 | Cabral, A. R., Lehmann, B., Kwitko-Ribeiro, R., Jones, R. D., Rocha Filho, O. G. (2003) ON THE ASSOCIATION OF PALLADIUM-BEARING GOLD, HEMATITE AND GYPSUM IN AN OURO PRETO NUGGET. The Canadian Mineralogist, 41 (2) 473-478 doi:10.2113/gscanmin.41.2.473 | Journal (article/letter/editorial) | | ASSOCIATION OF PALLADIUM-BEARING GOLD, HEMATITE AND GYPSUM IN AN OURO PRETO NUGGET ALEXANDRE RAPHAEL CABRAL§...Clausthal-Zellerfeld, Germany ROGERIO KWITKO-RIBEIRO§ Centro de Desenvolvimento Mineral, Companhia Vale do Rio Doce...296, Caixa Postal 09, 33030-970 Santa Luzia – MG, Brazil RICHARD D. JONES 1636 East Skyline Drive, Tucson...Mina do Gongo Soco, Companhia Vale do Rio Doce, Fazenda Gongo Soco, Caixa Postal 22, 35970-000 Barão de Cocais...Cocais – MG, Brazil ABSTRACT An ouro preto (black gold) nugget from Gongo Soco, Minas Gerais, Brazil |  | | Journal (article/letter/editorial) | | 63, Buea, South West Province, Cameroon c Centro de Desenvolvimento Mineral, Companhia Vale do Rio Doce...Santa Luzia-MG, Brazil Mina do Gongo Soco, Companhia Vale do Rio Doce, Fazenda Gongo Soco, Caixa Postal...Postal 22, 35970-000 Barão de Cocais-MG, Brazil b d Received 9 September 2005; accepted 6 March 2006 Available...(jacutinga) at Gongo Soco, an iron ore deposit in the Quadrilátero Ferrífero of Minas Gerais, Brazil, have inclusions...Gold nuggets; Ouro preto; Gongo Soco; Quadrilátero Ferrífero; Minas Gerais; Brazil 1. Introduction Among |  | Cabral, A. R., Lehmann, B., Galbiatti, H. F., Rocha Filho, O. G. (2006) Evidence for metre-scale variations in hematite composition within the Palaeoproterozoic Itabira Iron Formation, Minas Gerais, Brazil. Mineralogical Magazine, 70 (5) 591-602 doi:10.1180/0026461067050352 | Journal (article/letter/editorial) | | Palaeoproterozoic Itabira Iron Formation, Minas Gerais, Brazil A. R. CABRAL1,*, B. LEHMANN2, H. F. GALBIATTI3...MG, 35900-900, Brazil 4 Companhia Vale do Rio Doce, Fazenda Gongo Soco, Barão de Cocais MG, 35970-000...35970-000, Brazil 2 ABSTR ACT Hematite is a mineral the chemical composition of which rarely differs significantly...and Gongo Soco, in the Palaeoproterozoic Itabira Iron Formation, Quadrilátero Ferrı́fero of Minas Gerais...Gerais, Brazil, has revealed distinct variations in chemical composition with respect to Ti and Cr. Hematite |  | | Journal (article/letter/editorial) | | OF “NATIVE PALLADIUM” FROM MINAS GERAIS, BRAZIL: EVIDENCE FROM GONGO SOCO ALEXANDRE RAPHAEL CABRAL Rua...32/704, 22231–110 Rio de Janeiro, RJ, Brazil ROGERIO KWITKO-RIBEIRO Centro de Desenvolvimento Mineral...296, Caixa Postal 09, 33030–970 Santa Luzia, MG, Brazil ABSTRACT Minute rosette-like crystals (~1 m)...of a gold nugget from Gongo Soco, an iron ore deposit in Minas Gerais, Brazil. The rosettes consist essentially...oxygen-bearing palladium, gold nugget, Gongo Soco, Minas Gerais, Brazil. SOMMAIRE De très petits cristaux (~1 m) |  | Lüders, Volker, Romer, Rolf L., Cabral, Alexandre R., Schmidt, Christian, Banks, David A., Schneider, Jens (2005) Genesis of itabirite-hosted Au–Pd–Pt-bearing hematite-(quartz) veins, Quadrilátero Ferrífero, Minas Gerais, Brazil: constraints from fluid inclusion infrared microthermometry, bulk crush-leach analysis and U–Pb systematics. Mineralium Deposita, 40 (3) 289-306 doi:10.1007/s00126-005-0024-8 | Journal (article/letter/editorial) | | hematite-(quartz) veins, Quadrilátero Ferrı́fero, Minas Gerais, Brazil: constraints from fluid inclusion infrared...Au–Pd–Pt Æ Minas Gerais Introduction Present address: A. R. Cabral