THE CROWSNEST VOLCANICS. 
23 
from a fresh fragment weighing about 800 grams, all of which 
was powdered and sampled. For comparison the analysis 
of blairmorite-tuff given by Knight is introduced here, as well 
as analyses of other rocks high in analcite. 
Analyses of Blair morite, Blairmorite-tuff , etc . 
I 
II 
III 
IV 
V 
SiO g< . 
54 04 
54-95 
56-75 
54-07 
52-73 
TiO a . . 
0*20 
0-42 
0*30 
0-15 
AltOj 
18-86 
18-64 
20-69 
21*67 
20-05 
Fe a Os, ......... 
3-30 
4-75 
3-52 
3-55 
3-43 
FeO 
0*76 
1-55 
0*59 
0-99 
MnO. 
0*08 
0-34 
trace 
+ «* 
MgO 
0-70 
0*60 
0-11 
0-36 
0-17 
CaO. 
2-32 
2-27 
0-37 
0-36 
3-35 
Na s O. 
9*77 
4-91 
11-45 
8-91 
7-94 
k 2 o...... ... 
2*26 
7-65 
2*90 
4-76 
4*77 
H»0+ .... 
| 7-00 
3-35 
3-18 
5-44 
4*85 
HjO— 
0 90 
0-04 
0-69 
Cih 
0*80 
0*93 
P a G s . . 
■ • 
0-18 
- • 
• • 
trace 
Sp. G 
100-09 
2-388 
100-51 
99-92 
99-27 
99-90 
I. Blairmorite, variety A, Collector J. D. MacKenzie, 
Analyst M. F. Connor. 
II. Blairmorite-tuff, Collector W, W Leach, Analyst 
C. W. Dickson, Canadian Record of Science, 
Montreal, vol. 9, No. 5, 1905, p. 276. 
III. Analcite tinguaite, Pickards point, Manchester, Mass. 
H. S. Washington, Am. Jour. Sci., 4th Ser., vol. 7, 
1898, p. 185. 
IV. /Fgirite tinguaite, Hot Springs, Ark., J. F. Williams, 
Ark. Geol. Surv. 1890, vol. II, p. 370. W. A. 
Noyes, Analyst. 
V. Heronite, Heron Bay, Ontario. A. P. Coleman, 
Jour. Geol. vol. 7, 1899, p. 435. Analyst, H. W. 
Charlton. 
