 | | Journal (article/letter/editorial) | | (EBPP) has been evaluated on the basis of 530 K-feldspar and 550 muscovite major and trace element analyses...The EBPP is situated mainly in the State of Minas Gerais, but encompasses also parts of the States of...Cs, Zn, Li, Be, Ba versus K/Rb, Cs versus Ta/(Ta+Nb), and U, Na2O versus K/Cs for the pegmatite districts...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 |  | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | sub-types hosted in: (IA) Mafic-ultramafic rocks (Brazil, Zambia, Russia, and others); (IB) Sedimentary...sub-types hosted in: (IIA) Mafic-ultramafic rocks (Brazil, Austria); (IIB) Sedimentary rocks-black shale...ct. Insufu rough emerald extracted from the Kagem mine in 2015. Lastly, on the 2th of October, the remarkable...(“the lion elephant”) was extracted from the same mine [3]. Other giant crystals have been discovered in...emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen weighed 341 kg with 1.7 million |  | | Journal (issue) | | Claringbull, Ph.D., F.Inst.P., FGS Vice-President: R. K. Mitchell, FGA Chairman: *D. J. Callaghan, FGA Vice-chairman:..., FRSC, FGA *P G. Read, CEng., MIEE, MIERE, FGA *K. Scarratt, FGA E. Stern, FGA *C H. Winter, FGA ^Members...D., FGA D. G. Kent, FGA R Sadler, B.Sc, FGS, FGA K. Scarratt, FGA E. Stern, FGA M. Virkkunen, M.Phil...setting Gem sapphirine is being recovered from a mine about Sapphirine is derived and obtained from rocks...Sri Lanka the gem sapphirine comes from a carats. mine located near the 9th milepost along the Abstract |  | Gomes, Sylvio D., Berger, Sarah, Figueiredo e Silva, Rosaline C., Hagemann, Steffen G., Rosière, Carlos A., Banks, David A., Lobato, Lydia M., Hensler, Ana-Sophie (2018) Oxide chemistry and fluid inclusion constraints on the formation of itabirite-hosted iron ore deposits at the eastern border of the southern Espinhaço Range, Brazil. Ore Geology Reviews, 95. 821-848 doi:10.1016/j.oregeorev.2018.03.025 | Journal (article/letter/editorial) | | eastern border of the Southern Espinhaço Range, Brazil Sylvio D. Gomes, Sarah Berger, Rosaline C. Figueiredo...eastern border of the Southern Espinhaço Range, Brazil, Ore Geology Reviews (2018), doi: https://doi.org/10...eastern border of the Southern Espinhaço Range, Brazil Sylvio D. Gomesa,*, Sarah Bergerb, Rosaline C...a Carlos, 6627, Pampulha, Belo Horizonte, MG, Brazil b University of Western Australia, Centre for...southern (Almeida, 1977; Almeida et al., 2000) in Minas Gerais state (Fig. 1). The geology of QF is composed |  | Silveira Braga, Flávia Cristina, Santos, João Orestes Schneider, Rosière, Carlos Alberto, Rolim, Vassily K., Roberts, Malcolm P., Evans, Noreen J., Hagemann, Steffen G. (2020) Ediacaran-Cambrian far-field hydrothermal event in the southeast of the São Francisco Craton, Brazil: Evidence from zircon U-Pb SHRIMP, trace elements, Lu-Hf and oxygen isotopes. Lithos, 356. 105365 doi:10.1016/j.lithos.2020.105365 | Journal (article/letter/editorial) | | event in the southeast of the São Francisco Craton, Brazil: Evidence from zircon U-Pb SHRIMP, trace elements...Schneider Santos, Carlos Alberto Rosière, Vassily K. Rolim, Malcolm P. Roberts, Noreen J. Evans, Steffen...event in the southeast of the São Francisco Craton, Brazil: Evidence from zircon U-Pb SHRIMP, trace elements...event in the southeast of the São Francisco Craton, Brazil: evidence from zircon U-Pb SHRIMP, trace elements...Schneider Santosc, Carlos Alberto Rosièred, Vassily K. Rolime, Malcolm P. Robertsf, Noreen J. Evansg, Steffen |  | | Report (issue) | | and trapiche emerald Rupert Hochleitner Brazil: Minas Gerais, Bahia, Ceara, Goias and Tocantins . . ...Asia: Pakistan, Afghanistan and India .......6 0 Old Mine Emeralds . . . . . . . . . . . . . . . . . . . ...Maharajahs and Maharanis held large emeralds (see "Old Mine Emeralds" page 62). The Color of Islam Emerald...quality. It was the gift of Emperor Dom Pedro I of Brazil to the 6 th Duke of Devon- shire. Also housed...beryl, but also include bitumen, pyrite, monazite, K-feld spar, epidote, zircon and apatite (Ohnenstetter |  | | Journal (issue) | | iridescence observed in “rainbow” hematite from Minas Gerais, Brazil. 40 DNA Techniques Applied to the Identification...iridescence in metamorphic “rainbow” hematite from Brazil. The authors use electron microscopy, atomic force...colored by GR1 defects have been alluvial deposits in Brazil, Guyana, Venezuela, Zimbabwe, the Central African...never graded by GIA), and the 5.03 ct Aurora Green (Brazil), which sold at auction in 2016 for more than US...America has yielded a number of green diamonds from Brazil and Guyana (figure 7). Most show extensive surficial |  | | Journal (article/letter/editorial) | | DALSTRA† Rio Tinto Exploration Pty., Ltd., 37 Belmont Avenue, Belmont, Western Australia, Australia AND SERGIO...Doce, GAJAN, Mina de N4E, Serra dos Carajás, Pará, Brazil Abstract The genesis of banded iron formation...five continents (Fig. 1), the Carajás province in Brazil and the Hamersley province in Western Australia...orebodies in the Ukraine, the Quadrilátero Ferrífero in Brazil, and Thabazimbi in South Africa. Although not all...Carajás province The Carajás province in Central Brazil contains on the order of 18 Gt of high-grade (67% |  | | 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 (issue) | | Claringbull, Ph.D., EInst.E, FGS Vice-President: R. K. Mitchell, FGA Chairman: *D. J. Callaghan, FGA Vice-Chairman:...J. Peace, FGA *EG. Read, CEng., MIEE, MIERE, FGA *K. Scarratt, FGA E. Stern, FGA *C. H. Winter, FGA ^Members...D., FGA D. G. Kent, FGA P Sadler, B.Sc, FGS, FGA K. Scarratt, FGA E. Stern, FGA M. Virkkunen, M.Phil...natural ferric oxides. Amer. Miner., 41, 23-44. Nassau, K., 1968. On the cause of asterism in star corundum...Colony. Rep. Geol. Surv. Kenya, No. 13. Schmetzer, K., Gübelin, E., Medenbach, O., Krupp, H., 1977. Skapolith |  | | Journal (issue) | | Mitchell Honorary Fellows R.T. Liddicoat [nr., E. Miles, K. Nassau Honorary Life Members D.}. Callaghan, E.A...Kessler, G. Monnickendam, L. Music, J.B. Nelson, K. Penton, P.G. Read, 1. Roberts, R Shepherd, CH. Winter...in 1917 the deep blue beryls from the Maxixe mine in Brazil have been a source of fascination both for...sciences. Cambridge University Press, USA Schmetzer, K., 1986. Natiirliche und synthetische Rubine. E. Schweizerbart'sche...Verlagsbuchhandlung, Stuttgart, Germany Schmetzer, K., 1987. The cause of colour in blue sapphire - a discussion |  | | Journal (issue) | | Claringbull, Ph.D., F.lnst.P., FGS Vice-Presidents: R K. Mitchell, FGA A.E. Farn, FGA D.G. Kent, FGA Council...SIX APRIL 1993 Cover Picture The Hematita mine in Minas Gérais in 1987 - probably the richest alexandrite...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...nature suggested that perhaps it might be albite feldspar. Albite is biaxial and has been previously identified |  | | Report (issue) | | crystal weighed 455 kilograms. 