 | | Report (issue) | | MINERAIS PROJECT REPORT Brazil Investigations (IR)BR-74 TUNGSTEN RESOURCES OF BRAZIL U. S. Geological Survey...standards or nomenclature 1974 TUNGSTEN RESOURCES OF BRAZIL By Max G. White CONTENTS Pages ABSTRACT .......tungsten in Brazil ........ 7 SCHEELITE DEPOSITS ...................... 7 Northeast Brazil. ..........Geologic setting of scheelite deposits ....... 7 Brejui Mine. .................... 10 Production, reserves...reserves, and resources potential .... 12 Rio Grande do Sul .................... 16 Location ........ |  | | Journal (article/letter/editorial) | | Min., Bol. 209, Rio de Janeiro 1964. DE MORAES, L.J.: Dep6sitos diamantlferos no norte do Estado de Minas...Bol. 8, Rio de Janeiro 1934. - - : Geologia Geral. - - Serv. Fore. Prod, Min., Bol. 19, Rio de ]aneiro...142, Rio de Janeiro 1968. PFLU~, R., SCHOBnENaAUS, C., & RENGES, F.: Contribuig~o ~ geotect6nica do Brasil...Bahia. - - Min. e Met,, 15, Rio de Janeiro 1951. SCHOgZENHAUS, C.: Sure,rio da geologia da Quadrieula Ibitiara...Ibitiara, Bahia, Sure,rio da geologia da Quadrieula de Paramirim, Bahia. - - SUDENE, Div. Geol., Bol |  | | Journal (issue) | | rubis sur gangue, etc ... De 100 g à 10 kg pièce. Grande variété de pierres taillées, précieuses et semi-précieuses...Ti:lt·plm11<' iJt,.95.·16 • DIRECTEUR 28 LES VIÉ. Nive mine 33 ITINÉRAIRES MINÉRALOGIQUES AU BRÉSIL. par J...J. et J. CASSEDANNE. Les environs de Currais Novos, différents gisements facilement accessibles et riches...récente, ce japse devient déjà rare. Il présente une grande variété de couleurs : vert, rouge, ocre, brun et...est naturellement fonction de la plus ou moins grande rareté de la pierre brute, mais avant tout de la |  | | Journal (article/letter/editorial) | | com/loi/tigr20 Geology and Mineral Resources of Brazil: A Review a a Inacio De Medeiros Delgado , Augusto...Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil b US. Geological Survey, Denver, CO, 80225 Version...Thorman (1994): Geology and Mineral Resources of Brazil: A Review, International Geology Review, 36:6,...rights reserved. Geology and Mineral Resources of Brazil: A Review INACIO DE MEDEIROS DELGADO, AUGUSTO J...Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil AND CHARLES H. THORMAN US. Geological Survey, Denver |  | | Journal (article/letter/editorial) | | Brodtkorb et al. 1977; Delakowitz 1987; Hack 1987; NE Brazil, Beurlen et al. 1982; Busch 1981; Reid 1983; Bro-...different lithological-stratigraphical complexes; gneiss and amphibolite-dominated units at the base grade...dolomite, calcite and quartz. Since these rocks normally do not contain scheelite they are not considered further...ments into the scheelite lattice; all other elements do not show statistically significant correlation with...Hirschegg/Stubalpe. A garnet mica schist; B hornblende-bearing gneiss; C tourmalinite; D calc-silicate rock; E calcite |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Crystal of multicolored tourmaline (84 x 26 mm), Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais...(Camara Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo...pedras preciosas do Brasil Bibliography 1. Gemology 2. Geology 3. Minerals - Brazil 4. Minerals- Classification... Mineralogy 6. Mineralogy - Brazil - History 7. Precious stones - Brazil I. Bartorelli, Andrea. II. Title |  | Amstutz, G. C., Goresy, A. El, Frenzel, G., Kluth, C., Moh, G., Wauschkuhn, A., Zimmermann, R.A. - Eds. (1982) Ore Genesis. Springer Berlin, Heidelberg. doi:10.1007/978-3-642-68344-2 | Book | | block I experienced recently when visiting a gold mine in virtually unmetamorphosed ground. A fault cuts..."common sense" observations described from the gold mine with the chert and the organic matter. Another potent...Alterations of Conglomeratic Uranium Ores, Pronto Mine, Ontario, Canada E.Wm. Heinrich (With 1 Figure)...Observations on Ore Rhythmites of the Trzebionka Mine, Upper