| | Report (issue) | and Ore Deposits of the Nova Lima and Rio Acima Quadrangles Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL...the Departamento N acional da Producao Mineral of Brazil under the auspices of the International Cooperation...and Ore Deposits of the Nova Lima and Rio Acima Quadrangles Minas Gerais, Brazil By JACOB E. GAIR GEOLOGY...GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-A...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation | | Vial, Diogenes Scipioni, DeWitt, Ed, Lobato, Lydia Maria, Thorman, Charles H. (2007) The geology of the Morro Velho gold deposit in the Archean Rio das Velhas greenstone belt, QuadrilĂĄtero FerrĂfero, Brazil. Ore Geology Reviews, 32 (3) 511-542 doi:10.1016/j.oregeorev.2004.12.008 | Journal (article/letter/editorial) | elsevier.com/locate/oregeorev The geology of the Morro Velho gold deposit in the Archean Rio das Velhas greenstone...greenstone belt, QuadrilĂĄtero FerrĂfero, Brazil Diogenes Scipioni Vial a,â, Ed DeWitt b , Lydia Maria...Doce-CVRD, BR 381, Km 459, Santa Luzia, MG, 33010-970, Brazil United States Geological Survey, Box 25046, Denver...Federal de Minas Gerais, Av. AntĂŽnio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil d CTGS...Abstract The Morro Velho gold deposit, QuadrilĂĄtero FerrĂfero region, Minas Gerais, Brazil, is hosted by | | | Journal (article/letter/editorial) | the QuadrilaĂtero FerrÔà fero region, Minas Gerais state, Brazil, one of the major gold provinces in the...intensely carbonatized rock (e.g., the giant Morro Velho mine with >450 t of contained gold). Metabasalts...Federal de Minas Gerais, Av. AntoĂnio Carlos 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901...31270-901, Brazil E-mail: lobato@igc.ufmg.br Fax: +55-31-4995410 L.C. Ribeiro-Rodrigues FAPEMIG Bursary Recipient...Escola de Minas, Universidade Federal de Ouro Preto, Morro do Cruzeiro, Ouro Preto, Minas Gerais, 35400-000 | | | Journal (article/letter/editorial) | pp. 775-798 GEOLOGY OF THE RAPOSOS GOLD MINE, MINAS GERAIS, BRAZ[I. GENE E. TOLBERT CONTENTS PAGE ............................................. Morro Velho zone ........................................sequence,which trends approximately east-west in the mine area, is intruded by diabase dikes that strike northeast... which is widely distributed in the Raposos-Morro Velho region and contains 0.31 percent Cr20 a. Arsenopyrite...depositsare similar to thoseat Morro Velho except that the hostrock at Morro Velho is a quartz-carbonate rock | | | Journal (article/letter/editorial) | CuiabĂĄ Gold deposit, QuadrilĂĄtero FerrĂfero, Minas Gerais, Brazil Luiz ClĂĄudio Ribeiro-Rodrigues a,â, Claudinei...Caratinga, BR-116, km 526, Caratinga-MG, 35 300-970, Brazil b Instituto de GeociĂȘncias, Universidade de BrasĂlia...BrasĂlia, Campus Asa Norte, BrasĂlia-DF, 31270-901, Brazil c Institute of Mineralogy and Economic Geology...northern part of the QuadrilĂĄtero FerrĂfero, Minas Gerais State, Brazil. The region constitutes an Archean graniteâgreenstone...by the Proterozoic supracrustal sequences of the Minas (<2.6â2.1 Ga) and Espinhaço (1.7 Ga) supergroups | | | Report (issue) | the Departmento National da Produ^ao Mineral of Brazil under the auspices of the Agency for International...Ferrifero, Minas Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRIFERO, MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation with the Departmento Nacional da Produqao...Produqao Mineral of Brazil under the auspices of the Agency for International Development of the United...Ferrifero, Minas Gerais, Brazil. (Regional geology of the Quadrilatero Ferrifero, Minas Gerais, Brazil) (Geological | | Pereira, InĂȘs, Storey, Craig, Darling, James, Lana, Cristiano, Alkmim, Ana R. (2019) Two billion years of evolution enclosed in hydrothermal rutile: Recycling of the SĂŁo Francisco Craton Crust and constraints on gold remobilisation processes. Gondwana Research, 68. 