 | | Journal (article/letter/editorial) | | Neoproterozoic Mara Rosa magmatic arc, central Brazil Claudinei G. de Oliveira *, Márcio M. Pimentel...Universidade de Brası́lia, Brası́lia-DF, 70910.900, Brazil Received 18 August 2003; accepted 24 April 2004...the Neoproterozoic Goiás Magmatic Arc, central Brazil, dates back to the beginning of the 1970s. The...eNd(T) values between + 3.0 and + 4.6. In the Chapada – Mara Rosa area, the supracrustal rocks form three...disseminated volcanogenic deposits, (ii) Cu – Au (e.g., Chapada) which has been interpreted either as volcanogenic |  | | Journal (article/letter/editorial) | | Southern Part of the Proterozoic Vazante Group, Brazil: Implications for Exploration of Sedimentary-Hosted...Southern Part of the Proterozoic Vazante Group, Brazil: Implications for Exploration of Sedimentary-Hosted...SOUTHERN PART OF THE PROTEROZOIC VAZANTE GROUP, BRAZIL: IMPLICATIONS FOR EXPLORATION OF SEDIMENTARY-HOSTED...throughout the evolution of the sedimentary basins. In Brazil, the main zinc deposits are hosted in the Proterozoic...sulfide deposits are the only active Pb-Zn mines in Brazil, operated by Votorantim Metais S.A. http://www |  | | 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 |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite...Landmann. CDD-549 Indexes for systematic catalog: 1. Brazil: Minerals and precious stones: Mineralogy and gemology |  | Bierlein, F. P., McKeag, S., Reynolds, N., Bargmann, C. J., Bullen, W., Murphy, F. C., Al-Athbah, H., Brauhart, C., Potma, W., Meffre, S., McKnight, S. (2016) The Jebel Ohier deposit—a newly discovered porphyry copper–gold system in the Neoproterozoic Arabian–Nubian Shield, Red Sea Hills, NE Sudan. Mineralium Deposita, 51 (6) 713-724 doi:10.1007/s00126-015-0630-z | Journal (article/letter/editorial) | | these instances is replaced by covellite and/or chalcocite (Fig. 4c). Gold has been observed (though exceedingly...empressite-hessite bornite supergene martite/ilmenite chalcocite covellite system at Jebel Ohier is interpreted...Quebec (Goodman et al. 2005), the Goiás Magmatic Arc in central Brazil (de Oliveira et al. 2015), and possibly...Buhn BM (2015) The Chapada Cu–Au deposit, Mara Rosa magmatic arc, central Brazil: constraints on the |  | | Journal (issue) | | NE of the Sandawana mine, along the Mweza Range, which is named 'Machingwe' mine, after a nearby stream...The Machingwe Emerald mine The car journey from Masvingo to the Mashingwe mine takes about 3l/z hours...for the mine became 'Machingwe Syndicate No. No.22 Mine', but is better known under the name Mine: Machingwe...Machingwe mine. At the time of the first author's visit to the mine -S striking, the No. No.11 shaft shaft...mining based on very simple methods at the time the mine was visited, but also the plant and the treatment |  | | Journal (issue) | | 0026-4628 'Continued on p. 415 Articles Diamonds in Brazil .................................................Moore Phosphate minerals from the Leveaniemi iron mine, Svappavaara, Sweden .............................Hollabaugh Laueite from Hagendorf-Siid andthe Palermo mine ................. 363 by L. C. Pitman New data...image of a crack hidden in the back (roof) of a mine adit (from A. P. Annan etal. (1988) Radar sounding...Universitaria, Ilha do Fundao 21.910 Rio de Janeiro, Brazil Since their discovery in Minas Gerais, near the |  | | Book | | On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALLEN, GEORGE B. --and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE...Allgood, C. Williams: Ramsdellite from the Mistake mine [Arizona] 14:333-335 ALLGOOD, ROBERT W. -with G...the Mistake mine [Arizona] 14:333-335 ALMA Famous mineral localities: the Home Sweet Home mine, [near Alma |  | | Report (issue) | | of copper may occur as bornite, enargite, and chalcocite. By-product minerals frequently include molybdenite...assemblage is pyrite + enargite + marcasite + chalcocite (Milu and others, 2004). In supergene enriched...enriched ores, a typical assemblage might be chalcocite + covellite ± bornite (Schwartz, 1966). In oxide ores...and chalcocite wherein digenite occurs as exsolution lamellae 8 in the bornite and chalcocite rims...replaced some early-stage bornite + digenite ± chalcocite. Cubanite has been reported from some porphyry |  | Wanhainen, C., Broman, C., Martinsson, O., Magnor, B. (2012) Modification of a Palaeoproterozoic porphyry-like system: Integration of structural, geochemical, petrographic, and fluid inclusion data from the Aitik Cu–Au–Ag deposit, northern Sweden. Ore Geology Reviews, 48. 