CLARKE.] 
IGNEOUS AND CRYSTALLINE ROCKS. 
45 
C. Pyroxenicanorthosite, Elizabeth town. Ressose. Contains largely 
labradorite, subordinate light-green augite, less brown hornblende, 
and a little magnetite. 
D. Norite, with close affinity to gabbro. Camptonose. Intrusion in 
C. Contains labradorite, hypersthene, garnets, green augite, brown 
hornblende, a little brown biotite, magnetite, and apatite. 
E. Diabasic norite or gabbro, Elizabethtown. Auvergnose. Con- 
tains the same minerals as D. 
F. Gneissoid derivative, by pressure, of E. Camptonose. The 
same minerals, but with hornblende more abundant. 
G. Gabbro, wall rock of Split Rock mine. Ilessose. Contains 
augite, Irypersthene, brown hornblende, garnet, plagioclase, magnetite, 
and possibly spinel. 
Si0 2 
A1 2 3 
Fe 2 3 
FeO 
MgO 
CaO 
Na 2 
K 2 
H 2 OatllO°... 
H 2 above 110 
Ti0 2 
P 2 5 
v 2 o 3 
NiO, CoO 
MnO 
BaO 
co 2 
s 
56.94 
20.82 
.83 
3.02 
2.36 
9.41 
3.36 
1.58 
.21 
.59 
.44 
.07 
(?) 
trace 
.11 
.05 
.45 
trace 
100. 24 
47.16 
14. 45 
1.61 
13. 81 
5.24 
8.13 
3.09 
1.20 
.12 
.48 
3.37 
.57 
(?) 
.02 
.24 
trace 
.35 
.14 
99.98 
44.97 
15. 38 
2.29 
12.39 
10.89 
7.50 
3.02 
.56 
.10 
.65 
1.18 
.14 
.02 
.02 
.22 
trace 
.23 
.06 
99.64 
46.74 
16. 63 
2.17 
10.60 
6.11 
8.66 
3.81 
.86 
.12 
.73 
2.54 
.33 
(?) 
.03 
.26 
trace 
.07 
.11 
G. 
99.77 
47.88 
18.90 
1.39 
10.45 
7.10 
8.36 
2.75 
.81 
.18 
.43 
1.20 
.20 
(?) 
.02 
.16 
trace 
.12 
.07 
100.02 
Zr0 2 , CI, and F not looked for. Cr 2 3 , Li 2 0, and SrO present in traces. S is, 
part at least, present as pyrrhotite. 