Département de géologie et de génie...occurrences of economic importance seem to be known from Brazil 290 only. During the Brazilian Gold Cycle (1695–1785)...from the area around the city of Ouro Preto (Minas Gerais) presumably came from palladian gold mineralization...Pelada in the Carajás mineral province, northern Brazil, focused again on this type of mineralization (e |  | Cabral, A. R., Lehmann, B., Grambole, D., Herrmann, F. (2004) HYDROGEN IN A NATURAL Pd O COMPOUND FROM GONGO SOCO, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 42 (2) 689-694 doi:10.2113/gscanmin.42.2.689 | Journal (article/letter/editorial) | | HYDROGEN IN A NATURAL Pd–O COMPOUND FROM GONGO SOCO, MINAS GERAIS, BRAZIL ALEXANDRE RAPHAEL CABRAL§ AND BERND...encrustation of an ouro preto nugget of Gongo Soco, Minas Gerais, Brazil, is confirmed by elastic recoil detection...Pd–O-bearing compound, ouro preto nugget, Gongo Soco, Minas Gerais, Brazil. SOMMAIRE L’existence d’hydrogène...oxydes de fer la patine sombre caractéristique d’une pépite de ouro preto prélevée à Gongo Soco, Minas...Minas Gerais, Brazil, est confirmée par une analyse par détection du recul élastique avec un micro-faisceau |  | | Journal (article/letter/editorial) | | platinum from ouro preto-bearing mineralisation in Brazil Alexandre Raphael Cabral a,b,⁎, Bernd Lehmann a...rushes in Brazil (Minas Gerais and Serra Pelada). The auriferous mineralisations of Gongo Soco and Itabira...Itabira, Minas Gerais, and Serra Pelada, Pará, have Pd–O-bearing, dark-coloured ferruginous coatings on...empirical Pd5(Hg,Sb,Ag)2Se6 and (Pd,Sb,Ag,Hg)5Se4, at Gongo Soco; palladseite, ideally Pd17Se15, and sudovikovite...minerals; Ouro preto; Gongo Soco; Itabira; Serra Pelada; Brazil 1. Introduction Brazil had two major gold |  | Cabral, Alexandre Raphael, Wiedenbeck, Michael, Rios, Francisco Javier, Seabra Gomes, Antônio Augusto, Rocha Filho, Orlando Garcia, Jones, Richard David (2012) Talc mineralisation associated with soft hematite ore, Gongo Soco deposit, Minas Gerais, Brazil: petrography, mineral chemistry and boron-isotope composition of tourmaline. Mineralium Deposita, 47 (4) 411-424 doi:10.1007/s00126-011-0374-3 | Journal (article/letter/editorial) | | associated with soft hematite ore, Gongo Soco deposit, Minas Gerais, Brazil: petrography, mineral chemistry...dolomitic itabirite at Gongo Soco, Quadrilátero Ferrífero of Minas Gerais, Brazil. The hematite–talc schist...Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN), 30123-970, Belo Horizonte-MG, Brazil A. A...Gomes Jr Gerência de Exploração Mineral de Ferrosos (GAEMF), Centro Tecnológico de Ferrosos–Miguelão...Fazenda Rio do Peixe, Galpão de Testemunhos, 34000-000, Nova Lima-MG, Brazil O. G. Rocha Filho Rua Ceará |  | Cabral, A. R., Lehmann, B., Tupinamba, M., Schlosser, S., Kwitko-Ribeiro, R., de Abreu, F. R. (2009) THE PLATINIFEROUS Au-Pd BELT OF MINAS GERAIS, BRAZIL, AND GENESIS OF ITS BOTRYOIDAL Pt-Pd AGGREGATES. Economic Geology, 104 (8) 1265-1276 doi:10.2113/gsecongeo.104.8.1265 | Journal (article/letter/editorial) | | COMMUNICATIONS THE PLATINIFEROUS Au-Pd BELT OF MINAS GERAIS, BRAZIL, AND GENESIS OF ITS BOTRYOIDAL Pt-Pd AGGREGATES...SCHLOSSER,4 ROGERIO KWITKO-RIBEIRO,5 AND FRANCISCO R. DE ABREU6 1 Department 2 Mineral of Geology: Exploration... Research Group, Faculdade de Geologia, Universidade do Estado do Rio de Janeiro, Rua S. Francisco Xavier...Janeiro-RJ, Brazil 4 Curt-Engelhorn-Zentrum 5 Centro Archäometrie, D6, 3, D-68159 Mannheim, Germany de