ID: 10
rec_id: 10
depname: Serra Negra
deptype: 10
depage: 81.6 K-Ar, biotite
json: {"id":"http:\/\/mrdata.usgs.gov\/carbonatite\/record\/10","type":"Feature","geometry":{"type":"Point","coordinates":[-46.886666666667,-18.920277777778]},"properties":{"country":"Brazil","cntrycd":"BRZL","stprov":"Minas Gerais","depname":"Serra Negra","latitude":"-18.9202777777778","latdeg":-18,"latmin":-55,"latsec":-13,"longitude":"-46.8866666666667","londeg":-46,"lonmin":-53,"lonsec":-12,"mintype":"s\u00f6vite","oreton":"200","deptype":10,"niobium":"0","ree":"0.9","p2o5":"0","grades":"(Kamitani and Hirano, 1990), REE grade approximately calculated","depage":"81.6 K-Ar, biotite","agemy":"82","tectset":"Cretaceous Alta Parana\u00edba igneous province in the Proterozoic Brasilia belt dividing S\u00e3o Francisco craton and Paran\u00e1 basin","rocks":"carbonatite, dunite, jacupirangite, peridotite, shonkinite","rocksmap":"phyllite, quartzite (Precambrian)","orebody_fm":"oval carbonatite-alkaline intrusive complex","ore_area":"65","alttype":"fenitization (weak)","altwidth":"0","comments":"200 Mt at 27.63% TiO2 (Kamitani and Hirano, 1990); >3% Re2O3 in concentrate, extracted as byproduct (Orris and Grauch, 2002). Lateritic cover 150 m thick at oval intrusive complex 65 sq. km.","mineral":[{"role":"ore","name":"anatase"},{"role":"ore","name":"apatite"},{"role":"ore","name":"baddeleyite"},{"role":"ore","name":"perovskite"},{"role":"ore","name":"pyrochlore"},{"role":"ore","name":"th and u minerals (disseminated)"},{"role":"gangue","name":"biotite"},{"role":"gangue","name":"calcite"},{"role":"gangue","name":"quartz"}],"reference":["Gomes, C.B., Ruberti, E., and Morbidelli, L., 1990, Carbonatite complexes from Brazil\u0097A review: Journal of South American Earth Sciences, v. 3, no. 1, p. 51\u009663.","Kamitani, M., and Hirano, H., 1990, Important carbonatite-alkaline\/alkaline complexes and related mineral resources in the world: Bulletin of the Geological Survey of Japan, v. 41, no. 11, p. 631\u0096640.","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.","Singer, D.A., 1998, Revised grade and tonnage model of carbonatite deposits: U.S. Geological Survey Open-File Report 98-235, 8 p.","Ulbrich, H.H.G.J., and Gomes, C.B., 1981, Alkaline rocks from continental Brazil: Earth-Science Reviews, v. 17, p. 135\u0096154.","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=10