THIN SECTION:	"U1301B-27R-2, 38-40 cm (Piece 6)"				TS #	44	Unit:7C	"OBSERVER: RC, MS"
ROCK NAME: 	Moderately olivine-clinopyroxene-plagioclase phyric basalt							
WHERE SAMPLED:	Pillow interior							
GRAIN SIZE:	Cryptocrystalline							
TEXTURE:	"Intersertal to intergranular, glomeroporphyritic."							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								
Plagioclase	3	3	0.3	1.2	1.2		Euhedral to skeletal	"Occurs as lath, and mono- and poly-mineralic glomeroporphyritic clots with olivine + pyroxene. "
Clinopyroxene	1	1	0.3	1.5	0.4		Subhedral to anhedral	Present as glomeroporphyritic clots associated with plagioclase laths.
Olivine	0	1	0.3	1	0.6		Euhedral to subhedral	Completely pseudomorphed  by brown saponite.

GROUNDMASS								
Plagioclase	35	35		<0.3			Euhedral	Microlaths and needles.
Clinopyroxene	28	28		<0.3			Euhedral to anhedral	Occurs singly or attached to/intergrown with plagioclase.
Olivine	0	3		<0.3			Subhedral	
Mesostasis	25	27						

SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	4						"Olivine, mesostasis, vein"	Brown to green colored in the vesicles.
Celadonite	2						"Olivine, vesicles, vein"	
Feox	2						"Olivine, vesicles, vein"	


VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	2	Even	0.1	0.5	0.3		Saponite	


COMMENTS : 	Alteration halo (10 mm) across corner of thin section.