CARBONATE ROCKS. 203 
C. Limestone, Snake River canyon. Analysis by George Steiger, record No. 1909. 
A B. Cc 
Insoluble e2a-ni0 searcacecss ise 2 64 1.19 36 
12 19 10 
3.05 51 10 
COLORADO. 
1. DENVER BASIN. 
Rocks described by Emmons in Mon. XXVIJI. Analyses made by L. G. Eakins, 
in the Denver laboratory. 
A. Upper Wyoming limestone, Morrison. 
B. Niobrara dolomite. 
2. LEADVILLE DISTRICT. 
Rocks described by Emmons in Mon. XII. Analyses A and E by W. F. Hille- 
brand; B, C, and D by A. Guyard; all made in the Denver laboratory. 
A. Upper blue limestone, Silver Wave mine. 
B. Upper blue limestone, Dugan quarry. 
C. Upper blue limestone, Glass-Pendery mine. 
D. Montgomery quarry, near base of blue limestone. 
E. White limestone, upper part, Carbonate Hill quarry. 
A. B. G D. E. 
21 70 227 7.76 11.84 
27 17 -04 ell 1. 66 
21 11 3322 10 1.51 
24 38 -18 57 83 
trace 05 +20 (0.519 Sener 
30.79 | 30.43 | 29.97! 27.26 26. 60 
21.14] 20.78] 21.52 | 20.05 17.41 
03 05 01 02 02 
06 09 02 04 03 
22 04 07 05 48 
trace 12 - 03 07 trace 
46.84 | 46.93 | 47.39 | 43.79 40. 01 
ETPOCE! | isveracysvecollsicce.d ayes trace |........ 
10 14 04 06 05 
trace | trace |........ trace |........ 
0 0. 02 OF | sees siciere 
