INDEX. 
. A. Page. 
Abe Lincoln mine, description of. 147,276-279 
drainage of. 279 
gas in. 262 
geology of. 276-277 
history of. ’ 276 
location of. 5,147,272,276 
metamorphism in. 192 
minerals in. 121,192,195 
ores in. 174,210,278 
oxidation in.,. 198 
production of.*1. 276 
rocks in. 25 
Section through Stratton’s Independence mine and. 148 
veins of, character of. 156,158,165,177,195,277-278 
wpter level in. 241,279 
change in, figure showing. 242 
workings of. 276 
Abe Lincoln vein, character of. 277-278 
Acacia Gold Mining Company, mines of. 398-399 
Accident mine, description of. 306-308 
minerals in. 122 
ore from. 171,307-308 
rocks in. 306-307 
veins in. 307-308 
workings of. 306 
Acetylene lamp, air test by. 253 
Acknowledgments to those aiding. 14-15,41,233 
Actinolite, occurrence of. 50 
Addie C. shaft, location and description of. 271 
Adularia, occurrence of. 4,176,184,187.188,189, 
190,191,192,193,194,195,282,337,470,339-341 
JEgirine, occurrence of. 63,67,81,103,114,128 
.Egirine-augite, occurrence of. 63,103> 
Aileen claim, location of. 314 
Air, composition of. 252 
tests of. 253 
Ajax Gold Mining Company, mine of. 478 
Ajax mine, description of. 478-484 
dikes in. 91,92,95,480-481 
geology of. 479-481 
location of. 5,150 
minerals in. 120,128,174,185 
ore of. 194,208,213,462,470,481-484 
analyses of. 172,194,483 
plan showing location of. 213 
rock from, analyses of. 194 
shaft of, section through, figure showing. 479 
veins in. 157, 
158,159,162,164,478-479,481-483 
figure showing. 162 
water level in. 240,242 
workings of. 478 
Page. 
Albany tunnel, location and description of.. .*. 366 
minerals in. 128 
Albite, description of. 127 
occurrence of. 51,52,53,73,81,95,103,114,183 
Aldrich, Sherwood, data from. 242 
Alkalies, presence of, in vein-forming water.,. 222-223 
Allen, E. T., analysis by. 170 
Altaite, description of. 116 
Alteration, processes of. 184-204 
processes of, synopsis of. 7 
See also Metasomatism; Hydrometamorphism; 
Oxidation. 
Altman, mines near. 5,387,429 
rocks in. 84,91 
Alunite, description of. 125 
occurrence of. 4,114,170,199,200,377,379 
American Eagle mine, metasomatism in. 190 
water level in. 240,244 
change in, figure showing. 242 
workings of. 29,151,244,380-382 
Amphibole, description of. 63-64,128 
occurrence of... 185 
Anaconda, mines in and near. 5,308,321,330 
Anaconda dike, minerals in. 123 
Anaconda Gold Mining Company, mine of. 308 
Anaconda mine, description of. 308-313 
dip in. 150 
gas in. 313 
geology of. 309 
location of. 5,148 
minerals in. 122 
ore of. 210,311-312 
production of. 148,308 
rocks in. 26,34. 
analysis of. 79 
structure of, plate showing..'. 166 
tunnel in. 291 
veins of.. 158,161,162,165,309-312 
section of, figure showing. 161 
water level in. 312 
change in, figure showing. 242 
workings of. 308 
plan showing. 310 
Anaconda-Raven tunnel, location of.. 315,332 
minerals in. 126 
Anaconda vein, location and description of. 309,311 
Anaconda Mining and Milling Company, mine of. 308 
Anaconda Mining Company, mine of. 308 
Analcite, description of. 127 
occurrence of. 62-63,65,67, 
72-73,74,81,83,85,86,88,92,95,103,114 
Anchor claims, location of. 291,297 
Anchoria-Leland mine, description of. 291-297 
497 
