 | | Journal (article/letter/editorial) | | altered chromitites of the Campo Formoso layered intrusion (Bahia State, Brazil): control by magmatic and...hydrothermal metasomatism in chromitites of the Campo Formoso layered intrusion produced spectacular chromite...stable at low temperature. The Campo Formoso layered intrusion of Brazil provides a useful example for...chromitite layers from one of the deposits of Campo Formoso (Cascabullhos), and emphasized the similarity...exposed in the mines of Cascabulhos, Pedrinhas, Limoeiro, and Mato Limpo. The principal aim of this investigation |  | | Journal (article/letter/editorial) | | the Northern Edge of the São Francisco Craton, Brazil Vitor Bandeira Martins Matos* and Cesar Fonseca...Brasília, Brasília, Distrito Federal 70910-900, Brazil Abstract The Caboclo dos Mangueiros deposit, the...recent discovery of Ni-Cu sulfide mineralization in Brazil, has estimated resources of 200 million tonnes...window for exploration for Ni-Cu-PGE sulfides in Brazil. Introduction Ni-Cu-platinum group element (PGE)...Caraíba, S/N, Distrito Pilar, Jaguarari, Bahia 48967-000, Brazil. ISSN 0361-0128; doi: 10.5382/econgeo |  | | Journal (article/letter/editorial) | | Economic Geology, v. 108, pp. 1753–1771 The Limoeiro Deposit: Ni-Cu-PGE Sulfide Mineralization Hosted...Conduit in the Borborema Province, Northeastern Brazil Jonas Mota-e-Silva,1,2,† Cesar Fonseca Ferreira...01037-912, Brazil 2 Instituto de Geociências, Universidade de Brasília, Brasília, DF. 70910-900, Brazil Abstract...Abstract The Limoeiro deposit, located in a high-grade mobile belt of the Brasiliano orogenic cycle (650–500...age of the ultramafic intrusion that hosts the Limoeiro deposit is not yet known, but regional geologic |  | Mota-e-Silva, J., Prichard, H. M., Filho, C. F. Ferreira, Fisher, P. C., McDonald, I. (2015) Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50 (8) 1007-1029 doi:10.1007/s00126-015-0585-0 | Journal (article/letter/editorial) | | Platinum-group minerals in the Limoeiro Ni–Cu–(PGE) sulfide deposit, Brazil: the effect of magmatic and...Springer-Verlag Berlin Heidelberg 2015 Abstract The Limoeiro Ni–Cu–(platinum-group elements (PGE)) deposit...igneous tubular conduit system in northeastern Brazil. Representative ores from the deposit have been...Pt–Ni–Bi-bearing merenskyite (PdTe2) enclosed primarily by pyrrhotite, suggesting that it is formed by exsolution from...13212-161, Brazil 2 Instituto de Geociências, Universidade de Brasilia, Brasília, DF 70900-970, Brazil 3 |  | 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) | | Pd-Cu-O AND Pd-I-O COMPOUNDS IN THE LIMOEIRO Ni-Cu-(PGE) DEPOSIT, BRAZIL JONAS MOTA-E-SILVA Votorantim Metais...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...weathering of platinum-group minerals (PGM) in the Limoeiro nickel-copper and platinum-group element [Ni-Cu-(PGE)]...the supergene reaction front of the deposit. Pyrrhotite with smaller equal proportions of chalcopyrite |  | | Report (issue) | | Zimbabwe. • Eight industrialized countries4 that mine little or no chromite have a significant (an estimated...chromium (in the form of ores, 3 A captive mine is a mine that produces solely for the parent company...profit-motive criteria would normally result in mine closure. Chromite supplies have been disrupted....mined-the platinum-mineral operation (Western Platinum mine) in the UG2 chromitite layer of the western Bushveld...Reef ores were extracted from the Western Platinum mine, yielding 6,656 kg of platinum-group elements, 1 |  | | 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 |  | | Book | | born hills appear parallel to Mahagiri range due to mine-waste dumping. Unpaved roads serve the movement...The sky is gloomy throughout the day due to the mine