Mineral:  Diopside CaMgSi2O6

Sample No.: diopside.1

XRD Analysis:  Diopside plus a trace of mica.  (Spectra of particulate 
samples do show a mica hydroxyl band near 2.7 micrometers). 

Chemistry:  Microprobe analysis showed grains selected to be 
homogeneous within and between grains.  Average of 9 analyses 
indicates that this sample is close to end member composition:

SiO2	54.00
Al2O3	0.23
FeO 	2.63
MgO	17.71
CaO	25.52
K2O 	0.02
Na2O	0.28
TiO2	0.07
MnO	0.18
	_____
Total	100.64
