THIN SECTION:	"U1301B-32R-1, 78-80 cm (Piece 13)"				TS #	48	Unit:7C	"OBSERVER: RC, MS"
ROCK NAME: 	Highly clinopyroxene-plagioclase phyric basalt							
WHERE SAMPLED:	Pillow rim							
GRAIN SIZE:	Cryptocrystalline							
TEXTURE:	"Hyalo-ophytic to intersertal, glomeroporphyritic, pilotaxitic"							
PRIMARY	PERCENT 	PERCENT	SIZE (mm)			APPROX.		
MINERALOGY	PRESENT 	ORIGINAL	min.	max.	av.	COMP.	MORPHOLOGY	COMMENTS
PHENOCRYSTS								
Plagioclase	3	3	0.2	1.3	1.5		Euhedral to subhedral	"Occurs singly, but is more common in monomineralic, bimineralic and polymineralic glomeroporphyritic clots with pyroxene."
Clinopyroxene	1	1	0.2	1.2	1.3		Subhedral to anhedral	Present singly and in glomeroporphyritic clots or associated with plagioclase laths.
Olivine	0	Tr	0.2	0.6	0.6		Euhedral to subhedral	Completely replaced green by brown saponite + Feox / iddingsite.

GROUNDMASS								
Plagioclase	1	1		<0.2			Euhedral	Laths and needles.
Clinopyroxene	Tr	Tr		<0.2			Subhedral to anhedral	Occurs singly or attached to/intergrown with plagioclase.
Olivine	0	Tr		<0.2			Euhedral to subhedral	Completely replaced by clay + Feox.
Mesostasis	90	95						

SECONDARY			SIZE (mm)					
MINERALOGY	PERCENT		min.	max.	av.		REPLACING / FILLING	COMMENTS
Saponite	2						"Olivine, mesostasis, vein"	Brown to green in color.
Hematite / Feox	3						Vesicles	

VESICLES/			SIZE (mm)					
CAVITIES	PERCENT	 LOCATION	min.	max.	av.		FILLING / MORPHOLOGY	COMMENTS
Vesicles	3	Even	0.1	0.7	0.3		"Saponite, Feox"	

COMMENTS : 	"Three veins (<0.5 to 0.1 mm) filled with saponite and Feox. An Feox-rich vein is present in the alteration halo (black to gray), the weak alteration halo contains pale brown to green saponite."