 | | 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 |  | | Journal (article/letter/editorial) | | Looking south along the main street in Governador Valadares; Ibituruna looms in the background. CARLOS...Roberto S. Ferreira, 586 35032-590 Governador Valadares Minas Gerais, Brazil RICHARD V. GAINES Route 3, Box...pegmatite minerals, the city of Governador Valadares in Minas Gerais figures prominently as a locality...locality. In actuality, Governador Valadares-or “Valadares,” as it is commonly referred to-is not the locus...Sentinel quarry) near Governador Valadares, Minas Gerais, Brazil. nador Valadares, with a population of |  | | Journal (article/letter/editorial) | | Minerais, Universidade Federal de Mato Grosso, Cuiabá, Brazil *Corresponding author, e-mail: rubia@cdp.ufmt.br...Universidade Federal de Ouro Preto, Ouro Preto, Brazil e-mail: hanna@degeo.ufop.br 3 Geochemical Laboratory...Province (northern Araçuai and western Governador Valadares in Minas Gerais) were analyzed for major, minor...trace elements, pegmatite, magmatic differentiation, Brazil. Introduction Muscovite is a common rock-forming...pegmatites, it is the fourth major mineral after quartz, K-feldspar and plagioclase (albite variety). Although |  | | Book | | Tourmaline, ltatiaia, Conseilheiro Pena, Governador Valadares, Brazil (Roger Titeux collection, France) 4...collection) 6 inches. Right: Rutile in quartz, lbitiara, Bahia, Brazil (Yves Gillet collection, France) 1...2 inches. Preceding pages: A Tourmaline, Minas Gerais, Brazil (4.2 inches) B Tourmaline, Queen Mine, San...case of rhodochrosite. 10 Amazonstone and smoky quartz, Lake George, Park Co., Colorado (Coil family-...levels of artistry with much harder minerals such as quartz, carnelian, lapis-lazuli, etc. Phenicians, Cretans |  | | Journal (issue) | | SEPTEMBER–OCTOBER 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 Marini...China, South Africa, Namibia, Chile, Peru, Bolivia, Brazil and Mexico. His first exchange of specimens with...Wulfenite | Erupción Mine, Mexico 11 x 10.5 x 5.2cm Quartz var. japan law twin, Ganesh Himal, Nepal, 10 cm...September–October, 2019 The Golconda District Minas Gerais, Brazil Carlos Cornejo1 Andrea Bartorelli2 Wendell |  | | 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 |  | | Journal (article/letter/editorial) | | painting by Stephen F. Greb. July/August: Pyrite, quartz, and galena, Camp Bird mine, Ouray, Colorado. Barbara...Jeffrey Scovil photo. November/December: Gold on quartz, Eagle's Nest mine, Placer County, California....Aegirine, Arkansas, 181 Aguilarite, 27 Albite, Minas Gerais, 313 Alforsite, 367 Allanite-(Ce), Colorado...Atalaia (the Sentinel Quarry) near Governador Valadares, Minas Gerais, Brazil, C. P. Barbosa, R. V. Gaines...Atalaia (the Sentinel Quarry) near Governador Valadares, Minas Gerais, Brazil, 310-13 Barite: Colorado, 106; |  | | Journal (article/letter/editorial) | | curators share their tales of obtaining specimens in Brazil. *7CLh Downloaded by ["Queen's University Libraries...this field was Allan Caplan, who first went to Brazil by boat in 1938. His experiences there and the...MINERALS arrived in Brazil for a two-month buying hip based in Governador Valadares, where I was joined...Virgem da Lapa (Virgin of the Cave), north of Governador Valadares. From a table in their warehouse I selected...flush with our cruzeiros just paid them back in Valadares. We were soon choking on their dust but kept on |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...France acquired his remarkable collection of giant quartz crystals, exhibited in the National Museum of Natural...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...CRYSTALS GIANT QUARTZ CRYSTALS UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL Cyan Magenta...Crystals GIANT QUARTZ CRYSTALS UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIA–MOSCOW |  | | Journal (issue) | | Hawthorne & W. W. Pinch Fifty-nine treasure hunts in Minas Gerais . . . . . . . . . . . . . . . . . . . . . ....