 | Sorokina, Elena, Rassomakhin, Mikhail, Nikandrov, Sergey, Karampelas, Stefanos, Kononkova, Nataliya, Nikolaev, Anatoliy, Anosova, Maria, Somsikova, Alina, Kostitsyn, Yuriy, Kotlyarov, Vasiliy (2019) Origin of Blue Sapphire in Newly Discovered Spinel–Chlorite–Muscovite Rocks within Meta-Ultramafites of Ilmen Mountains, South Urals of Russia: Evidence from Mineralogy, Geochemistry, Rb-Sr and Sm-Nd Isotopic Data. Minerals, 9 (1) 36 doi:10.3390/min9010036 | Journal (article/letter/editorial) | | minerals Article Origin of Blue Sapphire in Newly Discovered Spinel–Chlorite–Muscovite Rocks within...January 2019 Abstract: Blue sapphire of gem quality was recently discovered in s...were found in the assemblage with the blue sapphire. These sapphire-bearing rocks are enriched in LREE and...Ilmenogorsky alkaline complex. 87 Sr/86 Sr ratios in the sapphire-bearing rocks varied from 0.7088 ± 0.000004 (2σ)...Ma was yielded for the sapphire-bearing rocks and associated muscovite. The blue sapphires are translucent |  | | Book | | Kostitsyn and Vasiliy A. Kotlyarov Origin of Blue Sapphire in Newly Discovered Spinel–Chlorite–Muscovite...Nikolaev, Jasper Berndt and Wolfgang Hofmeister Corundum Anorthosites-Kyshtymites from the South Urals...Fallick, Maria Tsortanidis and Andreas Lampridis Gem Corundum Deposits of Greece: Geology, Mineralogy and Genesis... Russia (Ural mountains), Zambia (Kafubu) and Zimbabwe (Sandawana)). Their study demonstrates how these...Rubies and sapphires are coloured gem varieties of corundum and can be found in various places around the |  | Filina, Maria I., Sorokina, Elena S., Botcharnikov, Roman, Karampelas, Stefanos, Rassomakhin, Mikhail A., Kononkova, Natalia N., Nikolaev, Anatoly G., Berndt, Jasper, Hofmeister, Wolfgang (2019) Corundum Anorthosites-Kyshtymites from the South Urals, Russia: A Combined Mineralogical, Geochemical, and U-Pb Zircon Geochronological Study. Minerals, 9 (4) 234 doi:10.3390/min9040234 | Journal (article/letter/editorial) | | minerals Article Corundum Anorthosites-Kyshtymites from the South Urals, Russia: A Combined Mineralogical... Abstract: Kyshtymites are the unique corundum-blue sapphire-bearing variety of anorthosites of debatable...Russia. Their mineral association includes corundum-sapphire, plagioclase (An61–93 ), muscovite, clinochlore...cannot provide an unambiguous determination of sapphire origin. If it is true and zircons can be used...event at 290–330 Ma as recorded in zircon and sapphire zoning. On the other hand, Ti-in-zircon thermometer |  | | Journal (article/letter/editorial) | | 30 years of dedicated service to EJM Origin of corundum–tourmaline–phlogopite rocks from Badakhshan, northeastern...Afghanistan: a new type of metasomatism associated with sapphire formation Barbara L. DUTROW1,*, Darrell J. HENRY1...petrologically and mineralogically important. The corundum (cor)–tourmaline (tur)–phlogopite rocks of the...processes that may result in the formation of blue sapphire. The rocks are mostly comprised of two texturally...partially replacing corundum and having similar compositions to the earlier generation. Corundum crystals develop |  | | Book | | interest in gemstones. Cover illustration: A ruby, sapphire, emerald, citrine and diamond clip, mounted by...temperature below its melting point; the rutile in star corundum precipitates out in star-like rays when the crystal...to approximately 1500°C (the melting point of corundum is 2037°C). arborescent with a branching, tree-like... appearing on the gem market in 1967, is a fine blue transparent variety of a mineral which had previously...emerald require a source of chromium; without it the corundum and beryl minerals, of which ruby and emerald | | | Book | | temperature