 | Cabral, A. R., Tupinambá, M., Lehmann, B. (2013) Spessartine in compact-hematite rock, southern Serra do Espinhaço, Minas Gerais, Brazil, and genesis of compact hematite. Mineralogical Magazine, 77 (8) 3197-3215 doi:10.1180/minmag.2013.077.8.12 | Journal (article/letter/editorial) | | compact-hematite rock, southern Serra do Espinhaço, Minas Gerais, Brazil, and genesis of compact hematite A. R. CABRAL1...Xavier 524 s. A4016, 20550-050 Rio Janeiro-RJ, Brazil [Received 29 March 2013; Accepted 5 November 2013;...compact-hematite rock, spessartine, REE, Eu anomaly, Minas Gerais, Brazil. Introduction GARNET occurs in metamorphosed...hematite from the southern Serra do Espinhaço, Minas Gerais, Brazil. We provide microanalytical data, obtained...siliciclastic metasedimentary rocks of the diamantiferous Sopa-Brumadinho Formation (Paternoster, 1980; Hoppe, |  | | Journal (article/letter/editorial) | | THE DIAMOND-B[SARING MINAS REGION OF NORTHERN GERAES, BRAZIL. LUCIANO J. MORAES AND DJALMA GUIMAR_•ES...Stateof Minas Geraesstretchesfrom the head-watersof the Jequitinhonha River, Southof Diamantina,northwardto...tributaries,includingthe Rio Arassuahy. South of Diamantina, the Parafina River and its tributaries are...main topographical feature of the region between Diamantina and Grao Mogol is Serra do Espinhago,a mountain...situatedthe principal mineral depositsof economicvalue to Brazil, such as iron, man- ganese,gold, and diamonds |  | Cabral, Alexandre Raphael, Tupinambá, Miguel, Lehmann, Bernd, Kwitko-Ribeiro, Rogerio, Vymazalová, Anna (2008) Arborescent palladiferous gold and empirical Au2Pd and Au3Pd in alluvium from southern Serra do Espinhaço, Brazil. Neues Jahrbuch für Mineralogie - Abhandlungen, 184 (3) 329-336 doi:10.1127/0077-7757/2008/0103 | Journal (article/letter/editorial) | | Au3Pd in alluvium from southern Serra do Espinhaço, Brazil Alexandre Raphael Cabral, Miguel Tupinambá, Bernd...region, in southern Serra do Espinhaço, Minas Gerais, Brazil. The Córrego Bom Sucesso alluvium is regarded...with the Serra Pelada Au–Pd–Pt deposit in northern Brazil and the unconformity-related Au–Pd–Pt occurrences...Serra do Espinhaço, Córrego Bom Sucesso, Minas Gerais, Brazil Introduction Although palladiferous gold...gold mineralisation occurs in Brazil. About 25 years ago in northern Brazil, a spectacular gold rush took |  | | Journal (article/letter/editorial) | | DISTRICT, LESTER DEPOSITS MINAS No. 7 1928 OF THE DIA- GERAES. BRAZIL. S. THOMPSON. CONTENTS. ...Uplift and Erosion .............................. Diamantina Conglomerate ..................................S. THOMPSON. ducers.This•pplies especially to Brazil. Here,withtheimpetusgivendiamondmining in SouthA'frica...•.•- •7 • e ale FIG. I. Sketchmap of the Diamantina District showinglocationof principal upland deposits...DEPOSITS OF MINAS GERAES, BRAZIL. 707 The oldestand most important diamondfield of Brazil, thus far |  | | Journal (issue) | | Cave karst in the quartzite rocks of Diamantina, Minas Gerais, Brazil ..………….……….………………… 16 Dumitru FRUNZESCU...CAVE KARST IN THE QUARTZITE ROCKS OF DIAMANTINA, MINAS GERAIS, BRAZIL Heinrich Adolf HORN1, Essaid BILAL2...RODET5 1 IGC-UFMG, Universidade Federal de Minas Gerais, Belo Horizonte-MG UMR CNRS 5600 EVS-ENSMSE-Géosciences...district of Diamantina - MG and formed in quartzite rocks of the Espinhaço Supergroup, Sopa-Brumadinho...Noncarbonatic karst, Salitre Cave, Espinhaço Range, Diamantina-MG 1. Introduction The study of karsts in non-carbonate |  | | Journal (article/letter/editorial) | | carbonado diamond. Keywords: carbonado, diamond, Brazil, cathodoluminescence, carbon isotopes, nitrogen...orthoclase, quartz, kaolinite, hematite, ilmenite, magnetite