306-331 doi:10.1016/j.oregeorev.2012.05.002 | Journal (article/letter/editorial) | | in northern Sweden is Sweden's largest sulphide mine with an annual production of 35 Mt of ore, and the...the 1930s, and a feasibility study for an open pit mine was conducted by Boliden AB in 1964. Production...Aitik Cu–Au–Ag deposit is Sweden's largest sulphide mine, one of Europe's largest producers of copper, gold...are pre-metamorphic and partly recrystallised. 6. Mine-scale structures The Aitik Cu–Au–Ag deposit is hosted...dominant directions of structures within the Aitik mine. (a) 213 foliation measurements. (b) 230 fault and |  | Kovacs, Nikolett, Allan, Murray M., Crowley, James L., Colpron, Maurice, Hart, Craig J.R., Zagorevski, Alex, Creaser, Robert A. (2020) Carmacks Copper Cu-Au-Ag Deposit: Mineralization and Postore Migmatization of a Stikine Arc Porphyry Copper System in Yukon, Canada. Economic Geology, 115 (7). 1413-1442 doi:10.5382/econgeo.4756 | Journal (article/letter/editorial) | | mineralization at the Carmacks Copper deposit, Minto mine, and Stu prospect (Fig. 2). Late Triassic to Early...pluton to the north, host of the Minto Cu-Ag-Au mine, by a veneer of the Carmacks Group. The Carmacks...(ca. 200–198 Ma) are also documented at the Minto mine (Hood, 2012; Sack et al., 2020), which is inferred...documented, though the assemblage molybdenite + chalcocite in the Cu-Mo-S system is stable at 800°C but...(Tonian; 870 Ma) Late Triassic (217-213 Ma) Chapada, Brazil Qz monzodiorite (1.88 Ga) intruding Bt-rich |  | | Catalog/List | | Maria do Jetiba, Espirito Santo, Southeast Region, Brazil Smokey scepter Quartz with extreme development...QUARTZ Diamantina, Minas Gerais, Southeast Region, Brazil Double-terminated, water clear Quartz crystal perched...PHANTOM Jequitaí, Minas Gerais, Southeast Region, Brazil Water clear Quartz prism with an exceptionally...PHANTOM Diamantina, Minas Gerais, Southeast Region, Brazil A single Quartz crystal with pyramidal phantom...$200-$250 53016 QUARTZ Var. DAUPHINE TWIN La Gardette Mine, Bourg d’Oisans, Isère, Rhône-Alpes, France Very |  | | Journal (issue) | | the quartzite rocks of Diamantina, Minas Gerais, Brazil ..………….……….………………… 16 Dumitru FRUNZESCU Miocene...associated with both the alteration of sulfide-bearing mine wastes and primary minerals. The minerals found...infrared (SWIR) spectral analysis at San Miguel mine environment, Iberian Pyrite Belt (SW Spain). Journal...environment, during the complex process of acid mine drainage. Thus, it is important to know the mineral...metals to the environment in the process of acid mine drainage. 9 References Anderson J. L., Peterson |  | | 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...g gold). ductile (e.g. copper). sectile (e.g. chalcocite). elastic Optical co11sta11ts ill reflected light...Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]•6HzO |  | | Journal (issue) | | & C. A. Francis P yrop h yllite from Ibitiara, Brazil .................................................emphasis or clarity, and (d) proper names, e.g., mine levels. 8. Credits. Caption data for specimen photos...the New Nevada mine in Batopilas, Chihuahua, Mexico and legrandite from the Ojuela mine in Mapimi, Durango...the Sar Francisco mine in Sonora, the Veracruz amethyst locality, and the sulfur mine in Baja. He was a...was in fact the general manager of the Robinson Mine at Kokomo, some 15 miles north of Leadville (and |  | | Book | | Geosciences Institute University of São Paulo São Paulo Brazil Pedro Oyhantçabal Departamento de Geodinámica Interna...recognized similarities in the ‘old granites’ of Brazil and southern Africa. On the other hand, du Toit...‘Brazilian system’ defined by Alcide d’Orbigny in Brazil (Beaumont 1844), arguably corresponding to the...geochronological data of the Precambrian basement of southern Brazil, Uruguay and Argentina were reported by Hart (1966)...and geochemical data of the Nico Pérez Terrane in Brazil and Uruguay in order to constrain its regional |  | | Journal (issue) | | Ti:lt·plm11<' iJt,.95.