below its melting point; the rutile in star corundum precipitates out in star-like rays when the crystal...to approximately 1500°C (the melting point of corundum is 2037°C). arborescent with a branch#lg, tree-like... appearing on the gem market in 1967, is a fine blue transparent variety of a mineral which had previously...emerald require a source of chromium; without it the corundum and beryl minerals, of which ruby and emerald...formed in this type of rock. The ruby comes from corundum derived from clay impurities in the original limestone |  | | Journal (issue) | | contribution to the distinguishing characteristics of sapphire from Kashmir Dr H. Hanni, FGA H.A.A. Hänniy, FGA...was undertaken to contribute to the knowledge of sapphire from Kashmir, and over 50 cut stones were studied...reports is discussed. Introduction Sapphire, the blue variety of corundum, is produced from numerous deposits...deposits distributed worldwide. The term Kashmir Sapphire ,is js used to denote the origin of a stone from...also seem to be the case of the sapphire deposits of Kashmir. Sapphire deposits can be classified classified |  | | Journal (article/letter/editorial) | | there are two official state gemstones: agate and sapphire. An extensive body of gem and mineral literature...Figure 1. Postcard view showing the Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS...at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many fine crystal...pegmatites of Jefferson County, and the Snowbird mine in Mineral County continue to be productive sources...fine-grained masses) (Perry 1948). Birds Nest graphite mine, Ruby Mountins, sec. 29, T. 8 S., R. 7 W. Mined |  | | Journal (issue) | | North-West Branch: S. Hill, F.G.A. South Yorkshire & District Branch: J. I. Reynolds, F.G.A. Examiners: E. A...needles, spicules, daggers, blades, rods, bars, corundum host. In a few cases the metallic pyramids or...of metallic amination. The parcel included red, blue and inclusions could prove, in conjunction conjunction...carats) synthetic nature of a doubtful doubtful corundum. Although together with 12 faceted stones (five...has dealt exclusively with Chatham sapphires, four blue sapphires and three rubies). stones, it is reasonable |  | | Book | | - by richard w. hughes I - ,=: CJ? UBY & SAPPHIRE is a journey into one of mankind's most fascinating...than yawns is always a scarce item. But Ruby & Sapphire is just such a book-a rare combination of face...fun, the pertinent and che peculiar. Open Ruby & Sapphire and you seep into a secret world where, with each...ascend to the lofty snows of Kashmir, home of storied blue-velvet sapphires. These are but a few of the amazing...amazing and colorful tales within. Bur Ruby & Sapphire is also 1nuch more. T he product of over 15 years |  | | Report (issue) | | BULLETIN No. 2 A Preliminary Report on the Corundum DEPOSITS OF GEORGIA BY FRANCIS P. KING Assistant...Geologist BULLETIN No, 2 A PRELIMINARY REPORT Corundum Deposits or GEORGIA FRANCIS P. KINO Assistant...OF CORUNDUM 9 9 Early History History of Corundum in the Eastern Hemisphere History of Corundum in...Nomenclature of Corundum CHAPTER VARIETIES OF . . . . 11 . 