 | | 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...section.Thev perthiticandesine, perthite,cordierite,biotite,spinel, areslenderprismaticto fibrousor locallypoikiloblas-...Biotiteformspoikiloblasts cordierite,as intergrowthswith biotite,and as rims tation in a fine-grained granoblastic |  | | Journal (article/letter/editorial) | | of sanidine, green spinel, and biotite, while plagioclase and biotite are the major phases in the ~ o... The matrix consists of sanidine, spinel, and biotite. Nicols parallel. Length of photograph: 5.~ mm...sanidine; Sp = spinel; P = plagioclase; Bio = biotite. (e) MC 6.9. Slender grandidierite crystals in...(high relief). Dark grains: green spinel and minor biotite. Light areas: sanidine and corroded plagioclase...grandidierite also shows grain-to-grain contacts with biotite and feldspars. A sillimanite relict, containing |  | | Report (issue) | | Association: Quartz, potassic feldspar, plagioclase, biotite, garnet, \hypersthene," spinel, corundum, sillimanite...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 (article/letter/editorial) | | with Mg-rich cores of cordierite-garnet-spinel-biotite-ilmenite and variably developed plagioclase halos...halos. The segregations are hosted within biotite-bearing, plagio-feldspathic gneiss. Textural relationships...of plagioclase, quartz and minor K-feldspar and biotite. The borosilicate layers consist predominantly...borosilicate-rich layers are characteristically poor in biotite, in contrast to the enclosing quartzofeldspathic...of medium-grained equigranular plagioclase with biotite defining a well developed $2 fabric with minor |  | | Journal (issue) | | alluvial sapphires from Russia’s Jewish Autonomous District. 266 A New Deposit of Gem-Quality Grandidierite...JAPAN CHINA 0 50 km Figure 2. The Sutara mine district is located in the Jewish Autonomous Region (Russian...(figure 4). Intrusive rocks are present as biotite granites, biotite and tourmaline leucogranites, veins of...microcline, microperthite, oligoclase, quartz, and biotite; muscovite is less common. Secondary minerals are...Granodiorite, quartz diorite, granite, skarn ORDOVICIAN Biotite and tourmaline leucogranite, granitic pegmatite |  | | Report (volume) | | buffer capacity of reactions between tourmaline, biotite and cordierite 307 Petrology of Boron in Peraluminous...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 | | | Report (volume) | | buffer capacity of reactions between tourmaline, biotite and cordierite 307 Petrology of Boron in Peraluminous...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 |  | 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) | | 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...in CA. In Canada, at Cobalt(*) and Thunder Bay district, ON, Highland Bell mine(*), Beaverdell, BC, and |
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