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  "links" : [
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      "rel" : "collection",
      "type" : "application/geo+json",
      "title" : "The collection document"
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      "href" : "https://energy.usgs.gov/arcgis/rest/services/MRData/Carbonatite/OGCFeatureServer/collections/1/items/20?f=json",
      "rel" : "self",
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    "depname" : "Prairie Lake",
    "deptype" : 10,
    "depage" : "1069\u00961033 Rb-Sr, whole rock",
    "json" : "{\"id\":\"http:\\/\\/mrdata.usgs.gov\\/carbonatite\\/record\\/20\",\"type\":\"Feature\",\"geometry\":{\"type\":\"Point\",\"coordinates\":[-86.7175,49.035277777778]},\"properties\":{\"country\":\"Canada\",\"cntrycd\":\"CNON\",\"stprov\":\"Ontario\",\"depname\":\"Prairie Lake\",\"latitude\":\"49.0352777777778\",\"latdeg\":49,\"latmin\":2,\"latsec\":7,\"longitude\":\"-86.7175\",\"londeg\":-86,\"lonmin\":-43,\"lonsec\":-3,\"mintype\":\"Si-carbonatite, s\\u00f6vite\",\"oreton\":\"0.18\",\"deptype\":10,\"niobium\":\"0.25\",\"ree\":\"0\",\"p2o5\":\"0\",\"grades\":\"historic resource of mid-1960s (Reuters, 2008)\",\"depage\":\"1069\\u00961033 Rb-Sr, whole rock\",\"agemy\":\"1051\",\"tectset\":\"Mesoproterozoic Midcontinent rift system, Trans-Superior tectonic zone\",\"rocks\":\"carbonatite, ijolite, malignite, pyroxenite\",\"rocksmap\":\"gneiss (Archean)\",\"orebody_fm\":\"circular plug\",\"ore_a\":\"1.7\",\"ore_area\":\"2.5\",\"ore_b\":\"1.7\",\"alttype\":\"fenitization\",\"altwidth\":\"0\",\"comments\":\"In ore: 0.9% U3O8 (Sage and Watkinson, 1991, Reuters, 2008) and 1.5\\u00969.2% P2O5 (Erdosh, 1979, Resource Investor, 2008). Grades are confirmed by recent drilling.\",\"mineral\":[{\"role\":\"ore\",\"name\":\"baddeleyite\"},{\"role\":\"ore\",\"name\":\"betafite\"},{\"role\":\"ore\",\"name\":\"marianoite\"},{\"role\":\"ore\",\"name\":\"perovskite\"},{\"role\":\"ore\",\"name\":\"pyrochlore\"},{\"role\":\"ore\",\"name\":\"titanite\"},{\"role\":\"ore\",\"name\":\"w\\u00f6hlerite\"},{\"role\":\"ore\",\"name\":\"zirconolite\"},{\"role\":\"gangue\",\"name\":\"biotite\"},{\"role\":\"gangue\",\"name\":\"calcite\"},{\"role\":\"gangue\",\"name\":\"dolomite\"},{\"role\":\"gangue\",\"name\":\"pectolite\"},{\"role\":\"gangue\",\"name\":\"phlogopite\"},{\"role\":\"gangue\",\"name\":\"quartz\"},{\"role\":\"gangue\",\"name\":\"vesuvianite\"},{\"role\":\"gangue\",\"name\":\"wollastonite\"}],\"reference\":[\"Chakhmouradian, A.R., Mitchell, R.H., Burns, P.C., Mikhailova, Y., and Reguir, E.P., 2008, Marianoite, a new member of the cuspidine group from the Prairie Lake silicocarbonatite, Ontario: The Canadian Mineralogist, v. 46, p.1023\\u00961032.\",\"Erdosh, G., 1979, The Ontario carbonatite province and its phosphate potential: Economic Geology, v.74, p. 331\\u0096338.\",\"Heaman, L.M., and Machado, N., 1992, Timing and origin of midcontinent rift alkaline magmatism, North America\\u0097Evidence from the Coldwell complex: Contributions to Mineralogy and Petrology, v. 110, p. 289\\u0096303.\",\"Mariano, A.N., and Roeder, P.I., 1989, W\\u00f6hlerite: chemical composition, cathodoluminescence and environment of crystallization: The Canadian Mineralogist, v. 27, p.709\\u0096720.\",\"Resource Investor, 2008, Nuinsco Resources Limited, 3 p.,\",\"http:\\/\\/www.resourceinvestor.com\\/pebble.asp?relid=39364 (last visited February 10, 2009)\",\"Reuters, 2008, Nuinsco Resources Limited: diamond drilling to commense immediately at Prairie Lake Project, 3 p., http:\\/\\/www.reuters.com\\/article\\/pressRelease\\/idUS152116+17-Jul-2008+MW20080717 (last visited February 10, 2009)\",\"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.\",\"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.\"]}}",
    "url" : "https://mrdata.usgs.gov/carbonatite/show-carbonatite.php?rec_id=20"
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}