2m: The Queen Anne mine in Zimbabwe has produced crystals up to 2 meters...evidence of dissolution, as seen in the blue beryl on feldspar from the Northern Areas, Pakistan (upper left;...from some pegmatites. This specimen, from Minas Gerais, Brazil, is housed in the Deutsches Edelstein Museum...crystals are found in soils and stream gravels in Brazil. On the other hand, at high temperatures and pressures...hydrothermal veins, it is found with quartz and feldspar. In topaz rhyolites where red beryl is found, |  | | Catalog/List | | 3 mm) octahedral uraninite crystals frozen in feldspar in a 0.7 x 1.5 cm patch ••• $25.00 (4 x 6 cm)...(2 x 1.5 x 1.5 cm) 81B06 STILPNOMELANE, Sterling Mine, Antwerp, N.Y. (a) very nice (7 x 11 cm) Botryoidal...millerite spray) ••• $20.00 81B07 CHALCOCITE, Magma Mine, Superior, Arizona. Sharp (1 mm) chalcocite crystals..."watermelon" crystal section (4 x 4.5 x 6 cm) with minor feldspar (a) ... $15.00 81B09 WHITEITE-(Mn), MnFeMg Al...Al (P0 ) (0H) 8H o, Lavra de Ilha, M.G., Brazil. Tan to pink 4 4 2 2 a roscher1te 2 2group species, etc |  | | 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) | | Alert No, 71, June 8, 1993. Hanni H.A., Schmetzer K. (1993) First results on a new fluxgrown synthetic...]own~ilof Gemmology, Vol. 20, pp. 20-33. Schmctzer K. 11987) On twinning in natural and synthetic fluxgrown...Mineralogie Monatshefte, Vol. 198 1, pp. 59-68. Scl-imetzer K., Smith C.P., Bosshart G., Medenbach 0. (1994) T w...1987 Gemstone Durability: Design to Display Wessels Mine Sugitite Three Notable Fancy-Color Diamonds The...Southern Africa Sunstone Labradorite from the Ponderosa Mine, Oregon Nontraditional Gemstone Cutting Nontransparent |  | | Journal (issue) | | Claringbull, Ph.D., F.Inst.P., FGS Vice-President: R. K. Mitchell, FGA Council of Management D.J. Callaghan...Eng., FIMM, FGA I. Thomson, FGA V.P. Watson, FGA K. Scarratt, FGA: Chief Executive R.R. Harding, B.Sc...D., FGA D. G. Kent, FGA P. Sadler, B.Sc, FGS, FGA K. Scarratt, FGA E. Stern, FGA Prof. I.Sunagawa,D.Sc...Gemology, 22, 4, 246. Treated Chalcedony. Gems Nassau, K., 1983. Gemstone Enhancement. & Co. Enhancement. Butterworth...large rubellite crystals were found in the pegmatite mine at Sakangyi. Furthermore, Bauer (Spencer transi |  | Giuliani, G., France-Lanord, C., Zimmermann, J. L., Cheilletz, A., Arboleda, C., Charoy, B., Coget, P., Fontan, F., Giard, D. (1997) Fluid Composition, δD of Channel H2O, and δ18O of Lattice Oxygen in Beryls: Genetic Implications for Brazilian, Colombian, and Afghanistani Emerald Deposits. International Geology Review, 39 (5) 400-424 doi:10.1080/00206819709465280 | Journal (article/letter/editorial) | | granitic pegmatites and greisens and emerald from Brazil, Colombia, a n d Afghanistan. An i m p o r t a...contrasting and restricted ranges of δ18O values. In Brazil, emeralds related to pegmatites have a systematic...composition of the hydrother mal fluid. Relative to Brazil, the δ18O of Colombian and Afghanistani emeralds...18O-rich sedimentary or metasedimentary rocks. In Brazil, the δD composition of channels in emerald and...1992) and emerald from the Porangatu deposit in Brazil (Fallick and Barros, 1987) and the Swat deposit |  | | Journal (issue) | | page: Rough emeralds mined by Gemfields at the Kagem mine in Zambia. (Photo courtesy of Gemfields) CONTENTS...Gemfields Provides Insights Into Emerald Operations Belmont Head Describes Firm›s Brazilian Mining Business...The New Dynamics of the Colombian Emerald Sector Mine Tour 44 22 32 In Search of Colombia’s Green Dreams...Emerald Mines Education 44 50 Education and the Mine-to-Market Story Beautifying Emeralds - The Perennial...Russia: The Geology and Gemology of the Malyshev Mine Emerald Origins 88 98 106 78 4 InColor ׀Special |  | | Journal (issue) | | Fellows: Chen Zhonghui, R.A. Howie, R.T. Liddicoat Jnr, K. Nassau Honorary Life Members: H. Bank, D.J. Callaghan...Precambrian Research, 3-18 Dahanayake, Dahanayake,K.,K.,1980. 