and road dust. Social evils, crime, alcoholism,...education, counseling, and training. Making stringent mine-safety rules is not the solution—it has to be implemented...Ore Group Orissa Mining Corporation Limited Run of Mine Reconnaissance Permit tonnes tonnes per annum/day...or Nickeline 1.3.2.3 Pentlandite 1.3.2.4 Pyrrhotite 1.3.3 Minerals of Chromium 1.3.3.1 Chromite |  | Barkov, Andrei Y., Shvedov, Gennadiy I., Flemming, Roberta L., Vymazalová, Anna, Martin, Robert F. (2017) Melonite from Kingash and Kuskanak, Eastern Sayans, Russia, and the extent of Bi-for-Te substitution in melonite and synthetic Ni(Te,Bi)2–x. Mineralogical Magazine, 81 (3) 695-705 doi:10.1180/minmag.2016.080.119 | Journal (article/letter/editorial) | | NiTe2, named after its type locality, the Melones mine, at Carson Hill in the Mother Lode Belt, Calaveras...accessory constituent of the ore at the Robb-Montbray mine in northwestern Québec, Canada. Although melonite...51–4.62Ni4.29–4.45Co0–0.08)Σ8.96–8.99S8.03], pyrrhotite [po; Fe0.89S], a calcic amphibole [amp; a magnesian...latter include base-metal 697 sulfides (BMS: pyrrhotite, pentlandite, chalcopyrite, cubanite, bornite...melonite from: Stanislaus mine, California, USA (Pemberton, 1983); Strathcona mine (Rucklidge, 1969), Sudbury |  | | Journal (article/letter/editorial) | | Magmatism in the Northern Borborema Province, Northeast Brazil: Tectonic Setting and Potential for Deposits Alanielson...Brasília, 70910-900 Brasília, Distrito Federal, Brazil ABSTRACT Mafic-ultramafic intrusions form a 32-km-long...Piranhas terrane in the Borborema Province, Northeast Brazil. The mafic-ultramafic intrusions consist of wehrlite...Aguablanca deposit in Spain (Tornos et al. 2001). In Brazil, the potential for exploration in orogenic belts...Transversal Domain of the Borborema Province (Limoeiro deposit; Santos et al. 2014; Mota-e-Silva et al |  | | Journal (article/letter/editorial) | | “Eagle/Kalatongke Type” Troc Sul DD. “Nebo-Babel (Limoeiro) Type” - elongated funnel, flared dyke Plg ...boat-shaped layered intrusion, as at Fazenda Mirabela (Brazil) —disseminated layer up to 100 m thick, mined for...Eagle deposit (Michigan, USA) and the Kalatongke mine (Inner Mongolia, China). (D) Subhorizontal tube...chonolith, named after Nebo-Babel (Canada) and Limoeiro (Brazil). (E) Subhorizontal ‘fat ski’ chonolith, named...sulfide mode, have a characteristic assemblage of pyrrhotite–pentlandite– chalcopyrite–platinum-group minerals |  | | Journal (article/letter/editorial) | | Pre-proofs The Luanga deposit, Carajás Mineral Province, Brazil: different styles of PGE mineralization hosted... The Luanga deposit, Carajás Mineral Province, Brazil: different styles of PGE mineralization hosted... The Luanga deposit, Carajás Mineral Province, Brazil: different styles of PGE mineralization hosted...70910-900, Brazil. ² VALE S/A, Av. Getulio Vargas, 671/13º, 30112-020, Belo Horizonte, MG, Brazil ³ Present...disseminated base metal sulfides (pentlandite > pyrrhotite >>> chalcopyrite) located along the upper contact |  | Barnes, Stephen J., Mole, David R., Hornsey, Richard, Schoneveld, Louise E. (2019) Nickel-Copper Sulfide Mineralization in the Ntaka Hill Ultramafic Complex, Nachingwea Region, Tanzania. Economic Geology, 114 (6) 1135-1158 doi:10.5382/econgeo.4677 | Journal (article/letter/editorial) | | (Finland) as an intermediate stage and Mirabela (Brazil) as the layered intrusion end member. Introduction...Maier et al., 2011), Mirabela, Brazil (Barnes et al., 2011c), Limoeiro, Brazil (Mota-e-Silva et al., 2011)... Opx = orthopyroxene, Pn = pentlandite, Po = pyrrhotite. Downloaded from https://pubs.geoscienceworld...characteristic magmatic sulfide mineralogy of pyrrhotite, pentlandite, and chalcopyrite, with minor