 | | Journal (issue) | | a sulfide assemblage (pyrrhotite, galena, and sphalerite). This sulfide assemblage makes it easy to distinguish...occasionally recovered by hobbyist collectors from the mine dumps. D uring the late 19th and early 20th centuries...a Byrud emerald in an antique jewelry piece. The mine is located on the shore of Lake Mjøsa, near Minnesund...vanadium-rich, as is also the case for emeralds from Colombia and some (or all) emeralds from a number of other...assets sold to the Cornish Development Co. Ltd. The mine was subsequently abandoned in 1909 (Nordrum and |  | | Book | | tourmaline crystals from William Larson’s Stuart Mine in the Pala Mountains, California (USA). Next to...from the hydrothermal deposits of the Muzo Mine, Colombia. Collection: Mineralogical Institute of the...morganite and white quartz from the pegmatite of Queen Mine, San Diego County, California (USA). Collection:...this ornamental gem owes its name. It comes from a mine near Ylamaa, Finland. Museum a. d. Felsenkirche...emerald from the argillaceous limestone schists of Colombia (Muzo, Chivor) is also of hydrothermal origin |  | | Journal (issue) | | , Fisher, M., 1987. The emeralds of the Belmont Mine, Minas Gerais, Brazil. J. Gemm., 20(7/ 8), 446-56...author is grateful to Prof. N. M. Vashi, Head, Department of Geology, MS University of Baroda, for providing...in a large oval motif on a flat bandeau in the Condé museum at the Chateau de Chantilly. PG.R. BANCROFT...20, 1, 13-24, 16 figs (11 in colour). The Kelly mine, no longer in operation, was celebrated for its...are illustrated. The geology and mineralogy of the mine are discussed. M.O'D. GRAESER, S., 1989. Phenakit |  | | Book | | Sphene 178 Prehnite Spectrolite (Labradorite) Sphalerite (Blende) 178 204 205 Spessartite 178 Prasiolite...of Elizabeth of Austria by Francois Clouet Musée Condé, Chantilly. Photo: Lauros-Giraudon Eighteenth-century...minerals were densely con- centrated. This type of mine was very at- tractive, since it avoided the need...diamonds cut, a 969.80-carat piece, found in the Dimico mine in Sierra Leone (the Star of Sierra Leone, which...Institution in Washington in 1958. Distribution: From the Mine to the Public The distribution of rough diamonds |  | | Book | | 42 44 46 48 50 52 58 60 62 GEMSTONES Pyrite Sphalerite Stuart Sapphire Sapphire Danish ruby parure Ruby...Examples of sulphides include pyrite, marcasite, and sphalerite. Minerals of the oxide group consist of oxygen...colour caused by iron and natural radiation Sphalerite rough Silicates All silicates consist of silicon...The highest volume of fine emeralds comes from Colombia, while Madagascar is richest in sapphires. Diamond...65 per cent of the world’s diamond supply Colombia Colombia produces around 70 per cent of the world’s |  | | Journal (issue) | | crystal had been found 15 years earlier in the Maxixe mine. This beryl had a deep blue colour, which faded...location of the Maxixe mine in Minas Gerais, Brazil, and state that the mine was closed when the loss...corporate-membership.aspx or contact the Membership Department on 020 7404 3334 email membership@gem-a.com ...trapiche pattern most commonly seen are emeralds from Colombia and rubies from Mong Hsu, Myanmar (Nassau and...trapiche tourmalines originate from the Kavungu mine near Page 152 the small village of Jivunda, southwest |  | | Book | | SMITHSONIAN CURATOR Dr. Jeffrey E. Post, Chairman, Department of Mineral Sciences and Curator, National Gem...42 44 46 48 50 52 58 60 62 GEMSTONES Pyrite Sphalerite Stuart Sapphire Sapphire Danish ruby parure Ruby...Examples of sulfides include pyrite, marcasite, and sphalerite. Minerals of the oxide group consist of oxygen...Violet color caused by iron and natural radiation Sphalerite rough Silicates All silicates consist of silicon...The highest volume of fine emeralds comes from Colombia, while Madagascar is richest in sapphires. Diamond |  | | Book | | Godehard Lenzen Lecturer, Royal School of Mines, Department of Industrial Mining, University of London DGemG...Bijouterie, Joaillerie, Orfévrerie, Paris Head, Department of Geological Mining, Bureau de Recherches géologiques...University of Stellenbosch Director, International Department, Unicorn Industries DPD Ltd., Great Britain ...Enterprise H. Allen 125 125 Tanzania The Williamson Mine 127 127 129 130 131 132 136 The Creation of La...Triangle” of Minas Gerais Diamantina The Tejucana Mine H. Allen Zaire R. Maillard Brazil 180 180 182 |  | | Journal (article/letter/editorial) | | deposits. These include the