Classification of Igneous Rocks. 
137 
136 Proceedings of the Royal Society of Edinburgh. [Sess. 
List of 1000 Rocks 
Group. 
Si0 2 . 
TiO s . 
P 2 0 6 - 
H 2 0. 
aia 
Fo*0 3 . 
FeO. 
MgO. CaO. 
Na.>0. 
k 2 o. 
Total. 
Sp. Gr. 
47 
42-5 
4-9 
185 
3-4 
6*3 
30 8*7 
71 
40 
99-9 
2-78 
42-1 
1-0 
2*4 
1*8 
18*7 
1*7 
4*8 
35 10*8 
HO 
1*9 
99-7 
19 rocks 
469 
•9 
*5 
1*7 
200 
3-7 
40 
20 8*4 
7-5 
30 
1001 
2-76 
+ 
26 
±2*3 
20 
±21 
±20 
±y-9 
48 
b abbbb 
50-2 
*4 
20-1 
25 
5-7 
37 7*8 
30 
7-8 
100-8 
493 
18-5 
70 
5*6 
38 10-4 
34 
100-2 
2-90 1 
49-2 
•6 
191 
1*8 
10*3 
50 8*8 
30 
99-9 
160 
71 
4*5 
5 0 83 
4-5 
4-8 
100-2 
•3 
19-8 
2-6 
5*3 
2-8 81 
3*2 
91 
100-2 
'I 
•8 
19-9 
2*5 
5-3 
5-2 80 
5-5 
40 
100-0 
48'2 
3-2 
192 
10*9 
5-2 70 
1-7 
3-9 
1001 
200 
70 
4*1 101 
2-2 
4-5 
1010 
47-7 
•4 
18-4 
2-5 
5*7 
4-8 9-4 
2-8 
7-6 
21-3 
7*3 
4-9 
3-8 97 
1-6 
5 5 
1010 
2-79 
■4 
171 
5*4 
5-3 10*7 
2*2 * 
90 
100-7 
•4 
•9 
220 
80 
2-4 101 
3 - 3 
71 
100-7 
2*83 
3 3 
19-3 
10-8 
1*5 
43 93 
40 
21 
99-8 
42-2 
•3 
6-2 
16-3 
30 
9*7 
31 10*1 
21 
71 
100-0 
2-62 
41-0 
16 
24 -2 
9-5 
51 110 
57 
1*8 
99-9 
15 rocks 
47-0 
■1 -1 | 
1-2 
195 
5-2 
5-2 
4*2 9 3 
33 
5-2 
100-2 
2-78 
± 
1*6 
±1*6 
±5 
L-7 
±io 
±2 
1 
±80 
49 
b b a 
aaa 
54-3 
•6 
101 
71 
5-8 
6*5 80 
41 
2-2 
99-6 
2-90? 
53 1 
l - 8 
■7 
8-9 
33 
9-6 
14*4 68 
■7 
•5 
99-7 
3 09 
52-1 
•7 
11*9 
1-9 
7 3 
12-5 78 
20 
3 0 
100-0 
2-94 
51 '8 
1*4 
13-4 
101 
2-9 
74 109 
•2 
100-7 
51-8 
1-4 
1 
•6 
12-8 
30 
70 107 
21 
•4 
999 
303 
51 ’7 
10 
11*4 
12-6 
70 10-8 
35 
•y 
99-3 
51*2 
1-5 
1*1 
80 
8-9 
81 
71 90 
2-8 
1*3 
2-88 
51-0 
20 
140 
130 
6 0 110 
20 
10 
100-0 
2-75 
50-6 
•8 
1*7 
10-3 
4-9 
7-7 
93 94 
2-8 
1-2 
98-7 
49-7 
1*5 
9-4 
15-7 
1*2 
9-4 10-3 
2*8 
•2 
100-0 
49-7 
1-7 
11 
11 
12-9 
7*4 
4-8 
6*6 10-3 
30 
1*3 
100-0 
2-92 
49-1 
2-3 
•3 
13-4 
6 5 
5-9 
9-6 80 
3-4 
10 
100-4 
49-0 
2*5 
150 
11*5 
9-7 95 
2-5 
•3 
1000 
48-0 
1*9 
*5 
2*2 
13*6 
2-9 
8-4 
8*7 8-4 
3*4 
20 
100-0 
46-7 
1*7 
11*7 
2-7 
8*4 
11*3 7*9 
60 
97-2 
46 "6 
1*8 
• *1 
3*2 
152 
35 
7-8 
8*7 101 
2-4 
100-5 
2 "87 
46-6 
31 
2*1 
9*6 
14-7 
10*1 80 
2-6 
1-8 
2-90? 
