 | | Report (issue) | | plagioclase, biotite, garnet, \hypersthene," spinel, corundum, sillimanite, andalusite, cordierite, tourmaline...Kachebere Hills, Mchinji district, Malawi. From Tizi-Ouchen, B¶ejaia, Algeria. From near Gananoque, Ontario |  | | Journal (article/letter/editorial) | | I). Both belong to the TuscanLatian Magmatic Province, which is characterized by extrusive and intrusive...potassic alkaline products of the Roman Magmatic Province. Chemical, petrological, and volcanological data...Tuscan-Latian Magmatic Province, dotted areas to the Roman Magmatic Province. Copyright the Mineralogical...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 |  | | Report (chapter) | | rocks and diopsidites (Lacroix 1941), and gem corundum deposits occur in veins in impure marbles, pyroxenites...chondrondite (Pradeepkumar & Krishnanath 2000). Hibonite –corundum deposits are associated with marbles throughout...amphibole; Carb, carbonate; Chl, chlorite; Crn, corundum; Di, diopside; Dsp, diaspore; Grd, grandidierite;...serendibite; Sinh, sinhalite; Spl, spinel; Crn, corundum. Symbols: x, ,1 vol.%; o, 1– 10 vol.%; oo, 10...patches with phlogopite, sericite and fine-grained corundum. Opaque minerals are frequent. In places an unknown |  | | Journal (issue) | | alluvial sapphires from Russia’s Jewish Autonomous District. 266 A New Deposit of Gem-Quality Grandidierite...geochemical characteristics of peridot from Gia Lai Province alongside specimens from other localities to gain...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 |  | 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...British Columbia NF Labrador (part of Newfoundland Province) MB Manitoba NB New Brunswick NF Newfoundland...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 |  | | Report (volume) | | Russian Far East, and Mg-Fe borates in the Liaoning Province, China. In compiling the Table, whenever possible...for the Early Proterozoic deposit in Liaoning Province, China is that the deposit formed by metamorphism...within pyroclastic rocks of the Roman Potassic Province. Rendiconti Fis Acc Lincei, ser 9, 1:159-163 Della...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 | | | Report (volume) | | Russian Far East, and Mg-Fe borates in the Liaoning Province, China. In compiling the Table, whenever possible...for the Early Proterozoic deposit in Liaoning Province, China is that the deposit formed by metamorphism...within pyroclastic rocks of the Roman Potassic Province. Rendiconti Fis Acc Lincei, ser 9, 1:159-163 Delia...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 |
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