Desenvolvimento...Luzia-MG, Brazil 6 Votorantim Metais, Praça Ramos de Azevedo 206, 01037-010 São Paulo-SP, Brazil Abstract |  | Cabral, A. R., Beaudoin, G., Kwitko-Ribeiro, R., Lehmann, B., Polonia, J. C., Choquette, M. (2006) PLATINUM PALLADIUM NUGGETS AND MERCURY-RICH PALLADIFEROUS PLATINUM FROM SERRO, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 44 (2) 385-397 doi:10.2113/gscanmin.44.2.385 | Journal (article/letter/editorial) | | FROM SERRO, MINAS GERAIS, BRAZIL Alexandre Raphael CABRAL§ and Georges BEAUDOIN Département de géologie...géologie et de génie géologique, Université Laval, Pavillon Adrien-Pouliot, Québec, QC G1K 7P4, Canada Rogerio...Rogerio KWITKO-RIBEIRO Centro de Desenvolvimento Mineral, Companhia Vale do Rio Doce, Rodovia BR 262/km 296...296, Caixa Postal 09, 33030-970 Santa Luzia – MG, Brazil Bernd LEHMANN Institut für Mineralogie und Mineralische... 34800-000, Caeté – MG, Brazil Marc CHOQUETTE Département de géologie et de génie géologique, Université |  | Palyanova, Galina, Kutyrev, Anton, Beliaeva, Tatiana, Shilovskikh, Vladimir, Zhegunov, Pavel, Zhitova, Elena, Seryotkin, Yurii (2023) Pd,Hg-Rich Gold and Compounds of the Au-Pd-Hg System at the Itchayvayam Mafic-Ultramafic Complex (Kamchatka, Russia) and Other Localities. Minerals, 13 (4) 549 doi:10.3390/min13040549 | Journal (article/letter/editorial) | | the amount of this phase in the grains Espinhaco, Brazil [38,39] as “poorly crystalline” phases. was 10%–40%...River Dart (England) [20], and Corrego Bom Sucesso (Brazil) [38,39] (Table A2). Pd,Hg-poor gold is more common...[57,58] and depositions Serra Pelada and Gongo Soco (Brazil) [40,59,60] and alluvial placers Mayt and...Similkameen River (Canada) [64]; Corrego Bom Sucesso (Brazil) [38,39]. The minor impurity Ag or (and) Cu is...example, gold content in potarite from the Minas Gerais, Brazil (Fleet et al. 2002 [34], Table 1. (p. 344)) |  | | Journal (article/letter/editorial) | | blackish crusts (`ouro preto') was mined in Minas Gerais, Brazil, which only much later were identi®ed as... PD OXIDES IN MERTIEITE mine, QuadrilaÂtero Ferrifero, Minas Gerais, Brazil. The PGE-O-bearing phases...stoichiometric bulk ratios of metals to oxygen gypsum in an nugget. which ranges from 6 to 1. The individual...resolution of the electron compound from Gongo Soco, Minas Gerais, Brazil. microprobe. , , 689ÿ694. Transactions...Palladium arsenide-antimonides from Itabira, Minas Gerais, Brazil. , , 528ÿ543. Garuti, G. and Zaccarini, |  | Vial, D.S., Abreu, G.C., Schubert, G., Ribeiro-Rodrigues, L.C. (2007) Smaller gold deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil. Ore Geology Reviews, 32 (3) 651-673 doi:10.1016/j.oregeorev.2005.01.004 | Journal (article/letter/editorial) | | Velhas greenstone belt, Quadrilátero Ferrífero, Brazil D.S. Vial a,⁎, G.C. Abreu b , G. Schubert a , L...Santa Luzia, MG, Brazil Instituto de Geociências da Universidade de São Paulo/Fundação de Amparo à Pesquisa...do Estado de São Paulo, Rua Major Solbiat, 226, Torrinha, SP, Brazil Fundação Educacional de Caratinga...BR-116, Km 526, Bairro das Graças, Caratinga, MG, Brazil b c Received 26 June 2003; accepted 2 January...Brumal, Boa Vista, Fernandes, Moita, Roça Grande, Bico de Pedra and Pari, as well as the world-class deposits |  | Mota-E-Silva, Jonas, Prichard, Hazel M., Suárez, Saioa, Ferreira Filho, Cesar F., Fisher, Peter C. (2016) Supergene Alteration of Platinum-Group Minerals and the Formation of Pd-Cu-O and Pd-I-O Compounds In the Limoeiro Ni-Cu-(PGE) Deposit, Brazil. The