 | | Journal (article/letter/editorial) | | The EBPP is situated mainly in the State of Minas Gerais, but encompasses also parts of the States of...Universidade Federal de Minas Gerais, Av. AntoÃnio Carlos 6277, 31 000 Belo Horizonte MG, Brazil the context of...Argentina, (2) the north-eastern or Borborema in Brazil, and (3) the Eastern Brazilian. A description of...pegmatites of the north-eastern Pegmatite Province of Brazil and their geochemistry have been studied by Beurlen...Province (EBPP) is situated mainly in the State of Minas Gerais but also encompasses the southern part of the |  | | Book | | 1982 Jules Roger Sauer ” Foreword For years Brazil has been the major producer of colored stones in...metamorphic rocks, the variety of gem deposits in Brazil is almost infinite. In addition to the mineral...assemblage one might expect from pegmatite dikes, Brazil also produces a very significant output of diamonds...written in English, and beautifully illustrated. “Brazil, Paradise of Gemstones’, by Jules Roger Sauer,...the Cruzeiro tourmaline and mica mine and the Jacobina amethyst mine. He owns several other mines as well |  | | 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 SOFIA–MOSCOW 2004 3 Cyan Magenta Yellow Black...NATIONAL MUSEUM IN SOFIA 66 OTHER COLLECTIONS OF MINE IN BULGARIA 71 COLLECTIONS IN OTHER CITIES AROUND |  | | Journal (article/letter/editorial) | | Alabama 36849 cookrob@auburn.edu Euclase La Marina Mine, Municipio de Pauna Boyacá, Colombia E uclase...most glamorous of the beryllium minerals after beryl and chrysoberyl. Exceptional euclase specimens appeared... Euclase crystal group, 11.2 cm tall, La Marina mine, Municipio de Pauna, Boyacá, Colombia. Scott Rudolph...lack modern verification, include the Lost River mine on the Seward Peninsula, Alaska; the Fisher prospect...in Topsham, Sagadahoc County, Maine; the Chandler mine at Raymond, Rockingham County, New Hampshire; unspecified |  | | Journal (article/letter/editorial) | | DETERMINATeION OF QUARTZ PEGMATITES IN VEINS AND BRAZIL. DJALMA GUIMAR•ES. CRITICAL ASPECTS OF AGE...quartz deposits.in the quartz-producingareas of Brazil. They have found that in the northeasternand m...as well as someof the depositsin the State of Minas Gerais,occurin Algonkian and Silurian (Bambui Series)...paper. 100 AGE DETERMINATION OF QUARTZ VEINS IN BRAZIL. 101 This distribution appears to indicate a...the less deeply buried quartz veins of Central Minas Gerais, Bahia and Southern Goyaz, which occur in upper |  | | 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 | | 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) | | BEISPIEL DES PEGMATITDISTRIKTS VON ARA‚UAI (MINAS GERAIS) von G. Morteani & C. Preinfalk Lehrstuhl fŸr...die šstliche Pegmatitprovinz in den Staaten Minas Gerais und SŸdbahia. Sie wurde als solche von PAIVA...K/Ar-Altersbestimmungen an Muskoviten aus den Pegmatiten von Cachoeira und Maxixe im Gebiet von Ara•ua’ ergeben ein Brasiliano...Pegmatite von Barreiro I und II, Xuxa, Maxixe und Cachoeira werden wegen ihres ungewšhnlich hohen Spodumengehaltes...ãDepartamento de Geoci•ncias der Universidade Federal de Minas GeraisÒ in Belo Horizonte hat. Wir danken Herrn |  | | Journal (article/letter/editorial) | | University] at 06:28 19 January 2015 Minas Gerais and Bahia, Brazil, and Takovaya, Russia W e hold in...Summit and as an accessory mineral at the old garnet mine at Wilmot, New Hampshire. Chrysoberyl was recovered...Bahia, Brazil. belonging to mineral dealer Russ Behnke. B: A 1.1-cm crystal from Minas Gerais, Brazil, in...to 7 x 11 cm have been found at the Wisdom Ranch beryl prospect, Larimer County. Elsewhere in the western...kilograms are reported from the Scott Rose Quartz mine. Other localities in the district from which good |  | Kesler, Stephen E., Gruber, Paul W., Medina, Pablo A., Keoleian, Gregory A., Everson, Mark P., Wallington, Timothy J. (2012) Global lithium resources: Relative importance of pegmatite, brine and other deposits. Ore Geology Reviews, 48. 