Silesian-Cracow Region, Poland L. Fontbote...the Cobaltite-Gersdorffite Series from the Raipas Mine, Finnmark, Norway F.M. Vokes and G.S. Strand (With |  | 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) | | deposits of such minerals in adjacent areas of Brazil and Venezuela suggest that eastern Colombia may...deposits, based on analogy with adjacent areas in Brazil and Venezuela. An initial reconnaissance should...Cretaceous and early Tertiary age Rio Suclo; East tributaries of Rio Atrato and Rio San Juan Accreted Island...anomalies Indicate shallow basement near headwater of Rio San Juan Terrane: Domain #3. CORDILLERA OCCIDENTAL...(2.1) Ac and i, Pantanos, Piedrancha, Andagueda, Rio Blanco, La Verde, Ramos Tertiary felsic Intrusive |  | | Report (volume) | | based on considerations that extend far beyond the mine itself, in some instances relating to the overall...another. This goal is difficult to attain, because we do not always know which features are site specific...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...Valley type is the presence of secondary dolomite. But do we know that this is essential? Suppose a deposit...figures; nevertheless, the grade-tonnage figures given do represent material that the company or the government |  | | Report (issue) | | carbon, petroleo y gas con extension mucho mas grande (y de mas importancia economica). Esta obra varfa...una ocurrencia mineral de tamaflo suficientemente grande y de ley tan alta que, bajo las circunstancias...de los modelos representan los atributos de un grande numero de yacimientos y los nombres son solamente...secundarios) se presentan como cero. For razon del tamafio grande de la base de datos no se presentan referencias...U.S. Geological Survey mantiene disponible una grande cantidad de datos en los archives del Hineral Resources |  | | Book | | incompletely characterized hydromicas-these nebulous species do not form visible crystals and in themselves are never...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...in 2002 in a calcite-carbonatite vein intruding gneiss, together with very large Baveno-law-twinned crystals...Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals |  | | Report (issue) | | Afghanistan _______________________________ _ 215 Brazil ____________________________________ _ 215 Chile...06 ppm), and chlorine ( 0.04 percent). Gold Acres mine, Nevada.-T. J. Armbrustmacher found anomalously...several metals in rocks from the Gold Acres open-pit mine, Lander County, north-central Nevada. Titanium,...inclusions, and local variations of elements within the mine, suggest the imprint of at least two sequences of...below the top of the ore zone at the Carlin gold mine, Eureka County, Nev., by T. E. Mullens and J. F |  | | Report (issue) | | Summary by countries. ________________-_-_----Brazil--.-.---.. -__---._------------------CENTO _ -_...of 8 to 10 sq mi in the vicinity of the King Tut mine. The gold content of these arroyo gravels is highly...The COLORADO prospect and the Karla Kay uranium mine, 2 miles west-northwest, appear to lie on the same...and T. J. Armbrustmacher show that the open-pit mine at Gold Acres, Lander County (loc. 4) ? li®8 in...mapping by A. S. Eadtke in and around the Carlin gold mine in Eureka County (loc. 8) , shows that the gold |  | | Book | | pegmatite with the gneiss and the boron was a lateral derivative from the gneiss-schist, an exudation...interrelationships, it is no surprise that these metallic elements do occur as ore concentrations in the mantle and its...solvent and the solute are of nearly the same size, do not form intermediate compounds and have the same...abundant in arsenopyriterich samples from Wongabah Mine, characteristically forming aggregates of fibrous...However, limonite can replace a number of minerals that do not necessarily contain iron. Fig. 225 shows native |
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