69-92 doi:10.1016/j.gr.2018.11.008 | Journal (article/letter/editorial) | Hampshire, United Kingdom 2 Ouro Preto, MG 35400000, Brazil MA Corresponding author: ines.pereira@port.ac...QuadrilĂĄtero FerrĂfero in the SĂŁo Francisco Craton, Brazil is known for its world-class PT E gold deposits...time (e.g. Witwatersrand, South Africa; Jacobina, Brazil; Huronian, Canada; Sierra Nevada, USA). In 2013...from the Paleoproterozoic Minas Supergroup, QuadrilĂĄtero FerrĂfero (QF), Brazil by using detrital rutiles...a Paleoproterozoic PT supracrustal sequence (Minas Supergroup), unconformably overlain by a Paleoproterozoic | | | Book (edition) | Utah 283 12 HYPOTHERMAL DEPOSITS 293 Morro Velho, Brazil 297 Broken Hill, New South Wales, Australia...MESOTHERMAL DEPOSITS 317 Coeur dâAlene, Idaho 319 Magma Mine, Arizona 325 Chuquicamata, Chile 333 14 EPITHERMAL... 453 Nickel Deposits of New Caledonia Morro da Mina, Brazil 470 Bauxite Deposits of Jamaica 472 466...Besides, what we are pleased to call the riches of a mine, are riches relatively to a distinction which nature...also advocated by Joseph Brunner (1801), a Bavarian mine official. Scipione Breislak (1811) an Italian geologist | | | Report (issue) | Horizonte, Ibirite, and Macacos Quadrangles Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-D...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation...Quadrangles Minas Gerais, Brazil By JOEL B. POMERENE GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-D Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation Administration | | Teixeira, JoĂŁo Batista GuimarĂŁes, de Souza, Jorge AndrĂ© Braz, da Silva, Maria da GlĂłria, Leite, Carlson Matos Maia, Barbosa, Johildo SalomĂŁo Figueiredo, Coelho, Carlos Eduardo Silva, Abram, Maisa Bastos, Filho, Valter MĂŽnaco Conceição, Iyer, Sundaram S.S. (2001) Gold mineralization in the Serra de Jacobina region, Bahia Brazil: tectonic framework and metallogenesis. Mineralium Deposita, 36 (3) 332-344 doi:10.1007/s001260100174 | Journal (article/letter/editorial) | mineralization in the Serra de Jacobina region, Bahia Brazil: tectonic framework and metallogenesis Received:...Serra de Jacobina region in Bahia, northeastern Brazil, occur in a belt of siliciclastic metasedimentary...UniversitaĂrio de Ondina, CEP 40170-290, Salvador, Bahia, Brazil E-mail: jbt@ufba.br M.B. Abram Companhia de Pesquisa...Administrativo da Bahia, CEP 41213-000, Salvador, Bahia, Brazil V.M.C. Filho Companhia Baiana de Pesquisa Mineral...Administrativo da Bahia, CEP 41750-300, Salvador, Bahia, Brazil S.S.S. Iyer Department of Physics and Astronomy | | | Journal (article/letter/editorial) | and occurrences of the CrixaĂs GoldÂźeld, central Brazil Received: 14 November 1999 / Accepted: 18 February...Gold production in the state of GoiaĂs, central Brazil, began in the 18th century, when the bandeirantes...bandeirantes (Portuguese Far West pioneers of colonial Brazil) recovered gold mostly from alluvial and, locally...BrasÔà lia, P.O. Box 04421, BrasÔà lia 70919-970, Brazil E-mail: hjost@tba.com.br did the region became...Grande S.A., a joint venture of MineracĂaĂo Morro Velho (Anglo-American) and INCO. At about the same | | | Report (issue) | Deposits of the Western Serra do Curral, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-G...