and rutile (e.g., Trueb & de Wys 1969), (iii)...textural studies on four samples of carbonado from Brazil using cathodoluminescence. The internal variations...diamond-bearing carbonado mine is located in the Diamantina region within the Espinhaco range, along the...craton within the Aracuiai fold belt in east–central Brazil (Trompette et al. 1992). Four samples of carbonado |  | | Book | | Alkmim Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent Regional...Alkmim • Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent 123...Janeiro Maracanã, Rio de Janeiro Brazil Fernando F. Alkmim Escola de Minas Universidade Federal de Ouro...Preto Ouro Preto Brazil Umberto G. Cordani Universidade de São Paulo São Paulo Brazil ISSN 2364-6438...northern São Francisco craton known as the Chapada Diamantina. The cliffs and mesas expose the Mesoproterozoic |  | | Journal (article/letter/editorial) | | next, 10 mile wide rivers pouring down from the Diamantina and Georgina country bear the Queensland flood...abundant apatite, some fairly large zircons, magnetite, and allanite. 101. JEgirine-riebeckite-porphyry... The only accessory mineral is a very little magnetite and no nepheline or analcime could be detected...fair amount of accessory apatite and a little magnetite. 121. Orthophyre.—A porphyritic rock with phenocrysts...thin slice. The only accessory seen is a little magnetite. 125. Riebeckite-cegirine-granite.—This rock is |  | | Journal (article/letter/editorial) | | the writer calls the high plateau of south-east Brazil. This would indicate that the diamonds now found...Lavras series. The quartzites of the Diamantina region in Minas Geraes are supposed to be contemporaneous...been removed by denudation. If the assumed pipes of Sopa, Boa Vista, and elsewhere are of late Paraguassu...highly metamorphosed. Whether the sericitic schist of Sopa is the metamorphosed remnant of an igneous intrusion...wealth over such great areas of sedimentary rock in Brazil, would certainly warrant a closer investigation |  | | Journal (article/letter/editorial) | | observations, in great part proposed paper made in Brazil bearing upon thus far been have unpublished, that...water) mine in the Bagagem district of western Minas Geraes, which has been excellently studied by Messrs...characterized by grains of pyroxine, perofskite, and magnetite, to beds of clay and impure limestone that overlie...(Bagagem) or of the other diamantiferous regions of Brazil. Still more peculiar and I891. E. HUSSAK: In the...is the presence in great abundance of magnetite and of a magnetite rock, which Dr. Hussak has succeeded |  | | Journal (issue) | | geology, and notable localities of diamond mining in Brazil, and outlines plans for future diamond production... Svisero, James E. Shigley, and Robert Weldon Brazil, which commanded global production in the 1700s...principally in the states of Minas Gerais and Mato Grosso, are presented. W hile Brazil is widely known for...Arraial do Tijuco (later named Diamantina) in the state of Minas Gerais (Calógeras, 1904; Leonardos, 1959;...and Bartorelli, 2010). For the next 150 years, Minas Gerais was the world’s major supplier of gem diamonds |  | | Journal (issue) | | 0026-4628 'Continued on p. 415 Articles Diamonds in Brazil .................................................Rio de Janeiro, Brazil Since their discovery in Minas Gerais, near the town of Diamantina, Brazilian diamonds...mining, fables and dreams. By the end of the 1700’s Brazil had become the world’s leading producer of diamonds...century. fficially the discovery of diamonds in Brazil is dated at 1727. Gold prospectors had