000 



/v *//*/ 



INDEX. 



Gold in sea beaches, 240. 

 Nova Scotia, 255. 

 Occurrence and ores, 200. 

 Oregon, 240. 

 Quartz veins, 248. 

 Southern States, 252. 

 Statistics, 256. 

 Washing-ton, 239. 



Gold Cup mine, Tin Cup, Colo., 211. 

 Gossan, 38. 

 Gothic, Colo., 211. 

 Gouge of clay in a vein, 37. 

 Graham Co., Ariz., 229. 

 Granby, Mo., zinc and lead mines 



near, 166-171. 



Grand Canon of the Colorado, 227. 

 Granite, Chaffee Co., Colo.. 212. 

 Granite Mountain mine, Butte, Mont., 



221. 



Granite veins with cassiterite, 60. 

 Grant Co., N. M., 203. 

 Grant Co., Ore., 240. 

 Great Basin, 3-7, 10. 

 In California, 241. 

 In Oregon, 239. 



Great Eastern mercury mine, 267. 

 Great Lakes, geology, 8, 9. 

 Great Valley, 8, 276. 

 Iron ores of, 79. 



Great Western mercury mine, 267. 

 Greeneyed Monster mine, Utah, 226. 

 Greenland cryolite, 258. 

 Green Mountain placers, 245. 

 Green River, Utah, 224. 

 Greisen with tin ores, 273. 

 Griffin, P. H., on bog ores of Quebec, 



279. 

 Grimm, J., scheme of classification 



of ore deposits, 50. 



Groddeck, A. v., scheme of classifica- 

 tion of ore deposits, 51. 

 Gulf region, geology, 9. 

 Gunnison Co. (Colo.) iron mines, 126. 

 Gunnison region, Colorado, 211. 

 Hade of a fault, 17. 

 Hag'ue, A., cited on Wyoming iron 



ore, 126. 



On Hamilton, Nev., 231. 

 Hague, A., and Iddings, J. P., on the 



Comstock Lode, 233, 236, 237. 

 Haile grold mine, South Carolina, 252. 

 Hall, C. E., cited on the iron mines of 



the Adirondacks, 122. 

 Hamilton, Nev., 231. 

 Hammondville (N. Y.) iron mines, 



122. 

 Hampton and Eureka copper mines, 



Arizona, 151. 

 Hancock, Mich., 139. 

 Hanging Rock region of Kentucky, 77. 



Hanging Rock region of limonite 



ores, 77. 



Spathic ores, 88. 

 Harrington, B. J., cited on the origin 



of magnetite, 130. 

 Hartman zinc mine, Pennsylvania, 



174. 



Hastings Co., Can., 260. 

 Haworth, E., cited on zinc and lead 



ores of southwestern Missouri, 



170. 



Hayes, C. W., illustration by. 18. 

 Hecla iron mine, Colorado, 126. 

 Hecla mines, Glendale, Mont., 191. 

 Hecla mines, Montana, 219. 

 Helena, Mont.. 221. 

 Hematites, red and specular, table of 



analyses. 118. 

 Henderson Lake, N. Y., titaniferous 



ores. 280. 



Henrich, C.,ci'ed on Aspen, Colo. ,189. 

 On Clifton (Ariz.) copper mines, 



146. 



On the Slayback lode, New Mexi- 

 co, 204. 



Henry Co., Va., magnetite, 125. 

 Hesse, Germany, bog ore, 75. 

 Hibernia iron mines, New Jersey, 124. 

 High or deep gravels, California, 245. 

 Hills, R. C., cited on the chemistry 



of replacement, 34. 

 On the Little Annie mine, Colo., 



212. 

 On the win systems of the San 



Juan, 206. 

 Zone of enrichment in the mines 



of the Summit district, Colo., 



39, 40. 



Hinsdale Co., 205. 

 Hoefer, H., cited on faults, 19. 

 Hogan Mountain, Mo., 116. 

 Homestake mine, Eagle Co., Colo., 



211. 



Honorine mine, Utah, 194. 

 Horizon defined, 5. 

 Horn Silver mine, Utah, 195. 

 Horses of barren rock in a vein, 36. 

 Hot Springs iron mines, Colorado,, 



126. 



Huerfano Co., Colo., 212. 

 Humboldt Co., Nev., 232. 



Antimony, 259. 

 Humboldt-Pocahontas mine, Custer 



Co., Colo., 213. 

 Humboldt range, Nev., 231. 

 Hunt, T. S., on Canadian titaniferous 



ores, 280. 



On the iron mines of the Adiron- 

 dacks, 122. 

 Hard iron mines, New Jersey, 124. 