1980.Modes Modes of ofoccurrence occurrence...pp. pp.463-535 463-535 Transactions, Schmetzer, K., K., 1999. 1999.Behandlung Behandlung natürlicher natiirlicher...from from the the Hematita Hematita mine mine in in Brazil Brazil (AL-HEMA1), (AL-HEMA1), an an alexandrite...alexandrite from from the the old old Tokowaja Tokowaja mine mine in in the the Ural Ural Mountains Mountains (AL-U/K9456) |  | | Journal (issue) | | Volume Thirty, Number Five Articles The Mex-Tex mine, Bingham, N ew M exico............................mineral localities: The Sapucaia pegmatite, Minas Gerais, B ra zil.....................................original "Sapucaia" rose quartz occurrence, Minas Gerais, B ra zil.....................................Van Pelt. Long thought to be from the "Sapucaia mine," this speci men and others (representing the first...quartz crystals) actually came from the Berilo Branco mine. See the article beginning on page 361.___________ |  | | Journal (article/letter/editorial) | | emerald mines in Colombia are becoming depleted. Brazil currently accounts for approximately 10% of world...H2O molecules and the larger alkali atoms (Cs, Rb, K) occupy the 2a sites and Na atoms occupy the smaller...samples from the Lened occurrence in Canada, the Muzo mine in Colombia, the Mohmand district in Pakistan, and...export values of emerald rough (Zwaan et al., 2005). Brazil currently accounts for approximately 10% of world...to 0.02% were of gem-quality. 89 Since then the mine has been re-opened and closed several times (Walton |  | | Journal (issue) | | COVELLITE crystal cluster, 3 cm across, From the Leonard mine, Butte, Montana. Frederick H. Pough collection;...the Butte mining camp, especially in the Kelley mine, was just full of vug holes . . . the holes, some...located in Butte, at the site of the old Orphan Girl mine. . . . So wrote a trainee miner, Jerry Dolph, concerning...an underground stope at Butte, Montana’s Kelley mine in the early 1970’s (Dolph, 1994). The wonderful...crystallized species, unusual associations, or individual mine localities. Similarly, the popular journals are |  | | Book (edition) | | MINE andtheir LOCALITIES JAN H. BERNARD AND JAROSLAV HYRSL INERALS DESCRIBED SINCE 2004 MINERALS...dist., China Fluomatromicrolite, x 25111111, Naipa mine, Mozambique Daliranite, 5111111, Zarshouran Au-As...Domafov, Czech Rep. Juangodoyite, 60111111, Santa Rosa mine, Chile Back cover photo: Ho/fertile on hematite...piment pseudomo,phs after realga,; 75 mm, Palomo mine, Pen, Page 3: Stepite on arsenic, 45 111111,Jachymov...based on large 2D fragments of PbS/SnS archetype 2.K Sulfosalts based on ID derivatives of PbS/SnS archetype |  | | Journal (issue) | | Mitchell Honorary Fellows: RA Howie, RT. Liddicoat Jnr, K. Nassau Honorary Life Members: D.J. Callaghan, E.A...of other beryllium minerals. First recorded from Brazil in 1785 (Dana, 1892; Bastos, 1969), euclase has...freely on microcline together with quartz, green feldspar, fluorite, and the other beryllium Figure 2:...Uganda, euclase was recorded in the Namapherere tin mine, Ankole. Beryl is a common minor constituent in...pegmatites mined in south-west Uganda and at Kihandu mine, an unusual form of beryl with acute bipyramidal |
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