INDEX. 



Page. 



Abe Lincoln mine, location of 16 



Ajax mine, depth of 19 



Anaconda mine, production of 16 



Anchoria-Leland mine, production and 



depth of 16 



Bancroft, G. J., on downward -moving 



waters 28 



Basalt dikes, ore in 25-26 



Battle Mountain vein system, mines on 18 



Beacon Hill, mines on 17 



Breccia, occurrence and character of ... 12, 13-14 



Bruce, J., work of 8 



Bull Hill, mines on 17 



Calaverite, composition of 20 



Calcite, occurrence of 21 



Carbonate Hill, prospects on 20 



Celestite, occurrence of 21 



Chlorination process, use of 10 



Conundrum mine, depth of 16 



Cripple Creek granite, occurrence of 13 



Cross, Whitman, work of 7, 11 



Cyanide process, use of 10 



Damon mine, location of 17 



Dikes, mineralized basalt, description of .. 25-26 

 Doctor-Jack Pot mine, production and 



depth of 16 



Dolomite, occurrence of 21 



Douglas, E. M., work of 7 



El Paso shaft, depth of 15 



Elkton mine, production and depth of 17 



JElkton shaft, depth of 15 



Evans, R. T., work of 7 



Feldspar, occurrence of 21 



Finch, J. W., acknowledgments to 7 



Finch, J. W., on downward-moving waters. 28 



Fissures, character of 22 



See also Veins: 



Fluorine mine, production of 20 



Fluorite, occurrence of 21 



Galena, occurrence of 20 



Gangue minerals, description of 21 



Gases, subterranean, discussion of 32-33 



Globe Hill, mines on 16 



Gold, discovery of, date of 7, 8 



production of 8-9 



See also Ores. 



Gold Coin mine, production of is 



Gold Coin shaft, depth of. 15, 19 



Gold Hill, mines on 16 



<3old King mine, production of 16 



-Golden Cycle mine, production of is 



Page. 

 Granite, occurrence and character of ... 11, 12-13 



replacemen t deposits in 24-25 



Graton, L. C., work of 8 



Half Moon mine, production of 16 



Hills, V. G., work of 32 



Hull City mine, production of 18 



Igneous rocks, occurrence and character of. 11-14 



Independence mine, production of 19 



Independence shaft, depth of 15 



Isabella mine, oxidation in, depth of 26 



production and depth of 18 



Jerry Johnson mine, location of 17 



Last Dollar mine, production and depth of. 18 



Lillie mine, production of 18 



Lillie shaft, depth of 9, 15, 18 



Map, topographic, revision of 7-8 



Mary McKinney mine, depth of 16 



Metallurgy and mining, discussion of 9-10 



Midget mine, production and depth of 16 



Mineralized basalt dikes, description of 25-26 



Minerals, description of 20-21 



Mines, area including 14 



description of 15-20 



methods of working 9 



Mining and metallurgy, discussion of 9-10 



Moon-Anchor mine, production of 16 



Moose mine, production of 17 



Rock, A. M., work of 8 



Ore bodies, relation of, to depth 26-31 



structure of 22 



types of 22-26 



Ores, character of 20-21 



treatment of 10 



Oxidized ores, occurrence and character of. 21 



Oxidized zone, depth of 26 



Penrose, R. A. F., jr., work of 7,14 



Phonolite, occurrence of 12 



Pikes Peak granite, occurrence of 12 



Pinnacle mine, location of 17 



Portland mine, production of 10, 19 



Portland vein system, mines on * 19 



Poverty Gulch, mines near 16 



Production of gold, table showing 9 



Productive area, extent of 14 



Pyrite, occurrence of 20 



Quartz, occurrence of ' 21 



Raven Hill, mines on 17 



Replacement deposits in granite, descrip- 

 tion of 24-25 



Rhodochrosite. occurrence of 21 



Roscoelite, occurrence of 21 



35 



