 | | Journal (issue) | | crystal, 75 mm long, from the Cruzeiro mine, Minas GĂ©rais, Brazil. See 'The location, geology and mineralogy...mineralogy of gem tourmalines in Brazil' on pp. 263-98 ISSN: 1355-4565 262 J. G e m m , 1996, 25, 4 ...location, geology and mineralogy of gem tourmalines in Brazil Jacques P. Cassedanne, Dr. Sc. *, and Maurice Roditi...tourmaline is the 'Eastern pegmatitic province' of Minas Gerais. One general and three detailed maps of specific...Non-pegmatitic deposits of tourmaline include the Brumado mine (Bahia) which produces fine red uvite crystals and |  | | Journal (article/letter/editorial) | | mystical source of exceptionul specitiiens-Minus Gerais. So muny ditverenl things hud coiiie from this...then I huve hud the opportunity to visit Minus Gerais six times und ulso the greut pleusure of yetting...1986: Maklng Connections Hyman had already been to Brazil three times and had made several good contacts...the third largest city in Brazil and the capital of the state of Minas Gerais. In Belo we were happy to...from the San Diego area who made frequent trips to Brazil. He knew the dealers, he knew the gems, and he |  | | Report (volume) | | Deposits in Minas Gerais Brazil GEOLOGICAL SURVEY BULLETIN 964-C Mica Deposits in Minas Gerais Brazil...M. BARBOSA and RESK FRAYHA, DIVISSO DE FOMENTO, BRAZIL GEOLOGIC INVESTIGATIONS IN THE AMERICAN REPUBLICS...da Produgao Mineral, Ministerio da Agricultura, Brazil, under the auspices of the Interdepartmental Committee...__________-___---_____---_-________ Exports of sheet mica from Brazil, 1900-1945-___-__-_______----______ General statement...___________________ Mica-mining industry in Minas Gerais.______________________________ General stat |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...UNIQUE MINERALS IN WORLD MUSEUMS  GEM TREASURES OF BRAZIL Cyan Magenta Yellow Black 1 Delev Ilia Deleff...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIAâMOSCOW 2004 3 Cyan Magenta Yellow Black...NATIONAL MUSEUM IN SOFIA 66 OTHER COLLECTIONS OF MINE IN BULGARIA 71 COLLECTIONS IN OTHER CITIES AROUND |  | | Journal (issue) | | a n d Peter C. Keller Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Governador Valadares...Summer 1985 85 GEM P E G m T I T E S OF MINAS G E M S , BRAZIL: THE T O U R W L I N E S OF THE G O V E...around the city of Araquai, i n northeastern Minas Gerais, and discussed 20 important mines in that area...tourmaline mines i n s o ~ ~ ~ h e a s t eMinas rn Gerais, in the broad area surrounding the gemstone capital...and tor her constant support, The many miners and mine owners who were so instrumentalin providing information |  | | 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 |  | Gomes, Celso de Barros, Azzone, RogĂ©rio Guitarrari, Rojas, Gaston Eduardo Enrich, Guarino, Vincenza, Ruberti, Excelso (2021) Agpaitic Alkaline Rocks in Southern Brazilian Platform: A Review. Minerals, 11 (9) 934 doi:10.3390/min11090934 | Journal (article/letter/editorial) | | University of SĂŁo Paulo, SĂŁo Paulo 05508-080, Brazil; rgazzone@usp.br (R.G.A.); gastonenrich@usp.br...occurrences located in southern Brazil and at the border between Brazil and Paraguay. All the Brazilian...References 1 Poços de Caldas 79â87 (Ar-Ar, K-Ar) 2 Itatiaia 67.5â71.3 Ma (U-Pb) ring-like nepheline syenite...these massifs are Poços de Caldas [14,42] and Itatiaia [15,43]. A small fraction of these evolved lithologies...regional tectonic factors [46,47] (Figure 1). In Brazil, alkaline centers occur predominantly dispersed |  | Amaral, G., Bushee, J., Cordani, U.G., Kawashita, K., Reynolds, J.H. (1967) Potassium-argon ages of alkaline rocks from southern