{
  "type" : "Feature",
  "links" : [
    {
      "href" : "https://energy.usgs.gov/arcgis/rest/services/MRData/Carbonatite/OGCFeatureServer/collections/1/items?f=application%2fjson",
      "rel" : "collection",
      "type" : "application/geo+json",
      "title" : "The collection document"
    },
    {
      "href" : "https://energy.usgs.gov/arcgis/rest/services/MRData/Carbonatite/OGCFeatureServer/collections/1/items/38?f=json",
      "rel" : "self",
      "type" : "application/geo+json",
      "title" : "This document as JSON"
    },
    {
      "href" : "https://energy.usgs.gov/arcgis/rest/services/MRData/Carbonatite/OGCFeatureServer/collections/1/items/38?f=text/html",
      "rel" : "alternate",
      "type" : "text/html",
      "title" : "This document as text/html"
    },
    {
      "href" : "https://energy.usgs.gov/arcgis/rest/services/MRData/Carbonatite/OGCFeatureServer/collections/1/items/38?f=application/geo+json",
      "rel" : "alternate",
      "type" : "application/geo+json",
      "title" : "This document as application/geo+json"
    }
  ],
  "LayerId" : 1,
  "LayerName" : "mrdata.carbonatite.carbonatitev",
  "id" : "38",
  "properties" : {
    "rec_id" : 38,
    "depname" : "Bou Naga",
    "deptype" : 10,
    "depage" : "678±8 U-Pb zircon from syenite",
    "json" : "{\"id\":\"http:\\/\\/mrdata.usgs.gov\\/carbonatite\\/record\\/38\",\"type\":\"Feature\",\"geometry\":{\"type\":\"Point\",\"coordinates\":[-13.316666666667,18.983333333333]},\"properties\":{\"country\":\"Mauritania\",\"cntrycd\":\"MRTA\",\"depname\":\"Bou Naga\",\"latitude\":\"18.9833333333333\",\"latdeg\":18,\"latmin\":59,\"longitude\":\"-13.3166666666667\",\"londeg\":-13,\"lonmin\":-19,\"startdate\":\"1968\",\"mintype\":\"beforsite?\",\"oreton\":\"0.1\",\"deptype\":10,\"niobium\":\"0\",\"ree\":\"4.4\",\"p2o5\":\"0\",\"grades\":\"Jackson and Christiansen (1993)\",\"depage\":\"678\\u00b18 U-Pb zircon from syenite\",\"agemy\":\"680\",\"tectset\":\"West-African craton window in Mauritania fold belt\",\"rocks\":\"alkaline granite, carbonatite (?), syenite\",\"rocksmap\":\"gneiss (Neoarchean, 2709\\u00b1136 Ma)\",\"orebody_fm\":\"carbonatite (?)-alkaline ring complex 113 sq. km\",\"altwidth\":\"0\",\"dep5km\":\"11d\",\"comments\":\"Production 1968\\u00961970.\",\"mineral\":[{\"role\":\"ore\",\"name\":\"apatite\"},{\"role\":\"ore\",\"name\":\"barite\"},{\"role\":\"ore\",\"name\":\"bastnaesite\"},{\"role\":\"ore\",\"name\":\"fluorite\"},{\"role\":\"ore\",\"name\":\"monazite\"},{\"role\":\"gangue\",\"name\":\"carbonate\"}],\"reference\":[\"Blanc, A., Bernard-Griffiths, J., Caby, R., Caruba, C., Caruba, R., Dars, R., Fourcade, S., and Peucat, J.J., 1992, U-Pb dating and isotopic signature of the alkaline ring complexes of Bou Naga (Mauritania)\\u0097Its bearing on Late Proterozoic plate tectonics around the West African craton: Journal of African Earth Sciences, v. 14, p. 301\\u0096311.\",\"British Geological Survey, 2005, Mapping Mauritanian\\u0092s desert, 2 p.,\",\"http:\\/\\/www.bgs.ac.uk\\/downloads\\/start.cfm?id=446 (last visited February 19, 2009)\",\"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.\",\"Secretariat of ACP (African, Caribbean, and Pacific Group of States), 2009, Mining Data Bank, Bou Naga, 4 p., http:\\/\\/mines.acp.int\\/html\\/mine_MRT-00062_en.html (last visited February 19, 2009)\"]}}",
    "url" : "https://mrdata.usgs.gov/carbonatite/show-carbonatite.php?rec_id=38"
  }
}