SHEAFS 11 P % 2VZ NEAR 60 DEGREES OCCURRING AS VARIOLITIC 12 P % SHEAFS OR AS ANHEDRAL GRAINS TO 200 MICRONS ACROSS 13 P % ASSOCIATED WITH LABRADORITE IN PHENOCRYST 14 P % CLUSTERS,Z-C =40,Z-X=0.015; 15 P OL 0.1-0.75EUHEDRAL 16 P % NEARLY COMPLETELY ALTERED* 17 G GNDMASS VARIOLITIC 18 G % INCLUDES PYX+MAGN+CHLOROPHAEITE,DEVITRIFIED; 19 G OP.MINS 20 G % SHORT OCTAHEDRAL CHAINS,INDIVIDUAL OCTAHEDRA* 21 A IDDINGS OL 22 A SERP OL 23 V 0.1-0.3 FINE-GRAINED, 24 V GLASSY BASALT, 25 V SERP,IDDINGS 26