Brazil. Geochimica et Cosmochimica Acta, 31 (2) 117-142 doi:10.1016/s0016-7037(67)80041-3 | Journal (article/letter/editorial) | | Potassium-argon ages of alkaline rocks f~om southern Brazil* G. AIV~R~L,~ J. BVS~EE,~ U. G. CORDA~,~ K . KAWASHITAt...Department of Geology, University of SRo Paulo, Brazil (Received 2 May 1966) A b s t r a c t - - W e...frequency) from 21 alkaline rock localities in southern Brazil. A general geological description is given for...Mesozoic basaltic rocks that occur widely in southern Brazil and neighboring c o u n t r i e s , a n d t h e...geologists in alkaline rocks. Like Africa and Russia, Brazil has one of the greater concentrations of this type |  | | Journal (article/letter/editorial) | | Late Cretaceous alkaline complexes, southeastern Brazil: Paleomagnetism and geochronology C.R. Montes-Lauar...(NVPEGEL), Caixa Postal 9638, 01065970 Scio Paula, Brazil b Departamento de Geofisica, Institute Astrokmico...NUPEGEL, Caixa Postal 9638, 01065-970 Sdo Paula, Brazil â Centro de Pesquisas Geocronolbgicas, Institute...Paula, Caixa Postal 20899, 01498-970 Silo Paulo, Brazil Received 4 May 1995; accepted 17 July 1995 Abstract...Cretaceous alkaline rocks from Po~os de Caldas, Itatiaia, Passa Qua&o and SIo Sebastiao Island were studied |  | | Journal (issue) | | Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By AurĂ©lien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...blood ruby, royal blue and cornflower sapphire, old mine/ Muzo green emerald, sunrise and sunset padparadscha...as mica schist, garnet-biotite gneiss and tourmaline-bearing muscovite-biotite granite. Mong Long hosts...The source of much of this pyrite is the Huanzala mine in west-central Peru, which has probably yielded |  | | Journal (issue) | | CollectorâPart II Fify-nine treasure hunts in Minas Gerais, 1969â2005 . . . . . . . . . . . . . 207 by...crystal cluster on matrix, 6 cm tall, from the Tsumeb mine, Tsumeb, Namibia. Sandor Fuss collection (2004)...Vug,â discovered on the 12th level of the Cresson mine, Cripple Creek district, Colorado in 1914 (see âThe...Mineralogical Record, volume 37, MayâJune, 2006 Cresson mine manager Dick Roelofs showing the Cresson Vug to...school; he did his Masterâs work at the Rueppele iron mine in Stanton, Missouri. He spent the years 1931â1932 |  | Brotzu, P., Gomes, C.B., Melluso, L., Morbidelli, L., Morra, V., Ruberti, E. (1997) Petrogenesis of coexisting SiO2-undersaturated to SiO2-oversaturated felsic igneous rocks: The alkaline complex of Itatiaia, southeastern Brazil. Lithos, 40 (2) 133-156 doi:10.1016/s0024-4937(97)00007-8 | Journal (article/letter/editorial) | | igneous rocks: The alkaline complex of Itatiaia, southeastern Brazil P. Brotzu a, C.B. Gomes b, L. Melluso...Geocihbas, Universidade de Skio Paula, Siio Paula, Brazil â Dipamâmento di Scienze della Terra, Universith...Received 10 December 1996; accepted 1 April 1997 The Itatiaia aWine complex is a Late Cretaceous intrusion (72...significant lithotype, the potassic affinity of the Itatiaia complex, and the relatively high Sr-isotopic ratios...complex of Itatiaia belongs to the Cretaceous-Tertiary alkaline province of southeastern Brazil, that is |  | | Journal (issue) | | Hawthorne & W. W. Pinch Fifty-nine treasure hunts in Minas Gerais . . . . . . . . . . . . . . . . . . . . . ....on albite matrix, 6.6 cm, from Conselheiro Pena, Minas Gerais, Brazil. Sandor Fuss/ Stuart Wilensky specimen;...Jeff Scovil photo. For more on the minerals of Minas Gerais see Guido Stegerâs memoirs in this issue. The...Toronto Technical College. He learned that the Tsumeb mine in South-West Africa was producing some very beautiful...the