·16 • DIRECTEUR 28 LES VIÉ. Nive mine 33 ITINÉRAIRES MINÉRALOGIQUES AU BRÉSIL. par J...VIEILLES MINES BASQUES ONDAROLLES L'existence de cette mine semble avoir été mentionnée pour la première fois...cuivre ... ,. (3). En surface, à l'est-sud-est de la mine, de belles manifestations de fer, et beaucoup plus...d'une autre faille « sécante ». Carte Michelin La mine, disativn, ~-n territoire espagnol n'a j :mais f::iit...minéralisée, puisqu'elle conditionne la valeur de la mine (6). Les considérations qui vont suivre ne s'applique |  | | Book | | . . . . . . . . . . . . . . . . . . . . . . . Brazil . . . . . . . . . . . . . . . . . . . . . . . ......... . ..... . ........ . ................ . Brazil ...... . .... .... ............... .. ....... ...and quartz (black) which also replaces core. Bigay mine, Lachaux, Auvergne, France ( X 100) ( Geffroy and...; southern Norway; northern Karelia, U.S.S.R.; Brazil, in Minas Gerais at Brejauba and Engenho Central...arsenides and molybdenite; Bridge River, B.C.; Carrizal Alto, Chile ( pages 265- 267). 5. In several types of |  | | Book | | Campinas, UNICAMP, in Campinas, state of Säo Paulo, Brazil, between August and October 1991. The author sincerely...Brasileiro de Mineraçao in Belo Horizonte, for information on CVRD, iron ore in Brazil and the 'Iron Square in...Rondônia, who introduced me to the Amazon jungle of Brazil, to tin mining, and to the gold garimpos of Rondônia...nickel of Canada, the tin, iron and bauxite of Brazil, the tin of Bolivia, the lead, zinc and copper...Incas who introduced bronze.5 The famous cinnabar mine of Santa Barbara, near Huancavelica, Peru was, when |  | | Book | | sills), if they are exposed in outcrop or in the mine workings at all. The Climax Mo complex is the best...known (e.g. the Montana Tunnels deposit, Obelisk Mine). The former locality contains disseminated pyrite...numerous high-grade Cu-Ag veins, metal zoning, chalcocite supergene blankets and the overall richness....assemblage also rich in silver has mainly hypogene chalcocite and enargite, lesser tetrahedrite in quartz-pyrite...Cu-Mo mineralization intersected by "main stage" chalcocite and enargite veins. Butte Quartz Monzonite is |  | | Journal (article/letter/editorial) | | deposits of Idaho. TUNGSTEN MINERALIZATION AT THE IMA MINE, BLUE WING DISTRICT, LEMHI COUNTY, IDAHO ALFRED...ANDERSON Cornell University, Ithaca, New York The Ima mine, one of the leading producers of tungsten in the...belt. From 1940 to 1944 the Pinchi Lake mercury mine produced more than 4,000,000 pounds of mercury valued...more than $10,000,000. The Bralorne Takla mercury mine produced 130,000 pounds of mercury in 9 months of...concentrations of cinnabar. At the Pinchi Lake mercury mine the larger cinnabar bodies are in limestone overlain |  | | Book | | sills), if they are exposed in outcrop or in the mine workings at all. The Climax Mo complex is the best...known (e.g. the Montana Tunnels deposit, Obelisk Mine). The former locality contains disseminated pyrite...numerous high-grade Cu-Ag veins, metal zoning, chalcocite supergene blankets and the overall richness....assemblage also rich in silver has mainly hypogene chalcocite and enargite, lesser tetrahedrite in quartz-pyrite...Cu-Mo mineralization intersected by "main stage" chalcocite and enargite veins. Butte Quartz Monzonite is |  | | Book | | Universidade Federal de Pernambuco, C.P. 7852, Recife, Brazil HARTWIG E. FRIMMEL Geodynamics & Geomaterials...Universitário, Asa Norte, Brası́lia, DF 70910-900, Brazil (alva1@unb.br) M. Babinski Centro de Pesquisas...Rua do Lago 562, CEP 05508-080, São Paulo, SP, Brazil (babinski@usp.br) M.A.S. Basei Centro de Pesquisas...Rua do Lago 562, CEP 05508-080, São Paulo, SP, Brazil (baseimas@usp.br) G.H. Blanco Department of Geology...Paulo, Rua do Lago, 562, São Paulo, SP 05508-080, Brazil (boggiani@usp.br) J. Bossi Cátedra de Geologı́a |  | | Book | | 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...Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous...ilmenite crystals as described here for the Dodo mine. In general, ilmenite crystals from the Subpolar |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Connecticut. Luiz A. D. Menezes: Belo Horizonte, Minas Gerais, Brazil. William C. Metropolis: Mineralogical..., Washington, D.C. John J. Trelawney Esq.: Palo Alto, California. Rudy W. Tschernich: Snohomish, Washington...Brittle Gold, silver, copper Chlorargylite, chalcocite Tale Mica Characteristic of most minerals...Wokitecas eel TMPS Tia VER YUC ZAC States, Brazil Acre Alagoas Amapa Amazonas Bahia Ceara Para...Spotsylvania Co., and Partridge mine, Orange Co., VA, and at Dahlonega, GA; Homestake mine, Lawrence Co., SD; Silver |
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