IGNEOUS AND CRYSTALLINE ROCKS. 
27 
A. Biotite-granite. Liparose. Contains quartz, orthoclase, plagio- 
clase (microperthite), biotite, magnetite, sphene, apatite, and zircon. 
P. K. C. 1340. 
B. Basic segregation in biotite-granite. Aherose. Contains biotite, 
hornblende, quartz, plagioclase, microperthite, much sphene and 
apatite, some magnetite and zircon. P. R. C. 1338. 
C. Another sample of B, but containing more hornblende. Aherose. 
P. R. C. 1339. 
D. Nordmarkite. Phlegrose. Contains orthoclase, plagioclase, 
quartz, hornblende, magnetite, apatite, and zircon, with very little 
biotite, titanite, diopside, and allanite. P. R. C. 1341. 
E. Basic segregation in nordmarkite. AJcerose. Contains horn- 
blende, augite, microperthite, orthoclase, plagioclase, quartz, magnet- 
ite, zircon, and apatite. P. R. C. 1342. 
F. Hornblende-paisanite. Liparose. Dike. Contains orthoclase, 
quartz, hornblende, magnetite, apatite, and zircon. P. R. C. 1347. 
Si0 2 
A1A 
Fe 2 3 
FeO 
MgO 
CaO 
Na 2 
K 2 
H 2 Oatll0°.... 
H 2 above 100° 
Ti0 2 
PA 
Zr0 2 
MnO 
(NiCo)O 
BaO 
C0 2 
F 
CI 
FeS 2 ... 
LessO 
71.90 
14.12 
1.20 
.86 
.33 
1.13 
4.52 
4.81 
.18 
.42 
.35 
.11 
.04 
.05 
one 
.04 
.21 
.06 
.02 
trace 
100. 35 
.03 
100. 32 
56.01 
« 15. 19 
2.34 
4.89 
4.67 
4.85 
5.66 
2.16 
.36 
.90 
1.13 
.53 
.40 
.03 
trace? 
undet. 
undet. 
undet. 
.09 
99.21 
59.27 
15.76 
2.07 
3.57 
3.04 
3.69 
5.63 
3. 33 
.23 
.74 
1.12 
.42 
.04 
.37 
trace 
trace? 
.30 
.42 
.03 
.07 
100. 10 
.19 
99. 91 
65.43 
16.11 
1.15 
2.85 
.40 
1.49 
5.00 
5.97 
.19 
.39 
.50 
.13 
.11 
.23 
(?) 
.03 
trace? 
.08 
.05 
.07 
100. 18 
.04 
100. 14 
56. 51 
16.59 
1.35 
6.59 
2.52 
4.96 
5. 15 
3. 05 
.21 
.71 
1.20 
.41 
.04 
.24 
trace? 
.03 
.33 
.24 
.07 
.06 
100.26 
.11 
100. 15 
73. 03 
13.43 
.40 
1.49 
.14 
.79 
4.91 
4.54 
.18 
.35 
.30 
.06 
.06 
.15 
(?) 
trace? 
trace? 
.08 
.03 
.09 
100.03 
.04 
99.99 
" Including Zr0 2 