Canadian Mineralogist, 54 (3) 755-778 doi:10.3749/canmin.1500049 | Journal (article/letter/editorial) | | COMPOUNDS IN THE LIMOEIRO Ni-Cu-(PGE) DEPOSIT, BRAZIL JONAS MOTA-E-SILVA Votorantim Metais, Exploration...05423-180, Brazil University of Brasilia, Geosciences Institute, Brası́lia/DF, 70900-970, Brazil HAZEL M...Geosciences Institute, Brası́lia/DF, 70900-970, Brazil PETER C. FISHER School of Earth and Ocean Science...Limoeiro Ni-Cu(-PGE) sulfide deposit in northeastern Brazil was discovered in 2009 by geologists working for...SCC, São Francisco/Congo; WA, West Africa; RP, Rio de La Plata; SA, Sahara; and K, Kalahari. Provinces |  | El Ghorfi, Mustapha, Oberthür, Thomas, Melcher, Frank, Lüders, Volker, El Boukhari, Abdelmajid, Maacha, Lhou, Ziadi, Rachid, Baoutoul, Hssain (2006) Gold–palladium mineralization at Bleïda Far West, Bou Azzer–El Graara Inlier, Anti-Atlas, Morocco. Mineralium Deposita, 41 (6) 549-564 doi:10.1007/s00126-006-0077-3 | Journal (article/letter/editorial) | | Common to all Au–Pd mineralizations worldwide (Brazil, Australia, UK), including Bleïda Far West, is...mineralization some 7 km NW of the former Bleïda copper mine. Managem, a subsidiary of the ONA group, intends...have been discovered so far (Fig. 3): (1) the zone de brèche (ZB), (2) the zone centrale (ZC), and (3)...irregular orebodies, and gold grades in the zone de brèche, is shown in Fig. 4. Drilling is still in...mineralization and the major ore zones (ZB = zone de brèche, ZC = zone centrale, ZI = zone intermediaire) |  | | Book | | CENTRO DE ESTUDOS E - Chairman : Luiz Vergara Vice-chairman : Arno Konder Se cre t a ry: Nelson...Nelson De Vicenzi • Tre a-s u r e r s : Alberto de Andrade Oueiroz I Mauricio Wellisch Editorial committee...Leao Research committee Jose de Oueiroz Lima Amerine W anick Aurino de Moraes Technical adviser Nelson...PRESIDENTE WILSON, 231 - RIO DE JANEIRO MINES AND MINERALS IN BRAZIL --= ··--· ··- ·-·=- MINES...MINERALS IN BRAZIL J OSIAS LEAO (ECONOMIC DIVISION - MINISTRY OF FOREIGN AFFAIRS) CENTRO DE ESTUDOS ECONOMICOS |  | | Journal (volume) | | their walls, it is disseminated through (the Manto de Ossa) certain upper layers of the first limestone...passing from the cellular limestone of the Manto de Ossa into the compact rock beneath, the lodes-diverging...vein-stones. The ignorance and prejudice of the native mine-owner prohibits use of the wheel-barrow, the windlass...wrought to advantage, now remains unbroken in the mine, and undressed at the surface. All necessaries of...seldom passed without an earthquake. 154-167 . BRAZIL. MINAS GERAES. The richest part of this productive |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais. Collection of Alvaro Lucio. Photograph taken...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 |  | Grammatikopoulos, T. A., Kapsiotis, A., Tsikouras, B., Hatzipanagiotou, K., Zaccarini, F., Garuti, G. (2011) SPINEL COMPOSITION, PGE GEOCHEMISTRY AND MINERALOGY OF THE CHROMITITES FROM THE VOURINOS OPHIOLITE COMPLEX, NORTHWESTERN GREECE. The Canadian Mineralogist, 49 (6) 1571-1598 doi:10.3749/canmin.49.6.1571 | Journal (article/letter/editorial) | | ophiolitique de Vourinos, dans le nord-ouest de la Grèce, renferme de nombreux gisements de spinelle chromifère...chromitites des points de vues de la composition du spinelle chromifère et de l’olivine, et de la distribution...d’amphibole pargasitique. La composition de la magnésiochromite varie de façon importante seulement dans la...nord du Vourinos (Cr#: 0.75–0.83). Les valeurs de Mg# et de Ni du noyau des grains d’olivine dans la partie...roches du manteau. Les teneurs en EGP des chromitites de la partie sud § E-mail address: tassos.grammatikopoulos@sgs |  | | Report (volume) | | ________ 1 1 2 2 3 3 3 5 5 6 6 6 8 8 8 8 9 9 Brazil ----------------------------------------------------------------...Bol. Geol.; Publicaci6n Especial No.5 Ministerio de Minas e Hidrocarburos, Caracas 1972. Also in University...the USGS, 1970-71: Antarctic Jour. U.S., November/De,cember 1971. 