THIN SECTION:	"U1301B-7R-1, 108-110 cm (Piece 17)"				TS #	16	Unit:1C	"OBSERVER: RC, MS"
ROCK NAME: 	Moderately clinopyroxene-olivine-plagioclase phyric basalt							
WHERE SAMPLED:	Pillow interior							
GRAIN SIZE:	Cryptocrystalline							
TEXTURE:	"Spherulitic, hyalo-ophitic, vesicular"							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								
Plagioclase	3	3	0.1	1	0.5		Euhedral; lath and stabby	"Occurs singly, but is more common in monomineralic, bimineralic, and polymineralic glomeroporphyritic clots with pyroxene. Contains glass inclusions."
Clinopyroxene	1	1	0.1	0.5	0.3		Subhedral	Present as glomeroporphyritic clots associated with plagioclase laths.
Olivine	0	1	0.1	0.5	0.2		Euhedral	Completely replaced by brown clay minerals in the non-glass part.

GROUNDMASS								
Plagioclase	2	2		<0.1			Euhedral	Laths and needles.
Clinopyroxene	Tr	Tr		<0.1			Anbhedral	
Olivine	0	Tr		<0.1			Euhedral	
Mesostasis	89	94						"Sheaf-spherulitic texture, including opaque minerals."
SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	2						"Olivine, mesostasis, vein, vesicles"	Fibrous/round.
FeO(OH) / hematite	1						"Vesicles, vein"	
Pyrite	Tr						Mesostasis	Present in the mesostasis.

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	2	Even	0.1	1.5	0.8		"Saponite, Opaques / hematite"	



COMMENTS :