pyrite...forming loop textures around the margins of equant pyrrhotite grains (Fig. 10A). In some cases, particularly |  | | Journal (article/letter/editorial) | | that Keith wandered around the neighboring gold mine dumps and developed an interest in minerals. He...found in 1967 in the Pioneira mine, Teofilo Otoni, Minas Gerais, Brazil. Downloaded by [Stockholm University...from the Barra de Salinas mine, Aracuai-Itinga district, Minas Gerais, Brazil. Although the owner did not...specializing in colored gemstones. Keith's travels in Brazil in search of gems and crystal specimens have added...from the Jonas mine in Brazil have sold for several hundred thousand dollars. A Jonas mine rubellite called |  | | Journal (article/letter/editorial) | | for the PGE-mineralized magmatism in Carajás, Brazil Eduardo Teixeira Mansur, Cesar Fonseca Ferreira...for the PGE-mineralized magmatism in Carajás, Brazil, LITHOS (2016), doi:10.1016/j.lithos.2016.09.036...constraints for the PGE-mineralized magmatism in Carajás, Brazil SC R IP Authors: Eduardo Teixeira Mansur¹ and...Universidade de Brasília, Brasília-DF, 70910-900, Brazil. email: etmansur@gmail.com 2 Instituto de Geociências...Universidade de Brasília, Brasília-DF, 70910-900, Brazil. email: cesarf@unb.br AC CE P TE D Corresponding |  | Le Vaillant, Margaux, Barnes, Stephen J., Mole, David R., Fiorentini, Marco L., Laflamme, Crystal, Denyszyn, Steven W., Austin, James, Patterson, Ben, Godel, Belinda, Hicks, John, Mao, Ya-Jing, Neaud, Antoine (2020) Multidisciplinary study of a complex magmatic system: The Savannah Ni-Cu-Co Camp, Western Australia. Ore Geology Reviews, 117. 103292 doi:10.1016/j.oregeorev.2019.103292 | Journal (article/letter/editorial) | | Australia (Maier et al., 2016), Mirabela and Limoeiro in Brazil (Barnes et al., 52 2011; Mota-e-Silva et...Intrusion until 2008 when the 122 Sally Malay Ni-Cu-Co mine was re-named Savannah. Here, we refer to the current...composed of primary magmatic “breccia-textured” pyrrhotite-pentlandite-chalcopyrite rich 167 massive sulfides...176 to the north and north-west of the Savannah mine as a 1.25 km2 body of interlayered norite, 177...201 consists of magmatic “breccia-textured” pyrrhotite-pentlandite-chalcopyrit-rich massive 202 sulfides |  | | Journal (issue) | | et al. was said to have originated in the Wessel mine near Hotazel by Karuman, N. Cape Province, S. Africa...much from Sri Lanka, Australia and Colombia and Brazil, but what impressed me most was the extent of the...Tourmaline mine (yellow-green, rose-red, yellow and colourless tourmaline), the Otjimbingwe mine (red and...the Kubas mine (fine quality yellowish-green, red and rose-colour), the Albrechtshohe mine (emerald-green)...(emerald-green), the Brandberg Tourmaline mine (dark red, colourless, darkand yellowish-green). M.O'D. BEYER |  | | Journal (article/letter/editorial) | | Ni-Cu-PGE deposit is the only past-producing nickel mine (1958–1974) in the Canadian Cordillera of British...represent mineralized conduits and consist of pyrrhotite, pentlandite (+argentopentlandite), chalcopyrite...remains British Columbia’s only past-producing nickel mine (1958–1974), having produced ~4.2 Mt of ore with... Chinaman Pride of Emory Upper 4600 1900 ad mine ro 5481000 mN 5481000 mN R id ge 606500 mE...the Giant Mascot ultramafic suite along the upper mine road (Fig. 2). Deformation features of the Spuzzum |  | | 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 |  | | Journal (issue) | | THE JOHN PARNAU COLLECTION REDLEDGEITE REDLEDGE MINE, NEAR WASHINGTON, CALIFORNIA. THIS MATERIAL WAS...Panasqueira, Portugal. See M. R. 2, 2, p. 73. The mine operators are now vending specimens although they...terminated crystal l by 4 cm) from the Dallas Gem mine, San Benito County, California. New