Per Cent. Atomic Quotients. Proportionals. 
Silex, 64:00 . 1-412 4:01 
Alumina, : Wil... 0°352 1:00 
Magnesia, O57 .. 0:028 
Lime, - » Trace, . . . 0000 0:396 ie 
Potash, . . 1273... 0271 (99 | 
Soda, . . 3:00 0:097 
Loss by ignition, 0°55 
98:96 
Sp. gr.=2°540. 
THREE-ROCK MOUNTAIN. 
Per Cent. Atomic Quotients. Proportionals. 
Se lke lal GSAO se 1444 . ... 4:19 
Alumin, .... 17-71 . US. . Saree 1:00 
Measnesia, . . ¢ ie. 1°77 0-088 
Mamie, . ... «.-« Trace, 0-000 0-420 1-22 
Mash, . . so 10°68 0°227 
2 3:26 . 0:105 
Loss by ignition, 0°69 
99:51 
Sp. gr. = 2'562. 
LOUGH BRAY. 
Per Cent. Atomic Quotients. Proportionals. 
Silex, . : 65°44 . - 44... . 404 
Alumina, . 1836 . 0357 1:00 
Magnesia, - 0:00 - 0:000 
iime, . . sa POOR . 0:038 
Potash, és 12°34 - 0:262 ouns 108 
Soda, A eda” NG 0:088 
Loss by ignition, 0°52 
100°19 
Sp. gr. = 2'554. 
ey 
139 
DALKEY QUARRIES. 
