ID: 4
rec_id: 4
depname: Araxa
deptype: 10
depage: 98–77, K-Ar, Ar-Ar, U-Pb
json: {"id":"http:\/\/mrdata.usgs.gov\/carbonatite\/record\/4","type":"Feature","geometry":{"type":"Point","coordinates":[-46.941944444444,-19.661111111111]},"properties":{"country":"Brazil","cntrycd":"BRZL","stprov":"Minas Gerais","depname":"Araxa","altname":"Barreiro","latitude":"-19.6611111111111","latdeg":-19,"latmin":-39,"latsec":-40,"longitude":"-46.9419444444444","londeg":-46,"lonmin":-56,"lonsec":-31,"mintype":"beforsite","oreton":"462","deptype":10,"niobium":"2.48","ree":"0.234","p2o5":"15","grades":"Singer (1998), Orris and Grauch (2002)","depage":"98\u009677, K-Ar, Ar-Ar, U-Pb","agemy":"85","tectset":"Cretaceous Alta Parana\u00edba igneous province in Proterozoic Brasilia belt dividing S\u00e3o Francisco craton and Paran\u00e1 basin","rocks":"carbonatite, glimmerite, lamprophyre, phoscorite","rocksmap":"quartzite, biotite schist (Precambrian)","orebody_fm":"circular plug","ore_a":"4.5","ore_area":"15.9","ore_b":"4.5","alttype":"fenitization, glimmerization","altwidth":"0","comments":"Laterite ore ?200 m thick, 8 Mt at 13.5% Re2O3, 2% Nb2O5, 0.05% U3O8 (Orris and Grauch, 2002).","mineral":[{"role":"ore","name":"ancylite"},{"role":"ore","name":"apatite"},{"role":"ore","name":"ba-pyrochlore"},{"role":"ore","name":"barite"},{"role":"ore","name":"burbankite"},{"role":"ore","name":"calzirtite"},{"role":"ore","name":"ce-pyrochlore"},{"role":"ore","name":"chromite"},{"role":"ore","name":"goethite"},{"role":"ore","name":"gorceixite"},{"role":"ore","name":"goyazite"},{"role":"ore","name":"hematite"},{"role":"ore","name":"ilmenite"},{"role":"ore","name":"isokite"},{"role":"ore","name":"limonite"},{"role":"ore","name":"magnetite"},{"role":"ore","name":"monazite"},{"role":"ore","name":"perovskite"},{"role":"ore","name":"pyrite"},{"role":"ore","name":"pyrochlore"},{"role":"ore","name":"pyrrhotite"},{"role":"ore","name":"rutile"},{"role":"ore","name":"strontianite"},{"role":"ore","name":"zirkelite"},{"role":"gangue","name":"aegerine"},{"role":"gangue","name":"alunite"},{"role":"gangue","name":"ankerite"},{"role":"gangue","name":"anthophyllite"},{"role":"gangue","name":"arfvedsonite"},{"role":"gangue","name":"barytocalcite"},{"role":"gangue","name":"b\u00f6mite"},{"role":"gangue","name":"breunnerite"},{"role":"gangue","name":"calcite"},{"role":"gangue","name":"dolomite"},{"role":"gangue","name":"eckermannite"},{"role":"gangue","name":"gibbsite"},{"role":"gangue","name":"kaolinite"},{"role":"gangue","name":"norsethite"},{"role":"gangue","name":"phlogopite"},{"role":"gangue","name":"quartz"},{"role":"gangue","name":"siderite"},{"role":"gangue","name":"vermiculite"}],"reference":["Kamitani, M., and Hirano, H., 1990, Araxa carbonatite deposit and its lateratization: Bulletin of the Geological Survey of Japan, v. 41, no. 11, p. 594\u0096604.","Nasraoui, M., and Waerenborgh, J., 2001, Fe speciation in weathered pyrochlore-group minerals from the Lueshe and Arax\u00e1 (Barreiro) carbonatites by 57Fe M\u00f6ssbauer spectroscopy: The Canadian Mineralogist, v. 39, p. 1073\u00961080.","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.","Silva, A.B., 1986, Jazida de ni\u00f3bio de Arax\u00e1, Minas Gerais, in Schobbenhaus, C., and Silva Coelho, C.E., eds., Principas dep\u00f3sitos minerais do Brasil, v. 2, Cap\u00edtulo 25: Brasilia, Departmento Nacional da Produ\u00e7\u00e3o Mineral, p. 435\u0096453.","Singer, D.A., 1998, Revised grade and tonnage model of carbonatite deposits: U.S. Geological Survey Open-File Report 98-235, 8 p.","Traversa, G., Gomes, C.B., Brotzu, P., Baraglini, P., Morbidelli, L., Principato, S.M., Ronca, S., and Ruberti, E., 2001, Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Arax\u00e1 complex (Alta Parana\u00edba province, Brazil): Anais da Academia Brasileira de Ci\u00eancias, v. 73, no. 1, p. 1\u009632.","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=4