found occasional...false idea that Brazil is a producer.” The sheer volume of diamonds coming from Brazil soon overwhelmed |  | | 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 |  | | Journal (article/letter/editorial) | | of the Veredas formation (Northern Espinhaço, Brazil): LA-ICP-MS age determinations on relict and recrystallized...of the Veredas formation (Northern Espinhaço, Brazil): LA-ICP-MS age determinations on relict and recrystallized...quartzites of the Veredas formation (Northern Espinhaço, Brazil): LA-ICP-MS age 3 determinations on relict and...Veredas Formation (Northern 22 Espinhaço fold belt, Brazil) have been dated using laser ablation inductively...1996) are together 62 with the Diamantina Plateau (Chapada Diamantina) prominent geological and 63 |  | | Book | | kingdom of ancient India to Venice, Antwerp, Diamantina, and Kimberley. The second section, THE ROUGH...the mines of South Africa and India, Zaire and Brazil, Sierra Leone and Venezuela, Angola and Borneo...Diamond Company, Bombay; the Ministerio de Energia y Minas, Ciudad Bolivar; Scierie Janssens, Antwerp; M. Schnitzer...Facts and Figures The Portuguese Diamond Policy Brazil and the Diamond Trade G. Lenzen 66 68 69 73 74...Triangle” of Minas Gerais Diamantina The Tejucana Mine H. Allen Zaire R. Maillard Brazil 180 180 182 |  | | Report (issue) | | Janeiro______________________ Sao Paulo__________________________ Minas Gerais_______________________ Espirito Santo______________________...Monazite localities-Continued South America-Continued Brazil-Continued Beach placers _________________________...and Idaho. Most of the world output has come from Brazil, India, and the Republic of South Africa, but 12...beaches and elevated bars along the southern coast of Brazil were the world's main source of commercial monazite...international importance. Stream placers in the interior of Brazil are virtually unexplored; they may constitute an |  | Henrique-Pinto, R., Janasi, V.A., Vasconcellos, A.C.B.C., Sawyer, E.W., Barnes, S.-J., Basei, M.A.S., Tassinari, C.C.G. (2015) Zircon provenance in meta-sandstones of the São Roque Domain: Implications for the Proterozoic evolution of the Ribeira Belt, SE Brazil. Precambrian Research, 256. 271-288 doi:10.1016/j.precamres.2014.11.014 | Journal (article/letter/editorial) | | the Proterozoic evolution of the Ribeira Belt, SE Brazil R. Henrique-Pinto a,∗ , V.A. Janasi b , A.C.B.C...Universidade de São Paulo (USP), Brazil c Geologist Consultant, São Paulo, Brazil b a r t i c l e i n f o...Proterozoic metasedimentary successions of southeast Brazil. Trace element chemistry of most detrital cores...Ribeira Belt in the Proterozoic evolution of SE Brazil is still enigmatic in spite of a significant amount...parallel to the coastline of southeast and south Brazil (Hasui et al., 1975), current usage (e.g., Campanha |  | | Book (volume) | | fashionable as a gem. state of Minas Geraes, (1968) It is Brazil. found principally in San Diego...Other forms „ 7a, b. Rose recoupee ,, ,, 162 Brazil : S. ., , sphere of Bort Ruby, 6. 7. crystal...Stewart (from South Africa) Mr. Dresden's (from Brazil) c. ... ... new form PLATE XL 76 (Facing ... . . Size). ..... Star of the South (from Brazil) Florentine 77 ,, 78 ,, 78 „ 15. 11a,...CUTTING. Fig. 1«, VII. „ 79 (Facing p. 168.) IN BRAZIL KIMBEKLEY DIAMOND MINE pear- same, triangular |  | | Report (issue) | | Persi~ • •• ••• Siam ••• • • •• ••• Argentina Brazil ••• •• -· ••• .. ' .. " •• •• • • • •...compact. A special variety of diamo~d peculiar to Brazil is known as carbonado or '' carbon ''; it is black...Russia, Brazil, South-West Africa. Topaz.-Brazil, Russia, Japan, Southern Rhodesia. · Be1"yl.