Mineral:  Labradorite (Na,Ca)Al(Al,Si)Si2O8

Sample No.: labrador.1

XRD Analysis:  Pure labradorite.

Chemistry:  Sample analyzed and described in Stewart, D.B., Walker, 
G.W., Wright, T.L., and Fahey, J.J., 1966, Physical properties of calcic 
labradorite from Lake County, Oregon:  American Mineralogist, v. 51, 
p. 177-197.

SiO2	51.42
TiO2	0.04
Al2O3	30.76
Fe2O3	0.24
FeO	0.17
MnO	not reported
MgO	0.05
CaO	13.42
Na2O	3.52
K2O	0.23
H2O	0.04
	_____
Total	99.89