55-69 doi:10.1016/j.oregeorev.2012.05.006 | Journal (article/letter/editorial) | | solutions, including the large Jadar (Serbia) and King Valley (USA) deposits, have estimated resources of about...beryllium and lithium and include both spodumene and beryl-spodumene types, both of which are commonly zoned...Araçuaí and São João del Rei districts of Minas Gerais province, Brazil. Pegmatites in the São João del Rei...the Itinga field that contains lithium-bearing pegmatites at the Cachoeira (CBL) mine. The CBL mine contains...in northeastern Brazil, as well as the Governador Valadores district in Minas Gerais state (Afgouni and |  | | Journal (issue) | | SIX APRIL 1993 Cover Picture The Hematita mine in Minas Gérais in 1987 - probably the richest alexandrite...foreground, the soil profile in the centre and the valley confluence in the background. (See 'The location...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil' pp. 333-54) ISSN: 0022-1252 F.G.A. your key...to be able to deterAlthough it is very important mine if if a gem is natural or synthetic, and treated...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil JacquesCassedanne, Cassedanne, D.Sc.,* Maurice |  | | Report (issue) | | placers. Association: Quartz, muscovite, albite, beryl, columbite, tourmaline, topaz, kyanite, staurolite...Notable localities include: from many places in Brazil, with exceptional crystals from Tancredo, Itaguaçu... Teófilo Otoni, Minas Gerais; at Campo Formoso, Teixeira de Freitas, and Cachoeira, Bahia. From Maršı́kov...golden, in allusion to the mineral’s color, and beryl. References: (1) Palache, C., H. Berman, and C |  | | Journal (issue) | | Moore Recent discoveries of hydroxylherderite in Minas Gerais ..............................................typically abraded specimens you’ve found in the old mine dumps. And you’ve probably looked long and hard...Everyone has heard repeated warnings about entering old mine workings. But, face it, those deep, open shafts...commonality: They can be very dangerous. Each year mine rescue specialists and conventional search and rescue...Statistically, shafts are the most dangerous part of any mine; 90 percent of all accidents and entrapments in |  | | Journal (issue) | | ............... 93 by A. Falster The Rock Candy mine, British Columbia ................................COVER: ELBAITE on albite, from the Jonas mine, Minas Gerais, Brazil. Keith Proctor specimen; photo by Harold...Rio de Janeiro, Brazil INTRODUCTION Recently, a small pegmatite body in Minas Gerais has produced magnificent...are new to Brazil and very good specimens are still recoverable from the dumps or in the mine work ings...east-southeast from Governador Valadares, near the Rio Doce Valley and to the west of the famous Urucum pegmatite |  | | Book | | MINES AND MINERALS IN BRAZIL --= ··--· ··- ·-·=- MINES AND MINERALS IN BRAZIL J OSIAS LEAO (ECONOMIC...regarding water power and industry of electr·icity in Brazil were specially prepared at the Division of Waters........ 189 SUMMARY OF THE MINERAL RESERVES OF BRAZIL..... . ... ....... . .. 199 STATISTICAL TABLES...practically untouched, the mineral reserves of Brazil have already been a source of wealth to many and...without the discovery of the precious metals in Brazil the existence of the modern economic man would |  | | Journal (article/letter/editorial) | | inclusion in vein. FIGURE 3. GARGAS MINE, NEAR COKINTO, MINAS GERAIS Wall rock is decomposed Bambui shale...PEDRO MINE, CRISTALINA, GOIAZ Wall rock is sandstone. Photo by E. II. Payne. Fir.uHi-: 5. Juiz MINE, FAZHNDA...FAZHNDA CAPAO, MINAS GERAIS Pile of well-formed, but milky, crystals from vugs in sandstone. Photo by...COMB QUARTZ In sandstone at edge of pipe. ALF.GKK MINE, BAIIIA Outcrop Map of Onca-Pacu Crystal...where p^^KJgtj accurately located . Open cuta and mine facet. M,n* dumps. Contour interval IS m»t»r« A»»um»d |  | | Journal (issue) | | Foote also made several collecting visits to the mine in 1890-1891, and brought back many good specimens...chemist and physicist). In 1895 Niven purchased the mine from its owner, on behalf of Thomas Edison. In the...dozen mines were opened, one of which (the Mariposa mine) produced a wider variety of mercury minerals than...Morgenstern