THIN SECTION:	"U1301B-30R-1, 2-4 cm (Piece 1)"				TS #	45	7C	"OBSERVER: MS, RC"
ROCK NAME: 	Aphyric basalt							
WHERE SAMPLED:	Pillow interior							
GRAIN SIZE:	Crypto to microcrystalline							
TEXTURE:	"Intersetal, glomeroporphyritic"							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								



GROUNDMASS								
Plagioclase	25	25		<0.5			Euhedral	Microlaths and needles.
Clinopyroxene	10	10		<0.3			Euhedral to anhedral	Occurs singly or attached to/intergrown with plagioclase.
Olivine	0	5		<0.5			Subhedral	
Mesostasis	52	56						

SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	7						"Olivine, mesostasis, vein"	
Celadonite	1						Vesicles	
Feox	4						"Olivine, mesostasis, vesicles, vein"	
Iddingsite	1						"Olivine, mesostasis"	

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	4	Even	0.1	0.5	0.3		Saponite	

COMMENTS : 	"Mixed halo (green and brown); Green halo zone contains saponite, Feox and iddingsite, non-halo zone contains pale brown saponite."