worldclass Serra Grande mine, in the Crixás greenstone belt (≤7 Moz Au; AngloGold...and Zona Superior orebodies of the Serra Grande Mine [95,116]. At the Zona Superior orebody, massive...mineralization controlled by isoclinal F2 folds in the Pilar mine [120]. Abbreviations correspond to Ank: ankerite...pyrrhotite, Asp: arsenopyrite, Mo: molybdenite, Sph: sphalerite, Te: tellurium, Bi: bismuth, Bn: bornite, Au:...Galotti Neto, L.; Martins, M.C.; Carvalho, M.N.; Condé, V.C. Geologia da porção norte do greenstone belt |  | | Journal (issue) | | a necessity at all levels of the trade, from the mine to the consumer. To that end, much has been written...practices for the 50 states and the District of Colombia is available in the Gems & Gemology Data Depository...these emerald crystals from the Santa Terezinha mine in Brazil, even though this material may be treated...She contacted the JVC, the FTC, the New York Department of Consumer Affairs, the New York State Attorney...Rapaport Diamond Report (Parker, 1998a). When the Department of Consumer Affairs contacted Almod in response |  | | Journal (issue) | | Gray-to-Blue-to-Violet Hydrogen-Rich Diamonds from The Argyle Mine, Australia Carolyn H. van der Bogert, Christopher...and Pegmatology (MP 2) Research Group in the Department of Earth and Environmental Sciences at the University...is a scientific research technologist in the Department of Earth and Environmental Sciences at the University...speculated that the diamond came from the Kollur mine near Golconda. It was cut to preserve weight at...(MNHN) in Paris, and consulting professor at the Department of Geological and Environmental Sciences, Stanford |  | | Report (issue) | | Activities of the Coeur d’Alene Mining District Central Mine Rescue Station during 1939, by James Wilson LOSESMiley...Importance of Mining in Idaho Modern Air System, Sunshine Mine TABLE OF 5 d’Alene Mining District 328 829...829 329 ILLUSTRATIONS ANACOndaneOppere Mines Condé sett iL ne eee ee eee ee 331 Bunker Hill & Sullivan...Co.: Hydro-Electric Plant, 250 H. P.: Lone Pine Mine Idaho: Reckeationale Ma Clutiedinn.. omen sss. ...GCUAYKSSYe) IDSISTy en tee se ero re ere eee oer 332, 333 Mine Rescue: INVER CT Ll etOT Geese ere eh a oeeeh ceca |  | | Book (edition) | | 519 viii FOREWORD by Professor S. Tolansky, Department of Physics, Royal Holloway College (University...like to thank the General Mines Managers of every mine I have visited, who were unfailingly friendly and...1.3. The Regent diamond, from the Indian Partial mine. It was once in England and was known as the Pitt...to be part of the Blue Tavernier from the Kollur mine in India, brought to Europe by Tavernier after he...616 ct. octahedron, was found in the Dutoitspan mine, Kimberley, on 17th April 1974, where many relatively |  | | Book | | Science Board of Advisers Andrew Chamberlain, Department of Archaeology and Prehistory, University of...British Geological Survey Art Palmer, Earth Science Department, State University of New York Trevor Shaw, Karst...Boris Sket, Department of Biology, University of Ljubljana, Slovenia Tony Waltham, Department of Civil Engineering...Paul Williams, Department of Geography, University of Auckland Paul Wood, Department of Geography, Loughborough...state-of-the-art equipment; the ability to call out cave, mine, and other specialist rescue teams, and to transport |  | | Book (edition) | | directly from Elsevier’s Science & Technology Rights Department in Oxford, UK: phone: (+44) 1865 843830, fax:...HORTON H. HOBBS III KAZIMIERZ KOWALSKI Missouri Department of Conservation Wittenberg University Polish...Jr. Virginia Speleological Survey and Virginia Department of Mines, Minerals and Energy Saltpetre Mining...BCCS in a unique agreement with the Virginia Department of Transportation, which owns the entrance. ...entrance into the Historic Section or saltpeter mine on the left and the Main Section on the right. Here |  | | Report (volume) | | Overview Harald Hiesinger and James W. Head III Department of Geological Sciences Brown University Box 1846...Fe2TiO4 inverse (TiFe2O4) Sulfides troilite FeS sphalerite ZnS wurtzite ZnS see Bogatikov et al. (2001)...Herpers U, Schiekel T, Sudbrock F, Holmqvist B, Condé H, Malmborg P, Suter M, Dittrich-Hannen B, Kubik...developed by Sviatoslavsky (1992). This system would mine its way through the lunar regolith on normally parallel...point on the Moon. 4.3.3. Transportation. If the mine is separated from the processing plant by a significant |
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