ID: 38
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