CLARKE.] 
IGNEOUS AND CRYSTALLINE ROCKS. 
225 
F. Gabbro, east of Beverly Creek. Contains diallage and u basic" 
plagioclase, with pyrite and serpentine as alteration products. 
G. Olivine-diabase, Camas Land. Contains augite, olivine, plagio- 
clase, magnetite, and apatite. 
H. Diabase, dike on ridge west of Turnpike Creek. Contains pla- 
gioclase, augite, olivine, magnetite, and apatite. 
T. Basalt, middle fork of Teanaway River. Contains augite, plagio- 
clase, magnetite, and apatite, with a glassy base. 
Si0 2 
ALA 
Fe 2 3 
FeO 
MgO 
CaO 
Na 2 
K 2 
H 2 OatllO°.... 
H 2 above 110° 
Ti0 2 
PA 
Cr 2 3 
V 2 3 
MnO 
NiO 
SrO 
BaO 
Li 2 
FeS 2 
S 
48. 58 
20.23 
1.26 
3.02 
7.59 
14.01 
2.25 
.19 
.28 
2.68 
.09 
trace 
trace 
trace 
none 
none 
none 
none 
10 
100. 25 
51.98 
15.99 
3.10 
5. 88 
5.09 
•9.68 
2.71 
.81 
.48 
2.08 
1.71 
.31 
none 
ii. 
.10 
none 
none 
.03 
trace 
.01 
99.96 
57.21 
12.99 
3.28 
10. 18 
1.59 
5. 97 
3.07 
1.61 
.68 
1.03 
1.72 
.44 
none 
none 
.24 
trace 
trace 
.06 
trace 
.13 
100. 20 
i. 
53. 35 
12. 90 
2.64 
11.28 
2.68 
6.96 
2.83 
1.40 
.91 
1.76 
2.44 
.45 
none 
.04 
.25 
trace 
trace 
.05 
trace 
.13 
100. 07 
Bull. 108 
-15 
