INDEX. 
499 
Page. 
Bobtail mine, opening of. 433 
Bobtail veins, location and description of. 159, 
103,104,105,107,179, 433, 439,440,440-447, 
452-453,450, 400-404,471-472, 474, 478-479 
Bogart mine, location and description of. 365 
Bolivar claim, location and description of. 283 
Bonanza King vein, location and description of. 174, 
192,200,200,298,302-304 
Breccia, alteration of. 184,191-192 
character of. 30-31,97-100 
description of. 19,30-32,97-9S, 191 
extent of. 25-30,110 
fissures in. 159 
formation of. 24-25,32,38 
granite and, contact of.25-30 
intrusions in. 32-30 
occurrence of. 19-21,25-30, 35, 97, passim 271-495 
ores in. 146 
origin of. 56 
oxidation of. 197 
Brind Mountain, prospects on. 150,495 
rocks on.■. 50,495 
section through, figure showing. 37 
Browne, A. W., analysis by. 255 
Bruce, J., work of.'. 14 
Brunton, D. W., on mine drainage. 250-251 
Bryan Fraction claim, location of. 349 
Buena Vista incline, location of. 389-390 
Buena Vista vein, character oi. 123, 
156,157,158,103,160,179,212,387,389-392,395 
projection of, figure showing. 390 
section of, figure showing. 390 
Buffalo and Cripple Creek Gold Mining Company, mine 
of. 490 
Bull Cliff, drainage of. 245 
rocks of.; 21,30,70,83,88,198,381,383 
view of. 362 
Bull Cliff trachydolerite. See Trachydolerite. 
Bull Hill, drainage of. 244-245 
location of. 362 
mines on.*. 149,302 
production of. 135 
rocks of. 29,32,70,91,93,98,198,302,3S3 
south slope of, view of. 362 
veins on. 302 
views from. 280 
water level at. " 
Burke and Fry shaft, location of. 322 
Burns, James, location by. i . 430 
Burns dike, location of. 399 
Burns mine, description of. 398 
production of. 398 
veins of. 149,398 
Burns shaft, character of. 431,449 
section of, figure showing. 434 
i 
Calaverite, analyses of. n7 
composition of. 169 
description of. 117-118,169 
occurrence of. 4, 6, 114-118, passiiji 169-487 
See also Tellurides. 
Calcite, description of... 124 
occurrence of. 4,114, 
169,174,186,187,188,190,191,192,194,337,343,443 
Calcium, presence of, in vein-forming water.,. 222 
Caledonia mine, description of. 313 
Calf Mountain, rocks of. 43,48,50 
Page. 
Cameron, location of. 281 
mines and prospects near. 281,383-386 
rocks near. 30,281 
Campbell vein, character of. 391,392,393,417,421 
Capitalization, abuses of. 144-145 
Captain veins, location and description of. 154 
157,159,162,177,205,434,437-445,448 
face of, figure showing. 162 
Carbonate Hill, prospects on. 151,271 
rocks on. 271 
Carbonate Queen mine, description of. 495 
veins of..T. 494,495 
Carbonates, description of. 122-129 
'presence of, in vem-forming waters. 221 
Carbon dioxide, danger from. 253 
occurrence of. 252,258-259 
Cardinal mine, description of. 313 
Cardinal vein, character of. 164 
Carr vein, location of. 427 
Cashen fault, location and description of_ 166-167,489-491 
Cashen vein, character and description of. 489,493 
Catherine dike, location of. 336 
Celestite, description of. 124-125,220 
occurrence of. 4,6,114,169,174,175,182,220,286,287,340,341 
vein of. 183 
Chalcanthite, description of. 126 
occurrence of. 4,114 
Chalcedony, description of. 123 
occurrence of. 4,100.114,169,174,176,178,190,200 
Chalcocite, description of. 122 
occurrence of. 114,169 
Chalcopyrite, description of. 121 
occurrence of. 114,169,174,353 
Champion claim, location of. 478 
Chance claim, location of. 291 
Chance vein, location and description of. 162,166,292-297 
section of, figure showing. 295 
Chasm, formation of. 24 
See also Volcanic eruptions. 
Cheyenne vein, character of.. 164,170,188,206,209,389,391,392 
projection of, figure showing. 390 
Chicago and Cripple Creek tunnel, minerals in. 121,126 
Chicago tunnel, breccia in. 25,197 
location and description of. 277,285 
Chicken Hawk claim, location of. 330 
Chief shaft, location of. 315 
Chlorides, occurrence and source of. 219-220 
Chlorination, employment and cost of. 4-5,139-140 
plants for, location of. 139 
process of. 140-142 
Chlorite, description of. 128 
occurrence of. 114,128,188 
Chloropal, description of. 128 
occurrence of. 114,128,200 
Christmas mine, description of. 422-424 
veins of. 423-424 
workings in.:. 408,422 
Christmas shaft, section through, figure showing. 423 
Chrysocolla, description of. 129 
occurrence of. 114,286 
Cinnabar, description of. 121 
occurrence of. 114 
City View claim, location of. 291 
City View dike, location of. 166,293,294 
City View vein, location and description of. 292-294,297 
C. K. & N. mine, description of. 355-358 
gas in. 262,358 
geology of. 356 
* 
