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

Sample No.:  olivine.12

XRD Analysis:  Pure forsterite.

Chemistry:  Microprobe analysis indicated that the sample is 
homogeneous within and between grains, and 91.2 mole percent 
forsterite.  Average of 10 analyses:

SiO2	40.29
TiO2	0.02
Al2O3	0.05
Cr2O3	0.05
K2O	0.01
Na2O	0.02
FeO	8.62
MgO 	50.26
CaO	0.11
	_____
Total	99.43