13 21 II. CORUNDUM 23 23 Introductory...Introductory Remarks Sapphire Corundum Emery Physical Properties Artificial Production of Corundum CHAPTER 24 |  | | Journal (issue) | | TABLE OF CONTENTS FEATURE ARTICLES The Coscuez Mine: A Major Source of Colombian Emeralds Ron Ringsmd...known, emerald mines in Colombia is the Coscuez mine. The 14.52-ct emeraldillustrated here shows the...locality, which lies only 10 k m from the famous Muzo mine. Ron Ringsrud's articlein this issue takes a comprehensivelook...COSCUEZ MINE: A MAJOR SOURCE OF COLOMBIAN EMERALDS By Ron Ringsrud The Muzo emerald district, i n Boyacd...Colombia, contains several mines. Although the Muzo mine i s undoubtedly the best known, the Coscuezmineis |  | | Journal (issue) | | INSTITUTE OF AMERICA Low-Temperature Heating of Pink Sapphire from Madagascar Rose-Cut Colored Stones from the...Fluorescence Characteristics of Blue Amber Mineral Inclusions in Vietnamese Sapphire Winter 2020 VOLUME 56...Colored Stones from the Baroque Era, Separating Blue Amber Localities, and More… Duncan Pay FEATURE...Cologne. p. 470 484 Fluorescence Characteristics of Blue Amber from the Dominican Republic, Mexico, and Myanmar...main geographic localities for blue amber, which shows very strong blue fluorescence under sunlight or |  | | Journal (issue) | | ARTICLES An Update on Imperial Topaz from the Capio Mine, Minas Gerais, Brazil Daniel A. Sauer, Alice S....centuries. Today, the Capiio mine is one of the most productive in the region. This mine and the superb topazes...Shane F. McClure-on Brazil's Cap50 Imperial topaz mine-is the type of locality project he would have pursued...Alice S. Keller, and Shane F. McClure T h e Capiio mine is one of the oldest and most productive fully mechanized...Mining Company, for the invitation to visit the mine and for providing information. Constantino Psomopoulos |  | | Book (volume) | | W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY...banks of Mason Cr.⎯fossils; d Coal City, on area mine dumps from sedimentary overburden⎯oval concretions...States EAST BROOKLYN (SE of Gardner), area coal mine dumps⎯Marcasite, Pyrite. HANCOCK COUNTY DALLAS...drift deposits⎯agate, jasper, geodes (containing blue gray chalcedony); d (a) S of the Keokuk bridge,...Locality S of Hwy. 96 (see map next page) ⎯geodes (with blue and pink chalcedony); f 4 mi. E on Hwy. 96, S on |  | | Book (volume) | | W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY...banks of Mason Cr.⎯fossils; d Coal City, on area mine dumps from sedimentary overburden⎯oval concretions...States EAST BROOKLYN (SE of Gardner), area coal mine dumps⎯Marcasite, Pyrite. HANCOCK COUNTY DALLAS...drift deposits⎯agate, jasper, geodes (containing blue gray chalcedony); d (a) S of the Keokuk bridge,...Locality S of Hwy. 96 (see map next page) ⎯geodes (with blue and pink chalcedony); f 4 mi. E on Hwy. 96, S on |  | | Book (edition) | | Diamond II. - 105 Descriptive Portion . Corundum and Sapphire XIV. " ' - - Precious Stones are Chemical...Kimberley Diamond Mine at Kimberley, South Africa - IV. {a) Crystal of Diamond in the “ Blue Ground (&)...Burma (^) Sapphire set in a PIemisphere of Rock-crystal V. “ Jubilee ” and “ Hope Blue ’* 5* 124...gems, whose horizon is limited to diamond, ruby, sapphire, emerald, and opal, really sees no more in them...stone. During the past thirty years crystallized corundum of fine gem quality and with a wide range of attractive |  | | Journal (article/letter/editorial) | | minerals Article Microscopic Blue Sapphire in Nelsonite from the Western Adirondack Mountains of New...Microscopic, non-gem quality, grains of blue sapphire (corundum) have been identified in a small (1–2 cm...Leyden, NY (western Adirondack Highlands). The sapphire location is 250 m NE of the Port Leyden nelsonite...pleochroism, and hexagonal oscillatory zoning (from deep blue to clear). Electron microprobe analysis shows comparable...levels of Fe in both clear (0.71–0.75 wt. %) and blue (0.38–0.77 wt. %) portions of grains, but clear |  | | | | surrounded ce ne white calcite, from!iheBluebell Mine; Riondel, Digitized by the Internet Archive...carbonate, borate, and phosphate groups are included. Corundum, spinel, cuprite, rutile, cassiterite, calcite...fluorite, 5 apatite, 6 feldspar, 7 quartz, 8 topaz, 9 corundum, 10 diamond. For field identification it is sufficient...interest that on an absolute scale of hardness corundum is actually two thousand times harder to scratch...Moderate (Mohs 214 - 514) ll Black | covellite (dark blue, black), p. 36 | chalcopyrite (brassy yellow), |  | | Book (volume) | | far W as Crawford and Harrisonchalcedony (some blue). CRAWFORD: N, in breaks of the White R. reached...depositchert. 