miners was nothing new at Tsumeb; they would mine around crystal pockets until lunchtime, then go |  | | Journal (issue) | | Design Feature articles Hydroxyl-herderite from Brazil and a guide to species nomenclature for the he...albite and elbaite, from Virgem da Lapa, Minas Gerais, Brazil. The crystal is 14.1 cm in height. Collection...Brazilian localities, Virgem da Lapa and the Golconda mine, have produced remarkable crystals of hydroxyl-herderite...Company spodumene mine, near Kings Mountain, North Carolina, and from the Dunton Gem mine, Newry, Maine,...Virgem da Lapa, Minas Gerais, Brazil (3)* 71-90% Golconda mine, Minas Gerais, Brazil (6) 53% Waldstein |  | | Journal (article/letter/editorial) | | evolution of the Quadrilfitero Ferrifero, Minas Gerais, Brazil Farid Chemale Jr.a, Carlos A. RosiCreb and...SaâoLeopoldo, RS, Brazil bCentro de Pesquisas M. T. da Costa/IGC, UniversidadeFederal de Minas Gerais. Pampulha...Pampulha, 31270-000 Belo Horizonte, MC, Brazil âDepartamento de Geologia, UniversidadeFederal de Ouro Preto...Preto. Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil Received February 3, 1992; revised version accepted...regional synclines in the overlying Rio das Velbas and Minas supergroups strata. Such regional synclines are |  | Thompson, R. N., Gibson, S. A., Mitchell, J. G., Dickin, A. P., Leonardos, O. H., Brod, J. A., Greenwood, J. C. (1998) Migrating Cretaceous-Eocene Magmatismin the Serra do Mar Alkaline Province,SE Brazil: Melts from the Deflected Trindade Mantle Plume?. Journal of Petrology, 39 (8) 1493-1526 doi:10.1093/petroj/39.8.1493 | Journal (article/letter/editorial) | | Magmatism in the Serra do Mar Alkaline Province, SE Brazil: Melts from the Deflected Trindade Mantle Plume...UNIVERSIDADE DE BRASIÌLIA, 70910 BRASIÌLIA DF, BRAZIL RECEIVED JULY 30, 1997; REVISED TYPESCRIPT ACCEPTED...volcanic remnants, and dyke swarms along coastal SE Brazil. The igneous rocks are emplaced into metamorphics...mantle plume impacted at ~85 Ma beneath interior SE Brazil where the lithosphere was too thick (>150 km),...strongly alkaline magmatism at Lages, southern Brazil, a site of localized rifting. After ~80 Ma, as |  | Mendes, Julio Cezar, Ăvila, Ciro Alexandre, Pereira, Ronaldo Mello, Heilbron, MĂŽnica P.L., Moura, Candido A.V. (2006) 207Pb/206Pb-ages of zircons from syn-collisional I-type porphyritic granites of the central Ribeira belt, SE Brazil. Gondwana Research, 9 (3) 326-336 doi:10.1016/j.gr.2005.11.004 | Journal (article/letter/editorial) | | porphyritic granites of the central Ribeira belt, SE Brazil Julio Cezar Mendes a,*,1, Ciro Alexandre AÌvila...central segment of the Ribeira belt, southeast Brazil, several foliated porphyritic granitic bodies intrude...more than 1000 km along the southeastern coast of Brazil (Fig. 1). It developed as the result of the amalgamation...porphyritic (hornblende)-biotite granites and hornblende granites. Between the towns of Itatiaia, Visconde de MauaÌ...MauaÌ and Santa Rita de Jacutinga, in the Minas Gerais/Rio de Janeiro/SaÌo Paulo state boundaries, voluminous |  | | Book | | BARTORELLI ::âą . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...26 mm), Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais. Collection of Alvaro Lucio. Photograph...