THIN SECTION:	"U1301B-34R-1, 52-54 cm (Piece 8)"				TS #	51	Unit:7C	"OBSERVER: MS, RC"
ROCK NAME: 	Sparsely clinopyroxene-plagioclase-olivine phyric basalt							
WHERE SAMPLED:	Pillow interior							
GRAIN SIZE:	Cryptocrystalline							
TEXTURE:	"Hyalo-ophytic to intersertal, glomeroporphyritic, pilotaxitic"							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								
Plagioclase	3	3	0.2	1.4	1.5		Euhedral to subhedral	"Occurs singly, but is more common in monomineralic glomeroporphyritic clots."
Clinopyroxene	1	1	0.2	0.5	1.3		Subhedral to anhedral	Mostly in bimineralic glomeroporphyritic clots (plag + px). 
Olivine	0	Tr	0.2	0.3	0.6		Euhedral to subhedral	Completely replaced by saponite + Feox.

GROUNDMASS								
Plagioclase	12	12		<0.2			Euhedral	Laths and needles.
Clinopyroxene	7	7		<0.2			Subhedral to anhedral	Occurs singly or attached to/intergrown with plagioclase.
Olivine	0	2		<0.2			Euhedral to subhedral	Completely replaced by saponite + Feox.
Mesostasis	70	75						Includes opaque minerals

SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	7						"Olivine, mesostasis"	Brown to green in color.
FeO(OH)	6						"Olivine, mesostasis"	
Pyrite	Tr						Mesostasis	

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	3	Even	0.1	0.3	0.2		"Saponite, Feox"	


COMMENTS : 	"Brown halo contains Feox, which is predominantly filling vesicles."