58 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
100.40 | 100.21 |........ 99.77 99. 91 
@ Probably contains other rare earths. 
F. Orendite, Fifteenmile Spring, Leucite Hills. Orendose. Contains predomi- 
nating leucite and sanidine, with phlogopite, a little biotite, diopside, and amphi- 
bole, and accessory apatite and rutile. Sp. gr., 2.686, 23.5°° P.R.C. 72 and 572. 
G. Orendite, North Table Butte, Leucite Hills. Orendose. Composition like F. 
Sp. gr., 2.699, 19° P.R. 0.570. 
H. Groundmass of F. Sp. gr., 2.615, 19°. Not cited in published paper. 
I. Diopside separated from mixed wyomingite and madupite. Sp. gr., 3.290, 20°. 
Analyzed in the Denver laboratory. P,O, included with TiQ,. 
J. Dacite (?), Garfield Peak. Phenocrysts of plagioclase and hornblende, with 
microscopic sphene and apatite in a groundmass containing plagioclase, orthoclase, 
quartz, and magnetite. Sp. gr., 2.576, 26.2°. P. R. C. 159. 