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 (issue) | | manager Famous mineral localities: the Broken Hill mine, Zam bia..............................................351 Famous mineral localities: the Cruzeiro mine, past and present ................................Warren A new find of crystallized rose quartz in Minas G e ra is ........................................B-2120 Schoten COVER: ELBAITE on quartz from Minas Gerais, Brazil. The crystal is 8.5 mm in width. Photo by...Kitwe, Zambia HISTORY The Broken Hill lead-zinc mine is located near the town of Kabwe, 140 km north |  | Melluso, Leone, Guarino, Vincenza, Lustrino, Michele, Morra, Vincenzo, de' Gennaro, Roberto (2017) TheREE-and HFSE-bearing phases in the Itatiaia alkaline complex (Brazil) and geochemical evolution of feldspar-rich felsic melts. Mineralogical Magazine, 81 (2) 217-250 doi:10.1180/minmag.2016.080.122 | Journal (article/letter/editorial) | | REE- and HFSE-bearing phases in the Itatiaia alkaline complex (Brazil) and geochemical evolution of feldspar-rich...Editor: Jason Harvey] ABSTR ACT The Late Cretaceous Itatiaia complex is made up of nepheline syenite grading...in the metamorphic rocks of the Serra do Mar, SE Brazil. The nepheline syenites are characterized by assemblages...The major- and trace-element composition of the Itatiaia rocks have variations linked to the amount of...high-field-strength elements, rare-earth elements, Itatiaia. Introduction THE Itatiaia igneous complex belongs to the Cretaceous-Cenozoic |  | | Report (chapter) | | do Rio de Janeiro (DGRG/UERJ), Rio de Janeiro, Brazil 2 Programa de PosgraduaçaÌo, Faculdade de Geologia...Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil *Corresponding author (e-mail: mauro.geraldes@gmail...to the Cabo Granite (104 Ma) are observed in NE Brazil. In West Africa, sparse AptianâAlbian ages are...break-up is presented below. In the SE region of Brazil, there were two major magmatic events in the continental...examples of the abovementioned magmatism in eastern Brazil, West Africa and adjacent oceanic areas. The Saint |  | | Journal (issue) | | SEPTEMBERâOCTOBER 2019 Articles The Golconda District, Minas Gerais, Brazil ..........................................TOURMALINE, 11.9 cm, from the Golconda I mine, Minas Gerais, Brazil Brice Gobin (Mineral Art) and Emanuele...China, South Africa, Namibia, Chile, Peru, Bolivia, Brazil and Mexico. His first exchange of specimens with...as well, and they started picking over the local mine deposits together. They were married in 1970, and... Zincolivenite with Ferrilotharmeyerite | Tsumeb Mine, Namibia | 7.0 x 7.0 x 6.0 cm CRYSTAL CLASSICS |  | | Journal (issue) | | localities: The Sapo mine, Ferruginha district, Conselheiro Pena, Minas Gerais, Brazil . . . . . . ...Menezes Famous mineral localities: The Lac dâAmiante mine, Black Lake, Thetford Mines, QuĂ©bec . . . . ...Localities: The Sapo Mine Ferruginha District, Conselheiro Pena Minas Gerais, Brazil Luiz Menezes Rua Esmeralda...Horizonte Minas Gerais, Brazil 30410-080 Email: lmenezesminerals@uol.com.br The Sapo mine exploits a...recently found at Brazilâs Sapo mine, near Goiabera, in Minas Gerais. The specimens show green and yellow |  | | 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...Bancroft, Ontario: an occurrence of large nepheline, biotite and albite-antiperthite crystals in calcite-cored...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 |  | | Journal (issue) | | volume 48, SeptemberâOctober, 2017 Figure 2. Mine workings at Paprok. Peter Lyckberg photo. In the...far more profitable to mine a simple granite to crush for road ballast than to mine a pegmatite in the hope...topaz occurring in the much older pegmatites of Brazil, the Urals and the Ukraine. Radiation-induced colors...Paprok village. Peter Lyckberg photo. Figure 5. Mine workings in the Mawi pegmatite. Ikram Mohammad photo...contact with the country rock, followed by a zone of biotite and microcline with quartz, aquamarine and black |
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