 | | Journal (article/letter/editorial) | | Grandidieriteof contact-metamorphic originfrom Maratakka, northwestSurinam Euoxo W. F. or Rorvnn GeologischM...pyroxene-hornfels-facies xenolithsin a gabbroicintrusion at Maratakka,northwestSurinam. Introduction Occurrence Grandidierite...body, a few kilometersin size, gabbroicbodyat Maratakka(5" 11,37,,N, 56"54,16" surroundedby granite,presumablywith...fibrousor locallypoikiloblas- magnetite, and minor corundum,apatite,zircon,and tic, and occur as sheaf-likeaggregates...silFrom the presenceof hypersthene, limanite,and corundum* alkali feldspar,metamoraround 700'C or highermay |  | | Journal (article/letter/editorial) | | crystals in association with two rounded grains of corundum (high relief). Dark grains: green spinel and minor...also grain-to-grain contacts with feldspars and corundum. Optical data are given in Table I a~d a single-crystal...sanidine. Time relations between corundum and grandidierite and between corundum and spinel are not quite clear...clear. Other xenoliths show corundum to be contemporaneous with or later than spinel. That grandidierite... 345. Mt. Amiata (Italy) Mt. Cimino (Italy) Maratakka (Surinam) Tizi-Ouchen (Algeria) Blanket Bay (Cuvier |  | | Report (issue) | | plagioclase, biotite, garnet, \hypersthene," spinel, corundum, sillimanite, andalusite, cordierite, tourmaline...on Madagascar. In the Kachebere Hills, Mchinji district, Malawi. From Tizi-Ouchen, B¶ejaia, Algeria. From...on Almjotheia, 12 km north of Moi, Norway. At Maratakka, Surinam. On Cuvier Island, New Zealand. Known |  | | Book | | SPRINGER BRIEFS IN EARTH SCIENCES Marco Keersemaker Suriname Revisited: Economic Potential of its Mineral Resources...springer.com/series/8897 Marco Keersemaker Suriname Revisited: Economic Potential of its Mineral Resources...the last employees of BHP Billiton Maatschappij Suriname, I was closely involved in the departure of my...would possibly be economic. Besides my years in Suriname, I have also spent almost a decade working on...belief that there must be hidden opportunities in Suriname. Professor Wong et al. were the last to review |  | | Journal (issue) | | alluvial sapphires from Russia’s Jewish Autonomous District. 266 A New Deposit of Gem-Quality Grandidierite...semitransparent, blue to pinkish blue sapphire crystals and corundum-bearing rocks at Sutara, in the Jewish Autonomous...Vol. 45, No. 2, pp. 152–154. Thomas T. (2009) Corundum c-axis device for sample preparation. GIA Ongoing...Research, June 8, http://www.gia.edu/ongoingresearch/corundum-c-axis-device-for-sample-preparation COLOR MODIFICATION...Fedoseev From 2009 to 2011, sapphire crystals and corundum-bearing rocks were discovered at Sutara, in the |  | | Journal (article/letter/editorial) | | chlorite, en = enstatite, spr = sapphirine, c = corundum. pressure-temperature grid in the system KNFMA...Grandidierite of contact-metamorphic origin from Maratakka, north west Surinam. Amer. Mineral., 61, 332--3 |  | | Report (volume) | | hydrous strontium borate from the Kramer Borate District, California. USGS Prof Paper 424-C:294-297 Erd...paragenesis of the Little Three mine pegmatites, Ramona District, San Diego County, California. Mineral Rec 20:101-127... from the Little Three mine pegmatite, Ramona District, San Diego County, California. Am Mineral 76:1998-2002...Vicanite-(Ce): a new borosilicate from the Vico volcanic district (Latium, Italy). Eur J Mineral 7:439-446 Ca-Th-REE...41203-8203 (S) SAI,03 2B,03; (S) 5A1703- B203 Corundum Al,03 Diaspore Gibbsite Boehmite etc H>O0 | | | Report (volume) | | hydrous strontium borate from the Kramer Borate District, California. USGS Prof Paper 424-C:294-297 Erd...paragenesis of the Little Three mine pegmatites, Ramona District, San Diego County, California. Mineral Ree 20:101-127... from the Little Three mine pegmatite, Ramona District, San Diego County, California. Am Mineral 76:1998-2002...Ca-Th-REE borosilicate from the Vico volcanic district (Latium, Italy). Eur J Mineral 7:439-446 Matsubara...single-phase product, the unstable pair quartz + corundum being present in addition. In an attempt at synthesizing |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Harder The hardest known mineral 8 9 10 Topaz Corundum Diamond Hardness is an easily measured and valuable...Co., Bonanza mine, Trinity Co., Michigan Bluff district, Placer Co., in AK, placers at Fairbanks, Iditarod...and quartz veins at Juneau. In Canada, Noranda district, PQ; Porcupine, Kirkland Lake, and Larder Lake...deposits, ON; Atlin and Caribou, BC; and Klondike district, YT. In Mexico, Altar and Magdalena, SON; Parral...localities, AZ; Calico district, San Bernadino Co., Cerro Gordo(*), Inyo Co., Bodie district, Mono Co., and other |
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