THIN SECTION:	"U1301B-11R-1, 80-82 cm (Piece 14a)"				TS #	21	Unit:2A	"OBSERVER: RC, MS"
ROCK NAME: 	Highly olivine-clinopyroxene-plagioclase phyric basalt							
WHERE SAMPLED:	Massive unit							
GRAIN SIZE:	Cryptocrystalline							
TEXTURE:	"Intersertal, glomeroporphyritic."							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								
Plagioclase	12	12	0.4	3.6	1.2		Euhedral to skeletal	Occurs as laths and mono- and poly-mineralic glomeroporphyritic clots with olivine + pyroxene. 
Clinopyroxene	3	3	0.3	1	0.4		Subhedral to anhedral	Present as glomeroporphyritic clots associated with plagioclase laths.
Olivine	0	1	0.2	1.2	0.6		Euhedral to subhedral	Completely pseudomorphed  by brown and green saponite.

GROUNDMASS								
Plagioclase	23	23		<0.4			Euhedral	Microlaths and needles.
Clinopyroxene	7	7		<0.3			Euhedral to anhedral	Occurs singly or attached to/intergrown with plagioclase.
Olivine	0	2		<0.2			Subhedral	
Mesostasis	48	55						

			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	4						"Olivine, mesostasis, vein"	Brown to green saponite in the vesicles and olivine phenocrysts.
Celadonite	1						Vesicles.	Present in the cores of vesicles.
Pyrite	Tr							
Oxides	5						"Olivine, vesicles, vein"	

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	2	Even	0.2	2.5	0.5		"Saponite, celadonite"	



COMMENTS :