 | | Journal (article/letter/editorial) | | containingRare-Earth-Bearing Apatite, Molybdenite,and Magnetiteat Iron Hill, CusterCounty,Colorado* , FRED...HILDEBRAND AND NANCY M. CONKLIN Abstract Rare-earth-bearing apa•ite andmolybdenite werediscovered in...southwestslopeof Iron Hill about 4 miles east-southeast of Silver Cliff, Cust6r County, Colorado. The dike is...Bunker trachyandesiteand the matrix is mainly low-titanium magnetite. There were three stages of mineralization...percent apatite that contains about4 percentrare-earth elements. The first stagealso containsactinoliteand |  | | Report (issue) | | 930-M) "Prepared as a cooperative effort among earth-science and mineral-resource agencies of Australia...N65C68 1993 333.8'5465-dc20 92-41231 CIP FOREWORD Earth-science and mineral-resource agencies from several...tantalum---------------------------------------Mining and processing - - - - - - - - - - - - - - - -...- - - - - - - - - - - - - - - - - - - - Niobium mining and processing - - - - - - - - - - - - - - - -...- - - - - - - - - - - - - - - - - - - Tantalum mining and processing- - - - - - - - - - - - - - - - - |  | | Journal (article/letter/editorial) | | 1984, pp. 869-882 Mineralogy and Petrology of Iron Skarnsin Western British Columbia, Canada LAWRENCE...alkalicontentsbut muchhigherNa20/K20 ratios(avg = 2.6). The iron content of intrusions isinverselyproportionalto...associated skarn,suggestinga magmaticcomponentof iron in skarn. Fluid inclusionanalysessuggestthat early...geologyof westernCanada. SKARNdepositswhich are minedfor iron occurin a The presentstudydescribesthe detailed...plutonic-host-rock compositions andgeometries. calcic iron skarns which form in oceanic island-arc As a gr |  | | Journal (article/letter/editorial) | | 3, Terri Lacourse2, Laura K. Pisiak1 School of Earth and Ocean Sciences, University of Victoria, Victoria... BC, Canada 3 current address: Department of Earth Sciences, University of Toronto, Toronto, ON, MA...between magnetite from skarn and NU porphyry deposit settings. The heterogeneous composition of hydrothermal...set ACCEPTED MANUSCRIPT 4 from the Ertsberg deposit (Indonesia) with trace elements determined by electron...from eight deposits in New Mexico and Arizona, PT USA employing LA ICPMS. The latter work showed considerable |  | | Journal (issue) | | Metal and Mineral Markets A McGRAW-HILL PUBLICATION Vot. 37, No. 31 Aue-UST 1.1966 Second class postace...that they intend to continue their own bauxite mining activities on Jamaica. Kaiser is currently building...tons-still 1,000 below capacity. Oremet will triple titanium sponge production at its Albany, Ore., plant....facility from titanium ore (or rutile) to sponge. The sponge will then be converted into titanium and titanium...500 tons in capacity. A national policy on the mining and minerals industry was proposed by Sen. Wallace |
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