IGNEOUS AND CRYSTALLINE ROCKS. 
119 
S. Absarokite, Two Ocean Pass. Kentallenose. Contains augite, 
olivine, orthoclase, magnetite, serpentine, little biotite, apatite, and an 
isotropic substance, probably glass. Analysis by J. E. Whitfield, 
record No. 906. 
T. Shoshonite, Beaverdam Creek. Shoshonose. Analysis by Whit- 
field. No. 907. Probably the rock already represented by analysis Gr. 
U. Shoshonite, northeast spur of Sepulchre Mountain. Shoshonose. 
Contains augite and serpentinized olivine, in a groundmass of plagio- 
clase, orthoclase, augite, magnetite, and apatite. Analysis b}^ Whit- 
field, No. 908. 
V. Shoshonite, Baldy Mountain, Bear Gulch, Montana. Shoshonose. 
Contains hypersthene, augite, olivine, plagioclase, orthoclase, and 
magnetite, Analysis by Whitfield, No. 909. 
Si0 2 . 
Fe 2 3 
FeO. 
MgO 
CaO. 
Na 2 
K 2 (). 
H 2 0. 
Ti0 2 
PA 
MnO 
Li,0 
BO,.. 
CI ... 
b( )., . 
51. 68 
14. 07 
4.71 
4.57 
7.72 
6. 65 
2.45 
4.16 
2.09 
1 . OS 
.72 
trace 
trace 
.18 
100.0:5 
T. 
52. 86 
17. 51 
5.18 
3.31 
4.18 
6.51 
3.22 
3.41 
1.76 
1.04 
.53 
trace 
.04 
.22 
.10 
99. 93, 
u. 
51.75 
17.48 
6.42 
1.46 
4.05 
8.20 
3.33 
3.72 
2.26 
.86 
.67 
trace 
trace 
.17 
trace 
100. 37 
V. 
54.97 
18.38 
3.06 
4.22 
2.38 
5.43 
3.45 
3. 37 
.82 
.97 
.42 
trace 
.03 
.03 
trace 
2.92 
100.45 