73. Southard, R. B., Jr., 1972, Topographic...C. K., 1968, Isotope hydrology ofthe artesian BRAZIL 9 Ref. No. aquifers of the Styrian Basin, Austria:...Ernest, 1969, Un torrente de barro de gran volumen, post-glacial en el Valle de Ia Paz, Bolivia: Geol. Soc |  | | Journal (article/letter/editorial) | | Platreef and calc-silicate footwall at Sandsloot mine, Potgietersrus district, South Africa P. E. B. Armitage...present study is based on fieldwork at the Sandsloot mine, an open-pit operated by Anglo Platinum, where siliceous...strike.2 Data from drill cores and mapping within the mine have shown the reef to consist essentially of two...Paul Armitage to carry out fieldwork at Sandsloot mine and the assistance of the staff of the geology department...department and assay laboratory at the mine is gratefully acknowledged. References 1. Buchanan D. L. |  | | Book | | a U a < O SCIENTIFIC RESULTS or A JOURNEY IN BRAZIL. ¿T. LOUIS AGASSIZ, ’H I S TRAVELLING COMPANIONS...COMPANIONS. GEOLOGY AND PHYSICAL .OF B y GEOGRAPHY BRAZIL. ÓH. FBED . HARTT, P R O F E S S O R o r Q B...volume on the Physical Geography and Geology of Brazil as a summary of the scieutiftc results of my explorations...is the result of two journeys made by myself in Brazil. The first was undertaken under the direction of...the jour ney is- to be found in the “ Journey in Brazil,” it is not necessaiy to repeat it here. My companion |  | | Journal (article/letter/editorial) | | 8-10 J U N E 30, 1919 OUTLINES OF THE GEOLOGY OF BRAZIL TO ACCOMPANY THE GEOLOGIC MAP OF BRAZIL1 BY JOHN............................ 199 Geologic maps of Brazil..................................................to the Society under the title “Geologic Map of Brazil.” X IV — B o l l . G eol . S oc . A m ., V o l... 190 J . C. BRANNER----OUTLINES OF THE GEOLOGY OF BRAZIL Page Tertiary...................................Matto Grosso.................................. 262 Minas Geraes......................................... |  | | Journal (article/letter/editorial) | | Grumiplucite Grunerite Guanajuatite Gudmundite Gypsum Hafnon Halite Halloysite Halotrichite Hambergite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...give the green color. Duricrusts containing chiefly gypsum. It is an ultramafic rock, a variety of peridotite...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting...gold-bearing quartz veins in the southern Para State, Brazil (Angelica et al., 1997). Chromium muscovite named | | | Journal (article/letter/editorial) | | Grumiplucite Grunerite Guanajuatite Gudmundite Gypsum Hafnon Halite Halloysite Halotrichite Hambergite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...give the green color. Duricrusts containing chiefly gypsum. It is an ultramafic rock, a variety of peridotite...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting...gold-bearing quartz veins in the southern Para State, Brazil (Angelica et al., 1997). Chromium muscovite named |
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