68 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
F. Shoshonite lava sheet, Lamar River, south of Bison Peak. Shoshonose. Con- 
tains plagioclase, orthoclase, augite, olivine, magnetite, and serpentine, with amyg- 
dules of zeolite and calcite. Analysis by Eakins, No. 1086. 
G. Shoshonite lava sheet, southeast fork of Beaverdam Creek. Shoshonose. Con- 
tains plagioclase, orthoclase, augite, and serpentinized olivine. 
Hl. Leucite (?) shoshonite lava sheet, mountain east of Pyramid Peak. Shoshonose. 
Contains feldspars, olivine, serpentine, augite, magnetite, brown mica, and impure 
leucite (?). 
I. Olivine-free shoshonite dike, northeast of Indian Peak. Shoshonose. Contains 
augite, plagioclase, biotite, and magnetite. 
J. Shoshonite lava sheet, Two Ocean Pass. Shoshonose. Contains orthoclase, 
serpentinized olivine, magnetite, augite, chlorite, biotite, apatite, labradorite. Dried 
at 104°. 
Analyses G, H, I by Eakins, Nos. 1371, 1375, 1379. Analysis J by Whitfield, No. 
906. 
F G H. I J. 
54. 86 56.05 
17. 28 19.70 
4.08 3.74 
2. 28 2.32 
4.19 2.51 
5. 42 4.34 
3.94 3. 29 
3.96 4. 44 
2.16 1.86 
- 69 - 98 
- 48 - 66 
19 trace 
ON | sistas 
cate sininne - 06 
apeebade -19 
99.90 | 100.14 
K. Banakite dike, head of Lamar River. Monzonose. Contains augite, serpen- 
tinized olivine, orthoclase, plagioclase, biotite, magnetite, ilmenite, apatite, and 
analcite. Adjoins rock B. Analysis by Eakins, No. 1375. 
L. Banakite dike, Hoodoo Mountain. Monzonose. Like K, but with amygdaloidal 
zeolites. Analysis by Eakins, No. 1371. 
M. Banakite dike, Ishawooa Canyon, Wyoming. Monzonose. Like K and L, 
but more feldspathic. Contains a little serpentine, probably from olivine; also pos- 
sibly analcite or sodalite. Analysis by Eakins, No. 1086. 
