THIN SECTION:	"U1301B-35R-2, 107-109 cm (Piece 18)"				TS #	52	Unit:8B	"OBSERVER: MS, RC"
ROCK NAME: 	Moderately clinopyroxene-olivine-plagioclase phyric basalt							
WHERE SAMPLED:	Vein							
GRAIN SIZE:	Crypto to microcrystaslline							
TEXTURE:	"Hyalo-ophytic, glomeroporphyritic"							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								

Plagioclase	3.5	3.5	0.8	2.2	1.2		Euhedral to skeletal	"Occurs as laths, and in mono- and poly-mineralic glomeroporphyritic clots with olivine + pyroxene. "
Clinopyroxene	1.7	1.7	0.8	3	1.5		Subhedral to anhedral	Present as glomeroporphyritic clots associated with plagioclase laths.
Olivine	0	Tr	0.8	1.2	0.5		Euhedral to subhedral	Completely pseudomorphed by brown saponite.

GROUNDMASS								
Plagioclase	16.8	16.8		<0.4			Euhedral	Microlaths and needles.
Clinopyroxene	5.9	5.9		<0.4			Euhedral to anhedral	Occurs singly or attached to/intergrown with plagioclase.
Olivine	0	1.8		<0.3			Subhedral	Completely pseudomorphed by brown saponite.
Mesostasis	62	68.2						Characterized by sheaf-spherulitic to plumose texture.

SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	5						"Olivine, mesostasis, vein, vesicles"	
Feox	5						"Olivine, mesostasis, vein, vesicles"	
Pyrite	1						"Mesostasis, vesicles"	

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	2.1	Even	0.1	0.9	0.5		"Saponite, Feox, pyrite"	

COMMENTS : 	1.2 mm saponite and Feox vein.