Mineral:  Olivine (Fo91) (Fe+2,Mg)2SiO4

Sample No.: olivine.10

XRD Analysis:  None.

Chemistry:  Microprobe analysis by W.I. Ridley, USGS, showed good 
Fo91 composition:

SiO2	40.60
TiO2	0.14
Al2O3	0.05
Cr2O3	0.06
MnO	0.12
NiO	0.28
FeO 	7.93
MgO 	50.70
CaO	0.06
	_____
Total	99.94
