Mineral:  Barite, BaSO4

Sample No.: barite.1

XRD Analysis:  Pure barite.

Chemistry:  Volatile analysis by C. S. Papp, J. D. Sharkey, and K. J. 
Curry and XRF analysis of the non-volatiles by J. Taggare, A. Bartel, , 
and ICP analysis of cations by P. H. Briggs, USGS Branch of Analytical 
Chemistry, Denver, showed this to be predominantly barite with a 
small amount of strontium substitution:

BaO	58.39
SrO	2.47
CaO	<0.50
SO3	34.42
H2O	0.06
	_____
Total	95.84
