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      "title" : "The collection document"
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      "rel" : "self",
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      "title" : "This document as JSON"
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      "title" : "This document as text/html"
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    "depname" : "Lackner Lake",
    "deptype" : 10,
    "depage" : "1090±25 K-Ar, quartz syenite; 1138±28 and 1078±11, Rb-Sr isochron",
    "json" : "{\"id\":\"http:\\/\\/mrdata.usgs.gov\\/carbonatite\\/record\\/16\",\"type\":\"Feature\",\"geometry\":{\"type\":\"Point\",\"coordinates\":[-83.165,47.747777777778]},\"properties\":{\"country\":\"Canada\",\"cntrycd\":\"CNON\",\"stprov\":\"Ontario\",\"depname\":\"Lackner Lake\",\"altname\":\"Nemogos\",\"latitude\":\"47.7477777777778\",\"latdeg\":47,\"latmin\":44,\"latsec\":52,\"longitude\":\"-83.165\",\"londeg\":-83,\"lonmin\":-9,\"lonsec\":-54,\"mintype\":\"s\\u00f6vite\",\"oreton\":\"113\",\"deptype\":10,\"niobium\":\"0.21\",\"ree\":\"0.12\",\"p2o5\":\"3.19\",\"grades\":\"calculated from Sage and Watkinson (1991)\",\"depage\":\"1090\\u00b125 K-Ar, quartz syenite; 1138\\u00b128 and 1078\\u00b111, Rb-Sr isochron\",\"agemy\":\"1090\",\"tectset\":\"Canadian shield Superior province; Kapuskasing structural zone; south end of regional gravity high\",\"rocks\":\"carbonatite, ijolite, nepheline syenite, syenite\",\"rocksmap\":\"gneiss (Precambrian)\",\"orebody_fm\":\"carbonatite lens and dikes in circular alkaline complex 6 km in diameter\",\"alttype\":\"fenitization\",\"altwidth\":\"0\",\"comments\":\"Rare earths mostly contained in apatite of Zone no. 6 (Sage and Watkinson, 1991).\",\"mineral\":[{\"role\":\"ore\",\"name\":\"apatite\"},{\"role\":\"ore\",\"name\":\"fluorite\"},{\"role\":\"ore\",\"name\":\"magnetite\"},{\"role\":\"gangue\",\"name\":\"aegerine-augite\"},{\"role\":\"gangue\",\"name\":\"amphibole\"},{\"role\":\"gangue\",\"name\":\"biotite\"},{\"role\":\"gangue\",\"name\":\"calcite\"},{\"role\":\"gangue\",\"name\":\"cancrinite\"},{\"role\":\"gangue\",\"name\":\"fayalite\"},{\"role\":\"gangue\",\"name\":\"pyrophyllite\"},{\"role\":\"gangue\",\"name\":\"riebeckite\"},{\"role\":\"gangue\",\"name\":\"zeolite\"}],\"reference\":[\"Erdosh, G., 1979, The Ontario carbonatite province and its phosphate potential: Economic Geology, v.74, p. 331\\u0096338.\",\"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.\",\"Sage, R., and Watkinson, D.H., 1991, Alkalic rock-carbonatite complexes of the Superior structural province, northern Ontario, Canada: Chronique de la Recherche Miniere, no. 504, p. 5\\u009619.\",\"Singer, D.A., 1998, Revised grade and tonnage model of carbonatite deposits: U.S. Geological Survey Open-File Report 98-235, 8 p.\",\"Woolley, A.R., 1987, Alkaline rocks and carbonatites of the world \\u0096 Part 1: North and South America: London, British Museum (Natural History), 216 p.\"]}}",
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