 | | Journal (article/letter/editorial) | | 67, 1972, pp. 83-102 Manganite, Hausmannite, Braunite: Features, Modes of Origin D. F. HEWETT Abstract...writer hasgenerallyacceptedthe interpretationof the braunite,eachof whichhasbeenidentified widely original...Oklahoma;GrahamIsland,Brith ate, but less commonlyother oxides. Braunite is Columbia,Fig. 3, Table 1, DFH-277; and L• dearly...carbonate;rarely, it results from Table 1, DFH-169). In this mine, somelayers m chocolate-brown plumo• supergene alterationof...1, DFH-284. wMe. See sp•ctrographic Fro. 2. Black areas are aggregatesof small crystals • manganite |  | | Report (issue) | | [16] X-ray Powder Pattern: Franklin, New Jersey, USA. 3.66 (100), 7.25 (90), 3.58 (90), 2.436 (14), 3... 100.00 54.64 8.33 (1) Franklin, New Jersey, USA; FeO lost, estimated by di®erence. (2) Do. (3) Mn5...Jersey, USA); intimately intergrown with other manganese minerals (Olympic Peninsula, Washington, USA). Association:...willemite (Franklin, New Jersey, USA); hausmannite, jacobsite, braunite, alleghanyite, barite, grossular...Peninsula, Washington, USA); hausmannite, rhodochrosite, inesite (Hale Creek, California, USA). Distribution: |  | | Report (issue) | | Mn2+ Mn3+ 6 SiO12 Braunite c 2001 ° Mineral Data Publishing, version 1.2 Crystal Data: Tetragonal...Optical Properties: Opaque. Color: Dark, brownish black to steel-gray; in polished section, greyish white...white with a brownish tinge. Streak: Brownish black to steel-gray. Luster: Submetallic. Anisotropism: Weak... Marcel, Val d'Aosta. From Kacharwali, Nagpur district, Maharashtra, and Tirodi, Madhya Pradesh, India...around Kuruman, Cape Province, South Africa. In the USA, at the Spiller manganese mines, 25 km northeast |  | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA Peer Hen By CASTOR oan eGORY.C.oFER DOCK NEVADA AND BUREAU... UNIVERSITY Reno & Las Vegas OF NEVADA PRESS GEOLOGY Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs...otherwise noted Map of Mining Districts and significant mineral occurrences of Nevada by Nevada Bureau of Mines...Cataloging-in-Publication Data Castor, Stephen B, Minerals of Nevada / Stephen B. Castor and Gregory C. Ferdock.— Ist |  | | Book (volume) | | Most specimen collecting is done in the Lead-Zinc mining dists. of northwestern Illinois, the glacial drift...600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods |  | | Book (volume) | | Most specimen collecting is done in the Lead-Zinc mining dists. of northwestern Illinois, the glacial drift...600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods | | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA STEPHEN B. CASTOR and G R EGOR Y C . F E R D OC K l NEVADA BUREAU...association with the UNIVERSITY OF NEVADA PRESS Reno & Las Vegas Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright© 2004 by Uni versity of Nevada Press Photographs...Districts and si gnificant minernl occurrences of Nevada by Nevada Bureau of Mines and Geology All rights reserved...-Publ ication Dat,i Castor, Stephen B. Minerals of Nevada/ Stephen B. Castor and Gregory C. Ferdock.- rst |  | | Book (volume) | | the gem fields in the state, insomuch as both the Black Hills of South Dakota and the scenic Badlands thrust...chalcedony, jasper and gem petrified wood. BUFFALO COUNTY KEARNEY, area gravel bars and pits along the Platte...townagate, chalcedony, jasper, petrified wood. CASS COUNTY WEEPING WATER, SE, on rd. to Nehawka, in the Snyderville...chalcedony, jasper, fossils. CHERRY COUNTY VALENTINE, in the Sandhills county along the Niobrara R. and Minnechaduza...gem qualityagatized and opalized wood. DAWES COUNTY CHADRON, in N part of Co. and as far W as Crawford |  | 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) | | MANAGEMENT'S WINNEMUCCA DISTRICT AND SURPRISE RESOURCE AREA, NORTHWEST NEVADA AND NORTHEAST CALIFORNIA...Field Office, Mackay School of Mines, University of Nevada, Reno, NV 89557-0047 2U.S. Geological Survey, Unit...Winnemucca District and Surprise Resource Area, an area covering 13.5 million acres in northwest Nevada and...million acre High Rock/Black Rock National Conservation Area), and the impact of mine dewatering on drainage...part of their Resource Management Plan for the District/Resource Area or for other planning units such |  | Peters, S.G., Nash, J.T., John, D.A., Spanski, G.T., King, H.D., Connors, K.A., Moring, B.C., Doebrich, J.L., McGuire, D.J., Albino, G.V., Dunn, V.C., Theodore, T.G., Ludington, S.D. (1996) Metallic mineral resources in the U.S. Bureau of Land Management's Winnemucca District and Surprise Resource Area, northwest Nevada and northeast California. Open-File Report Vol. 1996 (96-712) US Geological Survey doi:10.3133/ofr96712 | Report (issue) | | Management's Winnemucca District and Surprise Resource Area, northwest Nevada and northeast California...Ludington3 Open-File Report 96-712 1996 1 Reno, Nevada 89557 2 Denver, Colorado 80228 3 Menlo Park, California...Canada 7 U.S. Bureau of Land Management, Winnemucca, Nevada 89445 This report is preliminary and has not been...Study Areas and other areas in the Winnemucca District and Surprise Resource Area for which resource...of mineral deposits present in the Winnemucca District and Surprise Resource Area, northwest Nev. and |  | 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) | | investigations of these rocks, with emphasis on the black shales, is highly recommended. 5) Aeromagnetic...complex mineralogy (such as the California-Vetas district) would be useful, not only for exploration in...in such areas may be appropriate. 12° SIERRA NEVADA DE SANTA MARTA Figure 1. Geologic provinces of...vertical uplift is post-middle Miocene. The Sierra Nevada de Santa Marta, a triangular-shaped fault-bounded...Juan-Atrato Basin), the Serrania de Perija and Sierra Nevada de Santa Marta (Cesar Basin), and along the Caribbean |  | | Book | | Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North...of commercial mining is also long, beginning with the Kenya opal mines of 4000 B.C. Mining began with gemstones...gemstones, instead of metallic ores, and mining for turquoise was enormously extended throughout the...had been sending great expeditions to prospect and mine for it throughout the Sinai Peninsula since at least...and abandoned, one is also sure to find extensive mine dumps sloping steeply down from the shaft or tunnel |  | | Report (volume) | | rock types 133 Cross section through the Kalavos district Cyprus showing relationship of massive sulfide...instances (such as titanium in a rutile-bearing black sand), the commodity might not even be concentrated...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...significant tasks. GRADE-TONNAGE MODELS Estimated pre-mining tonnages and grades from over 3,900 well-explored |
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