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Curral, Minas Gerais, Brazil By GEORGE C. SIMMONS GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-G Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International Development | | | Report (issue) | Mineral Resources of the Congonhas District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 290...the Departamento N acional da Produfao Mineral of Brazil under the auspices of the International Cooperation...Mineral Resources of the Congonhas District Minas Gerais, Brazil By PHILIP W. GUILD GEOLOGICAL SURVEY ...Departamento N acional da Produ~ao M,ineral of Brazil under the auspices of the International Cooperation...__________________ _ Iron region of central Minas Gerais _______________ _ Congonhas district_ ________________________ | | | Report (issue) | BRECATN| GeLa TS! sreiersie cisisiatee s Morro Velho-Raposos Serramder Jacopina, ......)s:s.se...between galena sphalerite, Darwin Lead-Silver-Zinc mine, Inyo County, California, Econ. Geol., v. 66, p..., Bingham 1971, mining U. xiii S. study mine, of the '"'B" limestone Bingham mining The age...Finally, to that fine group of scientists and men, the mine geologists of the Americas, who have taken time...British White, D., 1968, 1961, 6, p. 39-50, 52 mine now in production: (particularly, of the Brenda | | | Journal (article/letter/editorial) | larger scalefrom the ore zone to the peripheryof the mine area. The intensityof alterationcanbe monitoredby...Presentaddress:Rio Doce Geol. Min., Rio de Janeiro,Brazil. ** Presentaddress:Department of GeologicalSciences...area wasthe scene son, 1948). The Kerr-Addison mine lies on the south limb of of the firstgoldrushin...batholiths occur along the peripheryof the synarea and mine is presented first. This study comclinorium, whereas...a major been describedby the geologicstaffof the mine in gold belt that spans'--400 km, from Val d'Or | | | Report (issue) | Landlocked Bay, the Gladhaugh mine at Ellamar, and the Big Bonanza mine on Latouche Island were staked...8 Bateman, A. M., Geology of the Beatson copper mine, Alaska: Econ. Geology, vol 19, pp. 338-368, 1924...calcite, sericite, chlorite, epidote, quartz, and leucoxene from that of the more basic varieties. Shearing...to the eye and is determined only by systematic mine sampling, for the quantity of the replacing sulphides...associated with chalcopyrite at Threeman Min- ing Co.'s mine on Landlocked Bay and elsewhere. Complex hydrous | | | Journal (issue) | reconstituted matrix. Purported locality: Minas Gerais, Brazil. The âmatrixâ around the crystals is crushed...crystals with lepidolite from Virgem da Lapa, Minas Gerais, Brazil. Two different fragments of topaz crysÂ...The whole operation can take place right at the mine. The glues used, to date, have been water-soluble...crystals from Casa de Pedras, Congonhas, Minas Gerais, Brazil have been glued onto matrix. The easiest...Brazilianite crystals from Conselheira Pena, Minas Gerais, Brazil, have been glued on matrix. In some cases | | | Book (edition) | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed...Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]âą6HzO...Harding Co .. South Dakota. and at the Fuemrole No2 mine, Emery co .. Utah. Also at Menzenschwand Scbwarzwald | | Aleinikoff, J. N., Hayes, T. S., Evans, K. V., Mazdab, F. K., Pillers, R. M., Fanning, C. M. (2012) SHRIMP U-Pb Ages of Xenotime and Monazite from the Spar Lake Red Bed-Associated Cu-Ag Deposit, Western Montana: Implications for Ore Genesis. Economic Geology, 107 (6) 1251-1274 doi:10.2113/econgeo.107.6.1251 | Journal (article/letter/editorial) | operated by Revett Minerals, Inc., as their Troy Mine. Spar Lake is one of more than 40 Cu-Ag deposits...McMechan and Price, 1982). 