photo. Calcite, 5.8 cm, from the Mariposa mine, Terlingua; Roh Lavinsky (The Arkenstone) specimen...Calomel crystals on terlinguaite, 3 mm, Mariposa mine, Terlingua. Celestine, 4.5 cm, Burnet, Burnet County; |  | | 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) | | Alexandrite from the Pegmatite Districts of Minas Gerais, Brazil Keith Proctor 33 Faceting Large Gemstones...alexandrites near the town of Hematita in Minas Gerais, Brazil; in less than three months in 1987, more... , l beryl (seefigure 2),is colored by Fe3+ as it interacts with other atoms in the beryl structure...Gems, Inc. Photo 0 Tino Hammid. a-, - - in the beryl structure. The color results from light absorbed...induced artificially by the irradiation of blue beryl (see Fritsch and Rossman, 1987). Usually oxygen |  | | Journal (article/letter/editorial) | | Californiaat Los Angeles,California. Aasrnacr The beryl-tantalite pegmatites of northeasternBrazil carry...lithiophilite. Lepidolite with minor microlite, beryl and tantalite, are primary accessory minerals Brazilianite...phosphate minerals of the beryl-tantalite pegmatites of northeastern Brazil. These pegmatites have been...sourceof beryllium, tantalum and sometimestin. The beryl-tantalite pegmatites may be grouped roughly into...MURDOCH areas: the Picui-Parelhas, Quixeramobin-Cachoeira and CascavelCristais regions, the first two of |  | | Report (issue) | | Igneous Rocks of the Quadrilatero Ferrifero, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-B...the Departmento Nacional da Producao Mineral of Brazil under the auspices oj the Agency for International...Ferrifero, Minas Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRlFERO, MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-B Prepared in cooperation with the Departmento...Departmento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International Development |  | | Book | | Books Edited by Peter G. Read Amber Helen Fraquet Beryl John Sinkankas Corundum Richard W. Hughes Garnet...Egypt 132 Argentina 132 Australia 133 Austria 135 Brazil 135 Bulgaria 155 Canada 156 Commonwealth of Independent...familiarity with Brazil and the importance of the 'Imperial' topaz deposits at Ouro Preto, Brazil, in the world...of Beryl by Sinkankas and Read in the Butterworth-Heinemann Gem Books series. Because both beryl and...assumed importance) in the trade of deposits in Brazil and the former USSR, particularly those of pink |  | | Report (volume) | | Pernambuco, Recife, Brazil J. S. BETTENCOURT Universidade de Sao Paulo, Brazil C. P. DE CAMPOS Lud...FERREIRA Federal University of Pernambuco, Recife, Brazil 2011 Published by The Geological Society London...(Iran), Asia (Japan and China) and South America (Brazil and Argentina) and spanning rocks from Palaeoproterozoic...–Cambrian granitic magmatism in the Araçuaı́ orogen (Brazil), the Eastern Brazilian Pegmatite Province and...7852, Cidade Universitaria, 50670-000 Recife, PE, Brazil 2 Institute of Geosciences, University of São |  | | Journal (issue) | | belonging rather to the a q u a m a r i n e variety of beryl than to emerald. Despite these anomalies, we were...found by the late Dr. J o h n Williamson at his mine at M w a d u i in Tanganyika and weighed 54 ct in...diamonds in the brooch came from the Williamson mine. There is a two-prong spring fastening and the stem...4-64 ct. „ 12-40 ct. 311 EUCLASE FROM MINAS GERAIS, BRAZIL By FRANCISCO MULLER U BASTOS, F.G.A....L a short time ago, the existence of euclase in Brazil was restricted to the well-known mineralogical |  | | Journal (issue) | | Diego County. He attended high school in Spring Valley, California, and in 1942 received a Bachelor of...cat's-eyes Treated jadeite bead necklace Emeralds from Brazil Famous diamond Pink conch pearl Color-change sapphire...drilling of diamonds Treated pink diamonds Maxixe blue beryl Gilson synthetic opal Yellow conch pearl Taaffeite... the laboratory staff was shown some dark blue beryl that Crowningshield and Nassau were able to confirm...properties as the so-called Maxixe beryl, a material first found in 1917 in Brazil that faded on exposure to sunlight |
|