285 Nebraska GAGE COUNTY WYMORE (and Blue Springs): all regional gravel pits and quarriesCalcite...mi., quarry on E bank of the Blue R.geodes (lined with Quartz or rare blue Celestite); SW of Holmesville...Holmesville, quarry on the Blue R.geodes, flint, fossils. JEFFERSON COUNTY FAIRBURY, regional gravel pits and... 2 mi. E of Angora Hill on ranch rd., abandoned mine dumpfluorescent moss opal nodules (in limestone |  | | Book (edition) | | Most Valuable Jewel— And Star Sapphires Chapter Sapphire, Too— Fancy Sapphires- and Star Rubies— Spinel...native, sifting pebbles in an in Indian diamond mine, found one of the world's most famous diamonds....decided to smuggle would be rich it out of the mine. and would never again need to he could If ...cloth around guard at the gate. he was out of the mine, the where he hoped for the nearest port city... its 1483. thirty-four ingredients emerald, sapphire, topaz, pearl, garnet, ruby, amber and One |  | | Journal (issue) | | Spinel ‘Star of David’ Pattern and Macrosteps on Corundum Crystals Fluorcarletonite, a New Gem Material...Moissanite with the Reflectivity of Diamond | Black Sapphire Melee as a Black Diamond Imitation | A Convincing...Diamond Imitation Manufactured from Topaz | Basaltic Sapphire Heated with Pressure Cover photo: Demantoid has...Pattern and Presence of Macrosteps on Ruby and Sapphire Crystals from Aappaluttoq, Greenland 364 By...Morlot and Vincent Pardieu Fluorcarletonite—A New Blue Gem Material 376 By Ekaterina Kaneva, Tatiana |  | | Journal (article/letter/editorial) | | minerals and staurolite supply and use. . . . . . Corundum and spinel . . . . . . . . . . . . . . . . . ...mineralogy of corundum and spinel minerals . . . . 48.2. Magmatic deposits of corundum and spinel minerals...deposits of corundum and spinel minerals . . . . . . 48.4. Metamorphic deposits of corundum and spinel...spinel minerals . . . . . . 48.5. Corundum and spinel supply and use . . . . . . . . . . . . . . . Diamond...Cordierite/iolite Cordylite-(Ce) Coronadite Corundum, sapphire, ruby, padparadscha Corvusite Covellite Crandallite | | | Journal (article/letter/editorial) | | minerals and staurolite supply and use. . . . . . Corundum and spinel . . . . . . . . . . . . . . . . . ...mineralogy of corundum and spinel minerals . . . . 48.2. Magmatic deposits of corundum and spinel minerals...deposits of corundum and spinel minerals . . . . . . 48.4. Metamorphic deposits of corundum and spinel...spinel minerals . . . . . . 48.5. Corundum and spinel supply and use . . . . . . . . . . . . . . . Diamond...Cordierite/iolite Cordylite-(Ce) Coronadite Corundum, sapphire, ruby, padparadscha Corvusite Covellite Crandallite |  | | Book (volume) | | exposures, such as Aquamarine, Beryl, some Ruby-red Corundum, Spodumene and Topaz. Georgia has been actively...outcropsBeryl; (h) Hickory Flat, 2 mi. NE on rd. to OrangeCorundum; 1 mi. W of Fairview Church, on E side of Sharp...areaStaurolite; NE 2½ mi.: (a) the Cochran Mica Mine (1 mi. from the Cherry Grove School, near old tenant...mi., on the Etowah R., at the Creighton-Franklin MineGold; on the Oscar Robertson farm; and on the...COUNTY AREA, many old mines and prospectsgemmy blue Quartz. ATHENS, along Apls Rd. across from the airport |
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