THIN SECTION:	"U1301B-5R-2, 91-93 cm (Piece 11b)"				TS #	11	Unit:1C	"OBSERVER: MS, RC"
ROCK NAME: 	Sparsely clinopyroxene-plagioclase phyric basalt							
WHERE SAMPLED:	Vein							
GRAIN SIZE:	Cryptocrystalline							
TEXTURE:	"Hyalo-ophitic to intersertal, spherulitic, glomeroporphyritic"							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								
Plagioclase	3	3	0.5	3	1.8		Euhedral to subhedral	"Occurs singly, but is more common in monomineralic and bimineralic glomeroporphyritic clots with pyroxene."
Clinopyroxene	1	1	0.3	1.5	0.8		Subhedral to anhedral	"Present singly, in glomeroporphyritic clots associated with plagioclase laths. One crystal shows twinning."


GROUNDMASS								
Plagioclase	20	20		<0.5			Euhedral; lath	Microlaths and needles.
Clinopyroxene	2	2		<0.3			Euhedral to anhedral	
Olivine	0	3		<0.5			Subhedral	
Mesostasis	65	71						

SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	4						"Olivine, mesostasis, vesicles"	Fibrous to granular brown-green saponite.
Feox	1						"Olivine, vesicles"	
Cabonate	2						"Olivine, vesicles"	Occur as pseudomorphs of olivine and filling the vesicles.
Pyrite	1						Mesostasis	
Iddingsite	Tr						Vein	
Celadonite	Tr						Vein	

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	1	Even	0.1	1.2	0.6		"Saponite, Feox, carbnonate"	



COMMENTS :