None
St. Eugene mine, British Columbia, ore deposits of 291-292 St. Louis, Mo., millerite near 465 St. Philippe, France, brookite at 471 Sales, R. H., on features of oxidation at Butte, Mont W-ai,ra Sales, R. H., on the primary or ondary character of chalcocite at Butte, Mont 205,206 Saline County, Ark., bauxite in.. 476-476 Salmo, British Columbia, tungsten minerals near 429 Salt, distribution of 808 Samarskite, nature of ., 437 San Bernardino County, Cal., vana- dlnlte in 419 San Bmigdlo Canyon, Cal., stibnite in 4U San Francisco district, Utah, angle- site in 868 anhydrite in 491 beaverite In 861 blndhelmite in 362 bismuthinlte in 415 bornlte in «. 194 brochantite in 179 calamine in 878 cerargyrite in 278 cerusite in 364 chalcanthite in 178 chalcocite in 187 copper pitch ore in 186 corkite in 861 cosalite in 416-117 covelllte in 192 dolomite, secondary, in 496 goslarlte in 377 gypsum in 487 jarosite in 453 llnarite in 361 malachite in 180 native silver in 271 ore deposits in 229-231 plumbojarosite in 862 powellite in 425 secondary calcite in 494 sulphur in 486 wulfenlte in 425 wurtzlte in 380 San Jose, Cal., basic ferric sulphate at 454 San Jose, Mexico, copper deposits at 243-244 San Juan region, Colo., gold de- posits of 332-333 San Luis Obispo, Cal., chrome ore near 423 San Miguel County, Colo., vanadlnlte in 419 San Rafael, Mendoza, Argentina, vanadium in 418 San Rafael Swell, Utah, vanadium minerals in 421 Sandstone, chalcocite deposits In 189 Sankowsky, N., acknowledgment to. 91 Santa Rita Mountains, Ariz., molyb- denite in 426-427 Santa Rita district, N. Mex., cuprite in 184 molybdenite in 427 <K« tawra>Yt& in 221-223 526 INDEX. Page Silver City district, Idaho, position of argentite above dou- ble sulphosalts In 264 Silver City quadrangle, N. Mex., ore deposits in 221-222 Silver Cliff, Colo., annabergite at 465 cerargyrite at 273 octahodrlte at 472 Silver Islet, Ontario, Canada, anna- bergite on 465 erythrite on 470 nlccollte on 466 Silver Peak, Nev., gold deposits of 329 Silverbell district, Ariz., copper ore deposits In 228-229 fluorite in 602 Silverton, Colo., cosalite at 417 diaspore at 477-478 gold deposits near 332-333 siliceous cappings at 484 Simpson, John F., on the order of deposition of copper sulphides at Butte, Mont 205 Smaltlte, nature of 403 occurrence of 470 Sraithsonite, deposition of 875-376, 377 occurrence of 377-378 Snake Range, Nev., scheelite in 432 Snowstorm lode, Coeur d'Alene dis- trict, Idaho, copper ore of • 235-236 Socorro County, N. Mex., vanadlnlte In 419 Sodium, content of, in mine waters. _ 95-90 Solutions, cold, formation of deposits by 18-19 thermal, formation of deposits by :_ 18 Somers, II. E., on the formation of ore deposits In the Burro Mountain dis- trict. N. Mex 223 Sommerlad, nermann, synthesis of proustlte by 277 South Carolina, uranlnite In 430 South Lorraine district, Ontario, Canada, niccolite in 400 Spaces, open, in oxidized ore 71-72 Spain, vanadlnlte in 419 Speeularltc, occurrence of 213, 220 Spencer, A. C, acknowlegment to 20 experiments by, on deposition of copper sulphide 100-107 on copper deposits of Encamp- ment district, Wyo 230 on the ore deposits at Ely, Nev 219-221 Spha»rocobaltltc, occurrence of 409 Sphalerite, comparative action of sul- phuric acid on_< 151-152 covelllte formed from 192 influence of, on downward mi- gration of copper 175 on the precipitation ot cop- per sulphide - 10% V Sphalerite — Continued, covelllte — Continued. on vertical extent of sec- ondary zone 152-151 nature and relations of 873-374 occurrence of 880-381 with relation to chalcocite enrichment, recent gla- clatlon, presence of pyrrhotlte, and other features 848-850 oxidation of, in limestone 874-377 plate showing - 188 relative solubility of . 