THIN SECTION:	"U1301B-16R-1, 83-85 cm (Piece 13)"				TS #	30	Unit:5	"OBSERVER: RC, MS"
ROCK NAME: 	Moderately olivine-clinopyroxene-plagioclase phyric basalt							
WHERE SAMPLED:	Pillow interior							
GRAIN SIZE:	Cryptocrystalline							
TEXTURE:	"Intersertal, glomeroporphyritic"							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								
Plagioclase	5.4	5.4	0.5	4.5	1.3		Euhedral to subhedral	Solitary crystals and as monomineralic and bimineralic glomeroporphyritic clots with clinopyroxene; some glass inclusions present.
Clinopyroxene	3.4	3.4	0.2	1	0.5		Euhedral to anhedral	Present as glomeroporphyritic clots associated with plagioclase laths.
Olivine	0	3	0.2	1	0.5		Euhedral to subhedral	Completely replaced by saponite.

GROUNDMASS								
Plagioclase	28.3	28.3		<0.5			Euhedral	Microlath.
Clinopyroxene	19.6	19.6		<0.2			Euhedral to anhedral	
Olivine	0	5		<0.2			Subhedral	
Mesostasis	31	32.6						

SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	5						"Olivine, mesostasis, vesicles"	Fibrous to granular brown-green saponite.
Feox + iddingsite	2						"Olivine, mesostasis, vesicles"	
Celadonite?	4							

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	2.7	Even	0.1	1	0.5			



COMMENTS : 	Olivine phenocrysts and vesicles in black halos are replaced/filled by saponite and Feox.