 | | Journal (article/letter/editorial) | | Ophiolite Copper Occurrence ERICH U. PETERSEN Department of Geological Sciences,The University of Michigan...College,Hanover, New Hampshire03755 Abstract The Oxec copperdepositof Upper Cretaceousage lies in the...serpentinitebody that makes up the Sierra de Santa Cruz, Guatemala. Recognitionof the ore host rocks as chloritized...sulfide depositis of the ophiolite copper type. In the mine vicinity, the ultramafic-maficassemblage consistsof...Comparisonwith ocean-floortholeiites indicatesthat the Oxec assemblageis strongly enriched in Na20 and H20, |  | | Report (issue) | | UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY U.S. GEOLOGICAL SURVEY-INGEOMINAS MINERAL...Norte Cty, CA Santa Helena, Antioquia, Colombia Goto Mine, Luzan, P.I. References Wells, F. G. et al 1946...Fe in the stringer zone. 17 Examples Ox.ec (Guatemala) Limi, (Cyprus), York Harbor, (Canada) Turner-Albright...millerite, freibergite, cobaltite, cassiterite, valleriite, and melnicovite Texture/Structure Finely crystalline...Regional Mn halos Examples References Sullivan mine, Canada Hamilton and others (1981) Sediment hosted |  | | Report (volume) | | West 920 Riverside Ave. WASHINGTON, D.C.--U.S. Department of the Interior Bldg., Rm. 2650, 1849 C St.,... U.S. GEOLOGICAL SURVEY BULLETIN 1693 U.S. DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR., Secretary...based on considerations that extend far beyond the mine itself, in some instances relating to the overall...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...useful sources for multiple deposit types (Canada Department of Energy, Mines and Resources, 1980; DeYoung |  | 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) | | UNITED STATES DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY RESOURCE ASSESSMENT OF THE BUREAU OF...Rock National Conservation Area), and the impact of mine dewatering on drainage basin groundwater resources...public lands from mineral entry, and the impact of mine dewatering on drainage basin groundwater resources...past decade has created concern about the impact of mine dewatering on groundwater resources in this region...resources for the entire state, as part of a Department of Energy supported program. The NBMG is willing |
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