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 Steger’s memoirs in this issue. The...with relatively little smoky color compared to the quartz from other Piedmont amethyst occurrences. Hundreds...a depression that would contain colorless drusy-quartz-lined vugs containing nice clusters of gemmy amethyst |  | | Journal (issue) | | Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Governador Valadares District Keith Proctor...lazuli from Asia Minor, as well as agates, rose quartz, emeralds, and amethyst were popular materials...The necessary silica is supplied in the form of quartz (Si02), which floats to the surface of the molten...because it has a lower density than the flux. As the quartz slowly dissolves at the top of the flux, the nutrients...liquid at about the same rate as a rock crystal quartz indicator. Thus, the specificgravity of these Russian |  | | Journal (article/letter/editorial) | | transparent, faceted gem stones of rose quartz from Brazil, weighing 73.50 carats and 17.50 carats respectively...supplied him. They now enhance the quartz gems. A synthetic quartz crystal of 118.8 grams was received...donated an excellent faceted green gem apatite from Brazil. A beautiful jadeite statuette, about five ROCKS...Murray Hill, New Jersey, presented a large synthetic quartz crystal weighing 467 grams to the synthetic mineral...of pink and blue tourmaline from Tiofilo Otoni, Brazil, with the Bruce fund; and a large morganite from |  | | Catalog/List | | Irelnnd golden acicular micro xls in a breccia with quartz Ix! £4 lx2£8 424 ■■ CRISTOBALITE Vechec, Slanske...■■ HAINITE Bortolan Quarry, Pocos de Caldas Minas Gerais, Small fawn fibres in syenite. Larger ones with...Laughlin Mine, Napa County California black areas in quartz with red Pyrargyrite 8mm £5 1.5cm £10 Ag Sb S ...Panasqueira, Fundao, Portugal · Orange brown mass in quartz. · 2cm £20 -!cm - - £10 - -·-·- - ·-- · -- . --...County Limerick, S,lreland White crystalline mass in quartz breccia Fluorescent green with short wave UV lx2 |  | | Journal (article/letter/editorial) | | Paulo, Rua do Lago, 562, CEP: 05508-080, São Paulo, Brazil b a r t i c l e i n f o Article history: Received...a b s t r a c t The Mantiqueira Province in SE Brazil and Uruguay is a complex Brasiliano/Pan-African...Province (MP) that extends along the SE coast of Brazil and Uruguay. Researchers have been studying the...1960s the geological knowledge of the SE coast of Brazil was substantially enhanced with the seminal works...do Sul River valley, parallel to the SE coast of Brazil. This belt, the Ribeira Fold Belt, is part of the |  | | Journal (issue) | | Collector—Part II Fify-nine treasure hunts in Minas Gerais, 1969–2005 . . . . . . . . . . . . . 207 by...field mineralogist for the Manhattan Project in Brazil in 1941, and served in the Army Signal Corp in...Collector—Part 2: Fifty-Nine Treasure Hunts in Minas Gerais, 1969–2005 Guido Steger Nestroystrasse 15 2700...been visiting mines and mineral occurrences in Brazil for 36 years, and has seen many now-famous discoveries...the gemstone mines and marketing centers of Minas Gerais, I sought first to learn about recent discoveries |  | | 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) | | appeared among nrineral dealers of Governador Valadares, Minas Gerais, ril tand among U.S. dealers. Ed...the Rio Doce (Doce River) east-south,rl Governador Valadares. The famous Sapucaia phosphate ,irtv is...jred kg scattered through the feldspar near the quartz core. ..c phosphatepods have been stockpiled near...groups to .:.rl cm, roscherite as thin coatings on quartz, and platy .'rls of tourmaline and vivianite to...micro':ngt. albite (in platy clusters), orthoclase, quartz, beryl " . . . c c r y s t a l s t o I m ) , m |  | | Book | | 523.5'1'0981 ISBN 0-8263-0543-1 2. Meteorites—Brazil. II. Title. 80-5333 © 1980 by the University of...Reis . 7.1.2. Augite-olivine achondrite . Governador Valadares. 7.1.3. Monomict pigeonite-plagioclase achondrites...Uberaba. 7.2.2. L-group chondrites . Mafra. Minas Gerais. Parana i ba. Patrimonio. Putinga. Rio Negro...Geociencias, Universidade de Sao Paulo, Sao Paulo, Brazil. Two facts regarding Brazilian stone meteorites... such as Angra dos Reis, Serra de Mage, Governador Valadares, and Ibitira, consortia were organized involving |  | | Journal (article/letter/editorial) | | The Pederneira Mine São José da Safira, Minas Gerais, Brazil Dedication This article is the culmination...Pederneira Mine ▲ ▲ São José da Safira, Minas Gerais, Brazil Daniel Trinchillo Fine Minerals International...