17 rocks 
50-2 
•9 
•2 
1-4 
11*8 
60 
6-7 
8-9 9-4 
2-8 
1-2 
99-7 
2-92 
1 
±1-1 
±1*7 
±1-4 
±1*0 
±1-0 
±6-2 
1907-8.] 
continued. 
Whitman Cross, Table XV. 
iV. Jahrb., 1901, voL ii., p. 239. 
Nephelinite (hauyno- 
Ptyre). 
Ijolite. 
Mt. Vulture, Italy. 
Kuusamo, Finland. 
H. S. Washington, J.G . , v., p. 370, 1897. 
A. Geikie, p. 149. 
Q. Journ ., 1906 (Dr Evans), p. 112. 
N. Jahrb., 1892, vol. ii., p. 418. 
N. Jahrb., 1900, vol. ii., p. 388. 
H. S. Washington, J.G., viii., p. 613, 1900. 
N. Jahrb., 1902, vol. i., p. 411. 
N. Jahrb., vol. ii., 1899. 
H. S. Washington, not published. 
Fuchs, N. Jahrb. fur Min., 1869, p. 79. 
Whitman Cross, p. 202. 
Y. Sabatini, Mem. Cta. G. Ital., x., p. 163, 1900. 
N. Jahrb., 1905, vol. ii., p. 57. 
L. Ricciardi, Gazz. Ghim. Ital., xvii., p. 9, 1887. 
Hatch, Petrology, p. 203. 
Leucite tephrite. 
Basalt, average. 
Basalt. 
Trachyte. 
Leucite basanite. 
Kulaite. 
Andesite. 
Lava. 
Leucite basanite. 
Leucite basalt. 
Leucitite. 
Mica diabase. 
Hauynophyre. 
Orvieto, Italy. 
Mediterranean. 
Laacher See. 
Kula, Asia Minor. 
Algiers. 
Vesuvius eruption, 1858. 
Vesuvius. 
Vesuvius. 
Capo di Bose, Italy. 
Rocca di Papa, Italy. 
Bohemia. 
Mt. Vulture, Italy. 
Madeira. 
Roth, Beitrage zur Petrog., 1869, p. cxxx. 
Geol. Surv. India, 1897, p. 28. 
Q. Journ., 1900, p. 538. 
E. Cohen, N.J.B.B., v., p. 233, 1887. 
N. Jahrb., 1892, vol. ii., p. 427. 
Q. Journ., 1890, p. 327 (Cohen). 
17. Jahrb., 1903, vol. i., p. 414. 
Olivine dolerite. 
Augite norite. 
Kentallerite. 
Olivine diabase. 
Diabase. 
Lava, average. 
Biot, hornbl. granite. 
Eregur, Madras. 
Argyllshire. 
Orange River Colony. 
New Haven. 
Hawaii. 
Zampach, near Eule. 
A. Geikie, edit. 1888, p. 149. 
Q. Journ., 1895, p. 318. 
P Giacomelli, Soc. Alp. Trident., xix., p. 406, 
Anamesite, average. 
Basic pumice. 
Basalt tuff. 
Challenger Expedition, 297. 
Tyrol. 
N. Jahrb'., 1905, vol. ii., p. 213. 
17. Jahrb., 1903-4, suppl. 18, p. 467. 
Mean of five basaltic rocks. 
Dolorite. 
Rohn. 
Londorf. 
A. Geikie, p. 150. 
Geol. Gesellschaft, vol. Ivi., p. 20. 
(Houghton), Prestwich, i., p. 37. 
X- Jahrb., 1906, vol. ii., p. 71. 
Roth, Beitrage zur Petrog., 1869, p. cx. 
Gabbro, average. 
Basalt. 
Lava. 
Olivine basalt lava. 
Olivine basalt. 
Bromburg, Hanover. 
Aden. 
Dvynoch, Skye. 
Hessen. 
