Mineral:  Sanidine (K,Na)Al3O8

Sample No.:  sanidine.1

XRD Analysis:  Pure sanidine.

Chemistry:  Microprobe analysis showed the sample to be 
homogeneous within and between grains and to be of typical 
sanidine composition, except for the unusually low albite content.

SiO2	64.53
Al2O3	18.76
FeO	0.17
MgO	0.04
CaO	0.02
K2O	13.96
Na2O	1.30
TiO2	0.03
MnO	0.04
	_____
Total	98.86