2. Near the Sullivan Mine, British Columbia, chloritegrade metamorphism is...Lower West, and Upper East, were developed after the mine opened in 1980 (Hayes and Einaudi, 1986). Additional...reflective (white and very pale gray) phases are leucoxene (finely porous), chalcopyrite, and galena. In...quartzites, in decreasing order of abundance, are leucoxene, apatite, tourmaline, and trace chromite, as well | | | Book | are: the tungsten ores of China; the quartz of Brazil; the diamonds of Africa; the gold of the Transvaal;...natural quartz, most of which is imported from Brazil. Synthetic minerals at times cost more than natural...of giant crystals reported are: 200-ton crystal; Brazil. Crystal 19 feet long and 5 feet in diameter; Black...000; Brazil. BERYI..: SPODUMENE: Crystal over 40 feet long; weight estimated at 90 tons; Etta Mine, Black...14 feet wide; weight approximately 90 tons; Lacy Mine, Ontario, Canada. QUARTZ: Milky white crystal; close | | | Book (volume) | and the corresponding citation (Hudson Bay 309 mine). in Ref. 4, line Z, for 670 read 676. 310 in...say that this guarantee did much to deterrepaid. mine the award of the grant. To Mr. W. 0. Wiley, Chairman...Societatis Scientiarum FenA: Vol. 1, 1927-date. Nova Series B: Finska Vetenskaps-Societeten, Helsingfors...Redogorelger och ForVol. 1-50, 1842-1926. nicae. Nova Series handlingar. Foldt. Kozl. Vol. 1, Foldtani... Bibliography 71 Ferraz (1929). Compendio dos Mineraes do Brazil en forma de Dicdonario, by 645 pp., Rio de Janeiro | | | Report (volume) | 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...government believed might someday be economic ta mine. Stratiform deposits of large areal extent, such...EXAMPLES High Plateau, Del Norte Cty, USCA Coto Mine, Luzon, PLPN (Wells and others, 1946) (LeBlanc...DEPOSITS Name Ace of Spades Adobe Canyon Gp. Ajax Alice Mine Allan (Johnson) Alta Hill Althouse Alyce and Blue | | | Journal (article/letter/editorial) | soon progressed to shallow depth, resulting in a mine. The numbers of mines and intensity of ACCEPTED...colonialism, modern economic booms (Belich, 2009). Active mine numbers and sizes skyrocketed during two World Wars...rapidly growing number of mineral discoveries and mine establishment was partly driven by the discovery...of conquests and non-military acquisitions. But mine importance and fame did not necessarily correspond...obsolete (for example, recent reserves of a mature mine only, or IP past production for a period of time) | | | Report (issue) | holdings. Prior to 1978, the development of complete mine property cost evaluations was impeded by still evolving...tool. Systems design work also continued on the mine simulation (MINSIM) program, an economic evaluation...reserves. These include implications that because a mine is operating it is profitable, that reported reserves...prices, which are variable over the life of the mine. Economic evaluation is complicated by the presence...and economic variables on viability of individual mine properties (17-18). Nonproducing deposits Producing | | | Book (edition) | Morocco; (center, left) wulfenite, San Francisco mine, Sonora, Mexico; (center) ameihyst, Veracruz, Mexico;...rnodochrosite, NâChwaning mine, South Africa; (lower left, center) wulfenite, Red Cloud mine, Arizona; (lower...Pe Wr * se vat © C6 tad GAa Snive Sr Certain Mine (ax agry wh Oe ee â SS 4 eae wid Bharce ©...ye ty a ara id (ean Âź â1 le hI AAP : oo A Mine seh Ranier âi i : lever vei ekealps ; cet ...coating fractures in sandstone at the Fuemrol No. 2 mine, Temple Mountain, Emery County, Utah; also sparsely |
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