THIN SECTION: "U1301B-6R-2, 6-8 cm (Piece 1)" TS # 13 Unit:1C "OBSERVER: MS, RC" ROCK NAME: Moderately clinopyroxene-plagioclase phyric basalt WHERE SAMPLED: Chilled contact GRAIN SIZE: Cryptocrystalline TEXTURE: "Glassy, hyalo-ophitic, spherulitic, glomeroporphyritic" PRIMARY PERCENT PERCENT SIZE (mm) APPROX. MINERALOGY PRESENT ORIGINAL min. max. av. COMP. MORPHOLOGY COMMENTS PHENOCRYSTS Plagioclase 5 5 0.2 2.2 1.4 Euhedral to subhedral "Some has honeycomb texture, glass inclusions in some crystals." Clinopyroxene 3 3 0.2 1.2 0.7 Euhedral to anhedral "Present singly, and in glomeroporphyritic clots associated with plagioclase laths." GROUNDMASS Plagioclase 2 2 <0.2 Euhedral Microlaths. Clinopyroxene 1 1 <0.2 Euhedral to anhedral Olivine 0 3 <0.2 Subhedral Mesostasis 72 73 Glass 8 10 SECONDARY SIZE (mm) MINERALOGY PERCENT min. max. av. REPLACING / FILLING COMMENTS Saponite 2 "Olivine, mesostasis, vesicles" Fibrous to granular brown-green saponite. Feox 4 "Olivine, vesicles" Pyrite Tr "Mesostasis, olivine" Celadonite 1 "Olivine, vesicles" VESICLES/ SIZE (mm) CAVITIES PERCENT LOCATION min. max. av. FILLING / MORPHOLOGY COMMENTS Vesicles 3 Even 0.1 3.3 0.6 "Saponite, Feox" COMMENTS : "0.5-1 mm vein, (fill mostly missing from TS). Some saponite remains along edges."