veins of this...Conselheiro Pena, near Linopolis, Minas Gerais, Brazil. This is one of the specimens from the first (and...1.7 by 1 by 1 cm) Erupcion mine, Los Lamentos, Mexico. The Erupcion mine has produced far less wulfenife |  | Le Vaillant, Margaux, Barnes, Stephen J., Fiorentini, Marco L., Barnes, Sarah-Jane, Bath, Adam, Miller, John (2018) Platinum-group element and gold contents of arsenide and sulfarsenide minerals associated with Ni and Au deposits in Archean greenstone belts. Mineralogical Magazine, 82 (3) 625-647 doi:10.1180/minmag.2017.081.100 | Journal (article/letter/editorial) | | komatiite-hosted Fortaleza de Minas deposit in Brazil (De Almeida et al., 2007). Additionally, a few...disseminated (15-45 vol%) sulfides with 1-2 wt% Ni (pyrrhotite, pentlandite, minor chalcopyrite, pyrite and...and massive sulfides with 7.5-9 wt% Ni (80 vol% pyrrhotite, <8 vol% pentlandite and <12 vol% pyrite, chalcopyrite...presence of patches/veins of calcite – dolomite – pyrrhotite – pentlandite – chalcopyrite – chlorite – gold...veins developed in this sub-stage along with pyrrhotite, pentlandite and cobaltite (Figure 9). Within |  | | Journal (issue) | | the Morro da Mina manganese mine, Conselheiro Lafaiete, Minas Gerais, Brazil. Probably the world’s finest...2008 issue for his article on the Mockingbird gold mine). Like the rest of us on the staff, he will be striving...minerals on DVD wilensky Mimetite, Pingtouling mine, Liannan Co., Guangdong, China. Wilensky Fine Minerals...which he has undertaken since 1969 in Minas Gerais, Brazil. Here he reviews some localities in the region...long-established contacts with Brazilian dealers and mine owners, I was able to see and photograph nearly |  | | Journal (issue) | | Peter Richards & D. G. Howard The Pezinok antimony mine, Male Karpaty Mountains, Slovakia.................Minerals McCullough Fossils Menezes, Luiz, Minerals - Brazil Midwest Minerals Mineral Exploration Services Mineral...S. JEM, Inc. Usman Imports Valadares Minerals - Brazil West Coast M ining Wolfe, Tom, Minerals Wright's...Senkvicka 5, 902 01 Pezinok, Slovakia T h e P ezin o k mine, an antim ony deposit m ined since 1 9 4 0 , has...the locality. INTRODUCTION The Pezinok antimony mine in southwestern Slovakia is a relatively small ore | | | Journal (issue) | | THE JOHN PARNAU COLLECTION REDLEDGEITE REDLEDGE MINE, NEAR WASHINGTON, CALIFORNIA. THIS MATERIAL WAS...Ponosqueira, Portugal. See M. r t 2, 2, p. 7 .3. The mine operators ore now vending specimens although they...terminated crystal l by 4 cm) from the Dallas Gem mine, Son [lenito County, California. New veins of this....7 by l by l cm) Erupcion mine, Los Lomentos, Mexico. The Erupcion mine hos produced for less wu lfenite...lfenite than the adjoining Ahumada mine, but both ore now closed. At least o dozen recognizeoble habits |  | McFall, Katie, McDonald, Iain, Tanner, Dominique, Harmer, R.E. (Jock) (2019) The mineralogy and mineral associations of platinum-group elements and precious metals in the Aurora Cu-Ni-Au-PGE deposit, Northern Limb, Bushveld Complex. Ore Geology Reviews, 106. 403-422 doi:10.1016/j.oregeorev.2019.02.008 | Journal (article/letter/editorial) | | 1. These veins contain up to 50% interstitial pyrrhotite-pentlandite-chalcopyritepyrite. Unit 2 contains... assemblages, and 1–5% chalcopyrite pyrite/pyrrhotite associated with hydrothermal alteration. The...The Platreef is mined in the Mogalakwena open pit mine which comprises the Sandsloot and Overysel farms...modal % sulphides. These consist of interstitial pyrrhotite-pentlandite-chalcopyrite pyrite assemblages...Chalcopyrite is present both enclosing pyrrhotite and as inclusions within pyrrhotite and comprises 35 – 50% of the |
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