THIN SECTION:	"U1301B-32R-2, 78-81 cm (Piece 9)"				TS #	49	Unit:7C	"OBSERVER: MS, RC"
ROCK NAME: 	Sparsely clinopyroxene-plagioclase phyric basalt							
WHERE SAMPLED:	Vein							
GRAIN SIZE:	Cryptocrystalline							
TEXTURE:	"Glassy, hyalo-ophitic, spherulitic, glomeroporphyritic, pilotaxitic"							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								
Plagioclase	2	2	0.4	1.5	1.4		Euhedral to subhedral	Solitary crystals or within glomeroporphyritic clots.
Clinopyroxene	1	1	0.4	0.8	0.7		Euhedral to anhedral	"Present singly, in glomeroporphyritic clots associated with plagioclase laths."


GROUNDMASS								
Plagioclase	5	5		<0.4			Euhedral	Microlaths.
Clinopyroxene	3	3		<0.4			Euhedral to anbhedral	
Olivine	0	2		<0.4			Subhedral	
Mesostasis	79	80						"Changes from dark brown subvariolitic, to a orange-brown honeycomb to a yellow-brown honeycomb and finally to a light gray-brown branching texture with increasing distance from the chilled margin."
Glass	0	5						
SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	4						"Olivine, mesostasis, vesicles"	Fibrous to granular brown-green saponite.
Feox	4						"Olivine, mesostasis, vesicles"	
Pyrite	Tr						Mesostasis	

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	5	Even	0.1	0.6	0.4		"Saponite, Feox"	

COMMENTS : 	Radial cracks are filled by saonite (brown) + zeolite. 1.5 mm vein is filled with saponite. Glass part is completely altered.