 | | Report (issue) | | in the 19th Century; today, waste dumps at these mines pose relatively few problems because potentially...according to the geologic characteristics of the mines drained. In general, the trend of increasing metal...tables, which in turn control the extent to which mines or mineral deposits are exposed to significant ground...1994, Predicting water contamination from metal mines and mining waste: Notes, Workshop No. 2, International...may extend laterally for over 100 km. Individual mines within these zones often report reserves greater |  | Doebrich, Jeff L., Albino, G.V., Barker, C.E., Duffield, W.A., Dunn, V.C., Hanna, W.F., McFarlan, J.P., McGuire, D.J., Miller, M.S., Peters, S.G., Plouff, Donald, Raines, G.L., Sawatasky, D.L., Spanski, G.T. (1994) Resource assessment of the Bureau of Land Management's Winnemucca District and Surprise Resource Area, Northwest Nevada and Northeast California. Open-File Report Vol. 1994 (94-712) US Geological Survey doi:10.3133/ofr94712 | Report (issue) | | 'USGS, MS 176, Reno Field Office, Mackay School of Mines, University of Nevada, Reno, NV 89557-0047 2U.S...'Western Field Operations Center, U.S. Bureau of Mines, E. 360 Third Ave., Spokane, WA 99202 10USGS, MS...(USGS), in cooperation with the U.S. Bureau of Mines (USBM), is conducting a resource assessment of the...working with personnel of the Nevada Bureau of Mines and Geology who are currently reassessing geothermal...of Land Management (BLM) and the U.S. Bureau of Mines (USBM) to coordinate resource assessments and evaluations |  | Nokleberg, W.J., Bundtzen, T.K., Grybeck, D.J., Koch, R.D., Eremin, R.A., Rozenblum, I.S., Sidorov, A.A., Byalobzhesky, S.G., Sosunov, G.M., Shpikerman, V.I., Gorodinksy, M.E. (1993) Metallogenesis of mainland Alaska and the Russian Northeast. Open-File Report Vol. 1993 (93-339) US Geological Survey doi:10.3133/ofr93339 | Report (issue) | | rocks (Sado-type). Associated minerals include electrum, chalcopyrite, copper and silver sulfosalts, with...intrusions. The deposit minerals include native gold, electrum, pyrite, and sphalerite, sometimes with chalcopyrite...the sources of PGE minerals recovered in placer mines in Sheep Creek and Dime Creek, and in the Ungalik...Threeman. Many of these deposits were producing mines in the early part of the century. These and the...Bonanza, Jumbo, Erie, Mother Lode, and Green Butte mines. The deposits are localized in the lower, largely |  | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | Co, PGE Examples Sally Malay, Australia Rana, Norway References Thornett (1981) Boyd and Mathiesen...Pavlova and Rundquist, 1980 18 DEPOSIT TYPE Iron skara 2.5 SUBTYPE AUTHOR Dennis Cox DATE December...the more massive igneous or sedimentary rocks, skaras, and porphyry-type disseminated copper deposits...gold+electrum+pyrite+arsenopyrite+galena+sphalerite in high Au: Ag deposits. Native gold+electrum+tetrahedrite+pyrite+...Lake Counties, California: California Journal of Mines and Geology, v. 41, no. 2, p. 65-89. Bailey, Edgar |  | | Report (volume) | | of the supracrustal sequence at Ssesvatn, South Norway: Re-Os dating of Cu-Mo mineral occurrences 319...about the ages of mineral occurrences in southern Norway, which enable them to pinpoint the timing of deformation...sinistral shear/fault zone where many old gold mines are known. Detailed investigations on one major...SturguelChelopech Strip. Annuaire de I'Ecole Superior des Mines et Geologie (Year Book of the Higher Mining and...remarkable example is represented by the huge massive skaras found at the northern contact of the Santa Olalla |  | | Book | | period of 40 years on many field trips, visits to mines and expeditions in many parts of the world. Many...University (1954-55 and 1961-62), at the Ministry of Mines (Ethiopian Government) in the period 1956-61 and...copper-zinc mineralization in Trolldalen, Lofoten, N. Norway. Manecki (1965) presented electron-probe results...differentiation is presented by Carstens (1957) from Norway where three main types of gabbro are distinguished:...Carvalho (1969), describing the Gondomar Sb and Au mines near Oporto in the Douro River region of Portugal |
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