CLARKE.] 
IGNEOUS AND CRYSTALLINE ROCKS. 
205 
F. Biotite-angite-latite, 1 miles southwest of Clover Meadow. 
Called u trachyte-andesite-tuff " in former edition of this bulletin. 
Contains plagioclase, biotite, augite, magnetite, apatite, and glass. 
Analysis by W. F. Hillebrand, record No. 1597. P. R. C. 762. 
G. Augite-latite, Dardanelle flow, near Clover Meadow. Called kW tra- 
chy te-andesite " in former edition. Contains plagioclase, in part labra- 
dorite, augite, iron ore, some olivine, apatite, and brown glass. The 
potassium is probably in the glass, as no potash mineral was observed. 
Analysis by H. N. Stokes, record No. 1645. P. R. C. 785. 
H. Augite-latite, Table Mountain. Called "basalt" in former edi- 
tion. Contains labradorite, olivine, augite, and magnetite. Analysis 
by Hillebrand, record No. 1273. P. R. C. 724. 
I. Augite-latite, Table Mountain, near Clover Meadow. Contains 
labradorite, augite, olivine, magnetite, apatite, and glass. Analysis 
by George Steiger, record No. 1697. 
F. 
G. 
H. 
I. 
Si0 2 
62. 33 
17.30 
3.00 
1.63 
1.05 
3.23 
4.21 
4.46 
.44 
.75 
1.05 
.29 
.04 
.01 
.08 
.05 
.24 
trace 
59M3 
16.68 
2.54 
3.48 
1.84 
4.09 
3.72 
5.04 
.27 
.72 
1.38 
.58 
.08 
56.19 
16.76 
3.05 
4.18 
3. 79 
6. 53 
2.53 
4.46 
.34 
.66 
.69 
.55 
56.78 
16.86 
3.56 
2.93 
3.41 
6.57 
3.19 
3.48 
.15 
1.21 
1.15 
.42 
A1 2 3 
Fe 2 3 
FeO 
MgO 
CaO 
Na 2 
K 2 
H 2 at 110° 
H 2 above 110° 
Ti0 2 
P 2 5 
Zr0 2 
V„0, - - 
MnO 
trace 
trace 
.14 
none 
.10 
trace 
.19 
trace 
none 
SrO 
BaO 
trace 
Li 2 
C0 9 . . 
.18 
CI 
.05 
trace 
F.. 
c 
.11 
.06 
FeS 2 .. 
1 
100. 33 
100. 04 
100. 02 
99.89 
