IGNEOUS AND CRYSTALLINE ROCKS. 
191 
F. Meta-andesite-tuff. Described in 14th Ann., p. 441. Contains 
plagioclase, augite, epidote, chlorite, and secondary hornblende. P. 
R. C. 719. 
G. Uralite-diorite, 1 mile southeast of Forbestown. Described in 
17th Ann., Part I, p. 521. Contains plagioclase, hornblende, and 
magnetite. P. R. C. 751. 
H. Basalt, Oroville, Table Mountain. Described in 14th Ann., p. 
441. Contains plagioclase, olivine, augite, and magnetite. P. R. C. 
718. 
I. Altered peridotite, 5 miles northeast of Strawberry Valley. 
Largely serpentine, with olivine, hornblende, magnetite, and calcite or 
dolomite. P. R. C. 742. 
Si0 2 .. 
A1 2 3 . 
Fe 2 3 . 
FeO.. 
MgO . 
CaO.. 
Na 2 0. 
H 2 Oatl00°.... 
H 2 above 100° 
Ti0 2 
PA 
Cr 2 3 
MnO 
NiO 
SrO 
BaO 
Li 2 
C0 2 
CI 
F 
S0 3 
FeS 2 
54.66 
15.85 
1.82 
5.12 
5.64 
8.75 
3.46 
.47 
.25 
2.48 
.67 
.15 
.18 
trace? 
trace 
.04 
none 
.39 
.09 
100. 02 
G. 
51.07 
14.93 
6.44 
5.98 
4.84 
7.89 
5.04 
.16 
.24 
1.73 
1.65 
.19 
22 
trace 
trace 
trace 
100. 38 
ii. 
50. 66 
13.97 
2.55 
10.20 
4.45 
8.08 
3.32 
1.95 
.27 
.43 
2.39 
1.01 
.29 
trace 
trace 
.22 
none 
02 
99.81 
44.81 
a 1.88 
1.98 
4.52 
30.91 
6.58 
.15 
.15 
6.88 
.02 
.29 
.13 
.09 
none 
none 
1.79 
100. 18 
a Includes possible Ti0 2 . 