130 secondary, occurrence of — 881 Sphene. See Tltanlte. Springs, hot, metals and negative radicals in 83-86 Spurr, J. E., on, gold deposits at Monte Cristo, Wash 342 on gold deposits of Silver Peak, Nev 329 on ore deposits at Tonopah, Nev 802-308 on the results of oxidation at Tonopah, Nev 138-184 and Garrey, O. H., on copper deposits of the Velar- defia district, Mexico.. 244 on the gold deposits of Georgetown quadran- gle, Colo 381-332 Garrey, G. H.. and Ball, S. FT., on the silver-lead de- posits of the George- town district, Colo- 294-295 Stages of mineral formation, Walde- mar Llndgren on 218 Stalactites, formation of 494 Stannlte, occurrence of 402 secondary, possibility of 400,401 solubility of 399 Star district, Utah, corklte in 861 Steamboat Springs, Nev., cinnabar at 898 pyrlte formed by hot waters at. 455 stibnlte at 410 " Steel galena." occurrence of 367 Stephanlte, occurrence of 277 Stetefeldtlte, genesis of 280 Steward fissure system of Butte, Mont., features of 201 Stlblconlte, genesis and occurrence of__»_ 408,410 Stibnlte, genesis and occurrence of 410-411 nature of 404 reactivity of, with alkaline so- lutions 409 slight solubility of 409 Stillwater, Ok la., chalcocite near 189 Stockton district, Utah, plumbojaro- site in 362 Stokes, H. N., experiments by, on deposition of copper «&$&&* 166 528 INDEX. Tetrahcdrlte — Continued. Page. genesis and occurrence of 198, 278-280 Influence of, on downward mi- gration of copper 175 secondary, formation of, in the ' Coeur d'Alene district, Idaho 871 Tezada Island, British Columbia, bornite on 103-194 Texas, Pa., zaratlte at 464 Textures of secondary ores 71-80 Theory of enrichment, history of 12-14 outline of 11-12,14-15 Thunder Bay, Ont., Canada, with- erlte near 498 Tiemannite, nature of 898 Tiffin, Ohio, celestlte at 491 Tin, compounds of, genesis of 899 compounds of, solubilities of 398 permanence of 400,401 wood, nature and occurrence of 401-402 Tin minerals, chemical formulas of- 398 Tin-boron minerals, nature of 400 Tlneroo mineral field, Queensland, Australia, stannite in. 402 Tin tic district, Utah, aurichalcite in. 880 blsmuthlnlte in 415 brochantite in 178 calamine in 378 chrysocolla in 182,183 copper production of 280 enargite in 197,108 formation of carbonates and oxides in 370 geology of 285-286 gypsum in 487 hydrozincite in 379 Jarosite in 453 late deposition of quartz In 483 melaconlte in 185 minium in 350 monheimite in 378 native bismuth in 412 native copper In 177 ore deposits of 286-289 scorodite in 405 smithsonlte in 377 sulphur In 48G water level in 287 zinc deposits in 387-388 Tltnnite, occurrence of 472-473 Titanium minerals, chemical for- mulas of 471 nature of 471 occurrence of 471—473 Tltanomorphite, composition of 473 Tjim-Mujun Hill, Asiatic Russia, tyuyamunite in 435 Tombstone, Ariz., manganese dioxide at 442 manganese sulphide at 440 Tonopah, Nov.. analyses of ores from- 133 argentlte at 274 gypsum with altered ores at 487 lodyrltc at 21* Tonopah, Nev. — Con