INDEX 
513 
Page 
Saunders shaft, character of. 394,395 
Sehaller, W. T., analysis by. 52-53,92-93,126,189,192 
on emmonsite. 119 
Schist, alteration of. 184,192 
analysis of. 53 
description of. 3,19,51 
occurrence of. 1, 
19-20.23,271,276-277,281.288,311-312,356,367-368 1 
petrology of. 51-53 j 
Scranton mine, workings of. 433 
Scranton vein, location and description of. 439,440-441 
Sections, geological, figures showing. 37,148; Pocket 
Sedan shaft, location and description of. 281 
Sedimentary deposits, occurrence and character of. 22-23,37 
Sericite, occurrence of. 4,50,55,59,86,1S4-195.340,484 • 
Serpentine, description of. 128 
occurrence of. 54,73,96,114,128,187,188,190,192,195 
Shaft vein, location and description of. 435 
Sheeted zone, description of. 160-165 
figure showing. 162 
fissures of. 16 -165 
intersection of phonolite dike and, OTe at..•_ 164 
figure showing. 212 
occurrence of. 6,159,160-165 
oxidation of... 199 
Sheriff mine, description of. 364-365 
ore in.;... 211,364-365 
veins in. 158,364 
workings of.!. 364 
Sheriff Gold Mining Company, mine of. 364 
Shurtloff mine, description of. 409-412 
geology of. 409 
location of. 408,409 
ores of. 411-412 
production of. 409, 
veins of. 212,410-411 
workings of. 409 
Shurtloff No. 1 vein, location and description of. 380-381,383 
Shurtloff vein, location and description of.212,411-412 
Siderite, occurrence of. 187,188,190 
Sigel vein, location and description of. 416,417-418,422,427,428 
Silica, deposition of. 229 
presence of, in vein-forming water. 217 
Silicates, description of. 122-129 
Silicification, occurrence of. 195 
Sillimanite, occurrence of. 49,50,52,192 
Silver, description of. 115 
occurrence of. 7,169,171, 
182,275,289,303,307,311,319,343,356,379,402,414,418 
production of. 431 
Silver ores, oxidation of.. 203-204 
Sioux Falls and Cripple Creek Gold Mining Company, 
mines of. 280 
Smelting, adoption of. 139 
Smith, A. Mica, on mine gas. 259 
Smith, G. F. H., and Prior, G. T., on calaverite. 116 
Smith-Reilly vein, character of. 318,321 
Snide claim, description of. 331 
Sodalite, description of. 127 I 
occurrence of. 61-62,74,81,83,86,103,114,219 
Solutions, vein-forming. See Water, hot ascending. 
Sorting, methods of. 136-137 j 
South Park shaft, location and description ol. 286 i 
South shaft, location of. 471 ! 
Specimen mine, production of. 380 
Specularite, description of. 123 
occurrence of. 114,169,185 
Sphalerite, deposition of. 225 
Page- 
Sphalerite, occurrence of. 4,6,169,174,175,176,178, 
193,194,275,303-304,307,311,353,443,473.475,493 
Sphene, occurrence of. 78 
Spring Creek granite, description of. 3,47 
occurrence of. 20,23 
petrology of. 47 
Springs, occurrence of. 244 
Spur vein, location and description of. 164,489,490,492 
Squaw gulch, mines on. 287-288 
placers in. 152 
Squaw Mountain, views from. 34,362 
Standard drainage tunnel, drainage by_ 9,235,242,244,246 
Standard tunnel, location of. 315 
Steiger, George, analyses by. 79,182.183,239 
Stibnite, deposition of. 225 
description of. 120-121 
occurrence of. 4,6,114,169,174,353,350,372 
Stilbite, description of. 127 
occurrence of. 114 
Stonehouse vein, location of. 476,477 
Stoping, methods of. 135-136 
Stratton, W. S., development by. 4,131-132,430,449-451 
estate of, mines of. 276,284,285,292,380-383,401,408 
Stratton Cripple Creek Mining and Development Com¬ 
pany. See Stratton, W. S., estate of. 
Stratton’s Independence (Ld.), mine of. 449 
Stratton’s Independence mine, description of. 449-465 
development of. 136 
dip in. 153 
dikes in. 35,438,458-461 
drainage of. 238 
geology of. 457-461 
history of. 4,132,145,449-451 
location of. 5,449 
metasomatism in. 189-190,193 
minerals in. 116,120,121,128,172,189 
ore of. 171,193,203-204,213,450,461-464 
analyses of. 173,202 
oxidation in. 197 
production of. 135,150,451 
rocks in. 30,33,99,189 
analysis of. 189 
sections through, figures showing. 458,459 
section through Abe Lincoln mine and. 148 
tree stump in. 31 
valuation of. 144 
veins in. 132,150,156, 
157,158,159,162,165.167,206,215,452-456,461-464 
view of. 416 
water level in. 197,234,240,242,465 
change in. 238 
figure showing. 242 
workings of. 151,451 
maps showing. 454,455 
Stratton’s Independence-Portland shoot, length of ... 206 
Straub Mountain, prospects on. lgp. 495 
rocks of. 19,22,34,37,38,56,57,495 
section through Grouse Hill and, figure showing .. 37 
Strikes, occurrence of. 4,5,132-134,142-143,451 
Stringer lodes, occurrence of. 160 
Strong Gold Mining Company, mine of. 466 
Strong mine, description of. 466-471 
dikes in. 36,95,460,467-468 
geology of. 467-468 
location of. 5,150,466 
ores of. 469-470 
production of. 135,466 
veins of. 466,469-470 
/ 