(1999) ...................................61 Giant Quartz Pocket (2000)..........................65 Sharon...Gem Pocket (2006) . ..........................125 Quartz Finale Pocket (2006) ......................129...Tallis). Introduction The Pederneira mine in Brazil qualifies as one of the world’s greatest tourmaline |  | | Report (issue) | | = 9.42(2) X-ray Powder Pattern: Sapucaia mine, Brazil. 5.72 (10), 7.28 (9), 3.244 (6), 3.085 (6), 3.029...Sapucaia mine, Brazil; Na and K by flame photometry, recalculated after deduction of insoluble quartz and muscovite...Be2.11 (PO4 )3.90 • 6.01H2 O. Occurrence: mine, Brazil). A rare late-stage secondary mineral in a complex...(Sapucaia Association: Quartz, muscovite, variscite, frondelite (Sapucaia mine, Brazil); strengite (Roosevelt...about 50 km east-southeast of Governador Valadares, Minas Gerais, Brazil. In the USA, at the Roosevelt |  | Pecora, W. T., Switzer, George, Barbosa, A. L., Meyers, and A. T. (1950) Structure and mineralogy of the Golconda pegmatite, Minas Gerais, Brazil. American Mineralogist, 35 (9-10) 889-901 | Journal (article/letter/editorial) | | AND MINERALOGY OF THE GOLCONDA PEGMATITE, MINAS GERAIS, BRAZIL* W. T. PBcona,lGponcoSwrrznn,2 A. L. B.qnnose...granite pegmatite at the Golconda mine in Minas Gerais, Brazil, is a zoned, sheetlike mass in schist. Most...pegmatite mine, one of the oldest mica producers in Brazil, was examined and mapped in detail in 1943-45 by...increasing mica production and mica reserves in Brazil during World War II. The mineral collections made...town of Governador Valadares (formerly Figueira)-a well-known mica center in eastern Minas Gerais that has |  | | Journal (issue) | | and Anthony R. Kampf Gem Pegmatites of Minas Gerais, Brazil: Exploration, Occurrence, and Aquamarine...the northeastern section of the state of Minas Gemis, Brazil. The history of gem exploration and m i n...Te6filo Otoni-Marambaia pegmatite district of Minas Gerais. As is common with most aquamarines, the stones...gem pegmatite regions of the 20th century: Minas Gerais, Brazil. With these articles, we hope to take you...what pegmatite gems have meant historically in Brazil and the production of one very important pegmatite |  | | Journal (article/letter/editorial) | | AGE DETERMINATeION OF QUARTZ PEGMATITES IN VEINS AND BRAZIL. DJALMA GUIMAR•ES. CRITICAL ASPECTS...satisfactoryfigure for the age of the quartz deposits.in the quartz-producingareas of Brazil. They have found that in...as well as someof the depositsin the State of Minas Gerais,occurin Algonkian and Silurian (Bambui Series)...speaking,pegmatitesin later formationsturn into quartz veins, a fact suggestingpost-Bambuiand pre-Devonianage...end of paper. 100 AGE DETERMINATION OF QUARTZ VEINS IN BRAZIL. 101 This distribution appears to indicate |  | | Report (issue) | | in staurolite-grade mica schist (Sapucaia mine, Brazil); in type IIIAB iron meteorites. Association: Graftonite...almandine-spessartine, muscovite, plagioclase, quartz (Loch Quoich, Scotland); triphylite, frondelite...zircon, tourmaline, microcline, albite, quartz (Sapucaia mine, Brazil). Distribution: From near the entrance...about 50 km east-southeast of Governador Valadares, Minas Gerais, Brazil. At the Kiluli pegmatite, Rwanda...phosphate métamicte dans la pegmatite du Sapucaia (Minas Gerais). Anais da Academia brasileira de Ciências |  | | Book (volume) | | with Arkansas Quartz and polished Agates. We instantly fell in love with a clear Quartz group and bought...Co., Colorado, 43 Apatite Golconda Mine, Minas Gerais, Brazil, 13 Laghman, Nuristan, Afghanistan, 31 Panasqueira...Nigeria, 15 Medina Mine, Minas Gerais, Brazil, 36 Teofilo Otoni, Minas Gerais, Brazil, 27 Azurite (with Malachite)...Corrego do Urucum, Minas Gerais, Brazil, 29 Conselheiro Pena, Minas Gerais, Brazil, 8 Painera Mine, Virgem...Virgem Da Lapa, Brazil, 24 Phosgenite Touissit, Oujda, Morocco, 19 Phosphophyllite Unificada Mine, Cerro |
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Golconda pegmatite field, Governador Valadares, Minas Gerais, Brazil