104 
ANALYSES OF KOCKS^ U. S. GEOLOGICAL SURVEY. 
[no. 228. 
F. Quartz-mica-diorite. Tonalose. Contains biotite, horn))lende, 
augite, hypersthene, plagioclase, orthoclase, and quartz. Analysis 
by Whitfield, No. 921. 
G. Quartz-mica-diorite. Yellowstonose. Contains biotite, horn- 
blende, plagioclase, pyroxene, quartz, and orthoclase. Analysis by 
Whitfield, No. 921. 
H, 1, J. Quartz-mica-diorites. Yellowstonose. Contain horn- 
blende, biotite, plagioclase, orthoclase, and quartz. Analyses by 
Whitfield, Nos. 921 and 830. 
Si0 2 . 
ALA 
Fe 2 3 
FeO. 
MgO. 
CaO. 
Na 2 
K 2 0. 
H 2 0_. 
Ti0 2 . 
PA- 
MnO. 
Li 2 0. 
S0 3 ... 
CL... 
65.11 
16.21 
1.06 
3.19 
2.57 
3. 97 
4.00 
2.51 
.94 
.71 
.02 
none 
• .04 
trace 
none 
100.33 
G. 
65. 60 
17.61 
.95 
2. 76 
1.49 
3.72 
4.36 
2. 36 
.59 
.75 
.16 
none 
.03 
trace 
none 
100. 38 
64. 85 
16.57 
2.10 
2.15 
2.14 
4.01 
3.71 
3.10 
.35 
.91 
.14 
none 
none 
trace 
none 
100.03 
66.05 
16.96 
2.59 
1. 38 
"2.08 
3. 37 
4.20 
2.53 
.69 
.34 
trace 
none 
none 
.03 
trace 
100. 22 
67.54 
17.02 
2.97 
.34 
.13 
3.36 
4.62 
2.28 
.55 
.80 
trace 
trace 
.03 
.26 
.15 
100. 05 