-Brazil, Madagascar...Russia. OlirysoberyZ.--C'e ylon, India, Russia, Brazil, Southern Rhodesia. Spinel.--Oeylon, .l n•dia,...Zircon.-Oeylon, Siam, .Australia. Q,u artz, etc.-Brazil, ~fadagascar, J.apan, Uruguay, R11ssia, Ceylon |  | | Book | | potential deposits of SiO2 raw materials in Argentina, Brazil, Germany and Norway. The third part of the book...collaboration between scientists from Australia, Brazil, Canada, Germany, Norway, Switzerland and the USA...Color-Enhancing of Gemological Crystalline Quartz in Brazil . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . 6.3.3 Quartz Color-Enhancing in Brazil. . . . . . . . . . . . . . . . . . . . . . 139...50740-530, Brazil Mario L. S. C. Chaves Departamento de Geologia, IGC, Universidade Federal de Minas Gerais |  | | Catalog/List | | AM CT 15 72019 Hematite “Rose” Sopa, Diamantina Minas Gerais Brazil This is a solid example of Hematite...Hematite “rose” from South America. The “rose” from Brazil displays captivating hexagonal crystals stacked...2019 | 11:00 AM CT 17 72023 Rose Quartz Minas Gerais Brazil Rose Quartz is a prized mineral among collectors...Topaz Minas Gerais Brazil This stunning mineral specimen is that of a bright Blue Topaz from Brazil. This...Green Beryl Minas Gerais Brazil This is an intriguing single Green Beryl crystal from Brazil. It displays |  | | Book (edition) | | groundmass of pale brown glass and tiny grains of magnetite. Island of Mull, Scotland igneous rocks was based...quartz (clear), feldspar (pale brown, ‘dusty’) and magnetite (black). Field of view: 4 mm across. St Kilda...m (26 ft) thick at Urubu, near Araçuai, Minas Gerais, Brazil. Fine pink and green gem-quality tourmaline...acid members of the volcanic province in southern Brazil and Uruguay, and the fire opals occurring in small...amethyst from volcanic rocks in Rio Grande do Sul, Brazil. The amethyst crystals are more strongly coloured |  | | Book | | distributed accessory minerals of magmatic rocks, e.g. magnetite, zircon, ilmenite and rutile. We must add to these...regular intercalations of crystals of haematite, magnetite or ilmenite. With opal the play of colours is...brown patterns. Clear quartz on the top left. From Brazil. Agate after the river Achates in Sicily. A variety...Among the most important of these minerals are magnetite, titanomagnetite, ilmenite, rutile and other spinels...rest of the magma, forming large ore deposits of magnetite (magnetic iron ore) and apatite. The mineral parageneses |  | | | | distributed accessory minerals of magmatic rocks, e.g. magnetite, zircon, ilmenite and rutile. We must add to these...regular intercalations of crystals of haematite, magnetite or ilmenite. With opal the play of colours is...brown patterns. Clear quartz on the top left. From Brazil. Agate after the river Achates in Sicily. > 33...Among the most important of these minerals are magnetite, titanomagnetite, ilmenite, rutile and other ...rest of the magma, forming large ore deposits of magnetite (magnetic iron ore) and apatite. The mineral parageneses |  | | Report (volume) | | the Araras and Corumbá groups, Paraguay Belt, Brazil 487 FIGUEIREDO, M. F., BABINSKI, M. & ALVARENGA...J. S. The Serra Azul Formation, Paraguay Belt, Brazil 499 GUIMARÃES, J. T., MISI, A., PEDREIRA, A... L. The Bebedouro Formation, Una Group, Bahia (Brazil) 503 MISI, A., KAUFMAN, A. J., AZMY, K., DARDENNE...Neoproterozoic successions of the São Francisco Craton, Brazil: the Bambuı́, Una, Vazante and Vaza Barris/Miaba...Neoproterozoic Macaúbas Group, Araçuaı́ orogen, SE Brazil 523 ROCHA-CAMPOS, A. C., DE BRITO NEVES, B. B |
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