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    "depname" : "Bear Lodge",
    "deptype" : 10,
    "depage" : "50.5±1.2 \u0096 48.8±1.7 \u0096 38.3±0.6 K-Ar, sanidine",
    "json" : "{\"id\":\"http:\\/\\/mrdata.usgs.gov\\/carbonatite\\/record\\/59\",\"type\":\"Feature\",\"geometry\":{\"type\":\"Point\",\"coordinates\":[-104.45166666667,44.478611111111]},\"properties\":{\"country\":\"United States\",\"cntrycd\":\"USWY\",\"stprov\":\"Wyoming\",\"depname\":\"Bear Lodge\",\"altname\":\"Bear Lodge Mts.\",\"latitude\":\"44.4786111111111\",\"latdeg\":44,\"latmin\":28,\"latsec\":43,\"longitude\":\"-104.451666666667\",\"londeg\":-104,\"lonmin\":-27,\"lonsec\":-6,\"discdate\":\"1949\",\"mintype\":\"s\\u00f6vite\",\"oreton\":\"10.7\",\"deptype\":10,\"niobium\":\"0\",\"ree\":\"3.6\",\"p2o5\":\"0\",\"grades\":\"Rare Element Resources (2009) at 1% RE2O3 cutoff grade\",\"depage\":\"50.5\\u00b11.2 \\u0096 48.8\\u00b11.7 \\u0096 38.3\\u00b10.6 K-Ar, sanidine\",\"agemy\":\"49\",\"tectset\":\"North-American platform, Eocene Black Hills uplift, western end of westerly trended alkaline intrusive belt\",\"rocks\":\"carbonatite, intrusive breccia, lamprophyre, nepheline syenite, phonolite, syenite, trachyte\",\"rocksmap\":\"granite (Precambrian), limestone, mudstone, sandstone, shale (Paleozoic\\u0096Mesozoic)\",\"orebody_fm\":\"dike, vein, plug within alkaline intrusive complex 43 sq. km\",\"alttype\":\"K-feldspar\\u0096pyrite, fenitization\",\"altwidth\":\"0\",\"dep5km\":\"11d, 25a\",\"comments\":\"Flanks and depth of estimated resources are open. Early resource evaluations: 76.2 Mt at 1.5% RE2O3 by Gersic and others (1990); 726 Mt at 1.306% RE2O3 and 0.034% ThO2 by Jackson and Christiansen (1993). Oxidized zone to \u003e100 m depth, carbonatite ranges from hairline veinlets to dikes ?30m thick.\",\"mineral\":[{\"role\":\"ore\",\"name\":\"ancylite\"},{\"role\":\"ore\",\"name\":\"apatite\"},{\"role\":\"ore\",\"name\":\"barite\"},{\"role\":\"ore\",\"name\":\"bastnaesite\"},{\"role\":\"ore\",\"name\":\"brookite\"},{\"role\":\"ore\",\"name\":\"chalcopyrite\"},{\"role\":\"ore\",\"name\":\"fe-oxide\"},{\"role\":\"ore\",\"name\":\"fluorite\"},{\"role\":\"ore\",\"name\":\"galena\"},{\"role\":\"ore\",\"name\":\"hematite\"},{\"role\":\"ore\",\"name\":\"magnetite\"},{\"role\":\"ore\",\"name\":\"mn-oxide\"},{\"role\":\"ore\",\"name\":\"monazite\"},{\"role\":\"ore\",\"name\":\"molybdenite\"},{\"role\":\"ore\",\"name\":\"parisite\"},{\"role\":\"ore\",\"name\":\"pyrite\"},{\"role\":\"ore\",\"name\":\"pyrolusite\"},{\"role\":\"ore\",\"name\":\"pyrrhotite\"},{\"role\":\"ore\",\"name\":\"rutile\"},{\"role\":\"ore\",\"name\":\"sphalerite\"},{\"role\":\"ore\",\"name\":\"sphene\"},{\"role\":\"ore\",\"name\":\"strontianite\"},{\"role\":\"ore\",\"name\":\"synchysite\"},{\"role\":\"ore\",\"name\":\"thorianite\"},{\"role\":\"ore\",\"name\":\"uraninite\"},{\"role\":\"ore\",\"name\":\"xenotime\"},{\"role\":\"ore\",\"name\":\"zircon\"},{\"role\":\"gangue\",\"name\":\"aegerine\"},{\"role\":\"gangue\",\"name\":\"biotite\"},{\"role\":\"gangue\",\"name\":\"calcite\"},{\"role\":\"gangue\",\"name\":\"k-feldspar\"},{\"role\":\"gangue\",\"name\":\"quartz\"},{\"role\":\"gangue\",\"name\":\"sanidine\"}],\"reference\":[\"Bliss. J.D., ed., 1992, Developments in deposit modeling: U.S. Geological Survey Bulletin 2004, 168 p.\",\"Gersic, J., Peterson, E.K., Schreiner, R.A., 1990, Appraisal of selected mineral resources of the Black Hills National Forest, South Dakota and Wyoming\\u0097Executive summary: U.S. Bureau of Mines, MLA Series, no. 4-90, 29 p.\",\"Noble, A.C., Clark, J.G., Ranta, D.E., 2009, Technical report on the mineral resources of the Bear Lodge rare-earth project: Rare Element Resources Ltd., 171 p.\",\"Jackson, W.D., and Christiansen, G., 1993, International strategic inventory summary report-\\u0096rare-earth oxides: U.S. Geological Survey Circular 930-N, 68 p.\",\"Orris, G.J., and Grauch, R.I., 2002, Rare earth element mines, deposits, and occurrences: U.S. Geological Survey Open-File Report 02-189, 174 p.\",\"Rare Element Resources Ltd., 2009, Rare Element Reports More than 125% Increase in rare-earth mineral resource at Bear Lodge: 9.8 million-ton inferred mineral resource averaging 4.07% rare-earth oxides: News Release of  March 23, 2009, 4 p.,\",\"http:\\/\\/www.rareelementresources.com\\/s\\/NewsReleases.asp?ReportID=342327 (last visited June 5, 2009)\",\"Staaz, M.H., 1983, Geology and description of thorium and rare-earth deposits in the southern Bear Lodge Mountains, northeastern Wyoming: U.S. Geological Survey Professional Paper 1049-D, 52 p.\",\"Woolley, A.R., 1987, Alkaline rocks and carbonatites of the world, Part 1\\u0097North and South America: London, British Museum (Natural History), 216 p.\"]}}",
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}