94 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
13. LIVINGSTON QUADRANGLE. 
Rocks analyzed for J. P. Iddings, who furnishes the descriptions. Published by 
W. H. Emmons, in Jour. Geology, vol. 16, p. 193. Analyses by G: Steiger, record Nos, 
2135, 2147. 
A. Granodiorite, 14 miles northwest of Haystack Mountain. Adamellose. Con- 
tains plagioclase, orthoclase, quartz, hornblende, biotite, pyroxene, and magnetite. 
B. Orthoclase gabbro, 1 mile northeast of Haystack Mountain. Shoshonose. Con- 
tains plagioclase, orthoclase, quartz, pyroxene, biotite, magnetite, apatite, and very 
little altered olivine. 
C. Pyroxene separated from B. 
'D. Olivine gabbro, one-half mile northeast of Haystack Mountain. Hessose. 
Contains olivine, plagioclase, pyroxene, biotite, and magnetite. 
S,SO3 and ZrO: absent. 
E. Granodiorite porphyry, 1 mile northeast of Haystack Mountain. Harzose. 
Contains plagioclase, subordinate orthoclase, quartz, ‘biotite, pyroxene, magnetite, 
and little hornblende. 
F. Quartz diorite, north of Haystack Mountain. Tonalose. Nearly the same 
mineral composition as E, 
G. Biotite-orthoclase gabbro, north of Haystack Mountain, between Blue and 
Mud Lakes. Aonzonose. Contains plagioclase, orthoclase, a little quartz, pyroxene, 
biotite, magnetite, and apatite. 
H. Mica separated from G: 
COs, ZrOo, S, and SOz absent. 