tinned. native silver at 272 pyrargyrlte at 275 results of oxidation at 133-134 siderite at 484 silver deposits at 802>303 depth of 265 Topography, ancient. Influence of 41-42 Transvaal, smaltlte in 470 Trees, fossil, carnotite in 434 Tres Hermanas, N. Mex., willemlte at 378 Triphylite, nature of 501 Trumbull, Conn., native bismuth at- 413 tungsten ores at 430-431 Tscheffkinlte, occurrence of 438 Tucson, Arts., wulfenite near 425 Tungsten, compounds of 427-429 TungBten minerals, chemical formu- las of 427 nature and occurrence of 427-432 Tungstite, genesis and occurrence of- 428, 429-430 Tunis, vanadinite in „ 410 Turgite, probable occurrence of 452 Turquoise, formation of 184 occurrence of 183-184 Tyrone, N. Mex., copper ore depos- its at 228 jarosite near 453 late deposition of quartz at 483 turquoise at 181 turquoise cut by sericite at 480 Tyson, J. W., acknowledgment to 240 Tyuyamunite, composition of 420 genesis and occurrence of 435 U. Ulmannite, occurrence of 465 Uluguru Mountains, German Rast Africa, uranlnlte In 436 Umpleby, J. B., on the gold deposits of the Glbbonsvllle dis- trict, Idaho 341-342 United Verde mine, Jerome, Ariz., ore bodies of 232-233 Uranlnlte, occurrence of 436-437 Uranium, compounds of 432-433 sulphate of, occurrence of 434-435 Uranium minerals, chemical formu- las of 432 genesis and occurrence of 433-437 solution of, in cold mineral waters 435 Uranophane, occurrence of 43« Utah Copper Co., production of 208 Uvanite, occurrence of .... 420 V. Vadose circulation, limit of 46-47 Van Hise, C. R., on the enrichment of ore deposits 14 and Leitb, C. K., on enrichment <A Vena <3eoosit8 451 530 INDEX. Page. Wisconsin, southwestern, zinc and lead deposits in 383-384 Wltherite, formation and occurrence of 498 Wolframite, genesis and occurrence of 428, 429, 480-431 Wolwuwe-St. Lambert, Belgium, as- bollte at 460 Wood River district. Idaho, cervan- tite in 410 siderlte in 454 Wright, C. W., and Paige, Sidney, on copper deposits of Kasaan Peninsula, Alaska 245-240 Wulfenite, occurrence of 424-425 Wurtzite, form of 373 occurrence of 380 plate showing 138 X. Xanthltane, occurrence of 473 Xenotime, nature and occurrence of- 501 T. Yauli, Peru, vanadium at 418 Yavapai County, Ariz., Jamesonlte In 366 stibnite in 410-411 vanadinite in 419 featman, Pope, on the ores of the Braden copper mines. 247-248 Yellow Pine district, Nev., angleslte in 363 calamine in 378 Yellow Pine district, chrysocolla in. 183 chrysocolla In 183 hydroslncite In 379 jarosite In 453 octahedrite in 472 plumbojarosite In 383 pyromorphite In 360 rutile In 472 line and lead ores In 390 Yellowstone National Park, Wyo., orplment In 408 Bcorodite In 405 Yerlngton, Nev., copper ore deposits at 2S1-233 covellite near 192 Z. Zaratlte, occurrence of 464 « Zeehan, Australia, stannite at 402 Zlmapan, Mexico, Jamesonlte near — 366 Zinc, content of. In mine waters 372 compounds of, solubilities of 372 deposits of, at Joplln, Mo 3S5 leaching of. In silver-lead de- posits 268-269 oxidized, disposition of 373-374 scattering of 70 secondary ores of, plate show- ing 1*8 structural features of 376-377 small replacement power of 140 Bee also Sphalerite. Zinc blende. See Sphalerite. Zinc minerals, chemical formulas of. 372 nature and relations of 373-374 Zincite, occurrence of 373 Zinnwald, Erxgebirge, stannite at 402 o ,". ; ■■>.( \ » > • J> ^^mmmmfmmm ^^i. 