ID: 12
rec_id: 12
depname: Karonge
deptype: 10
depage: 587±4, La-Ba isochron, bastnaesite
json: {"id":"http:\/\/mrdata.usgs.gov\/carbonatite\/record\/12","type":"Feature","geometry":{"type":"Point","coordinates":[29.449166666667,-3.5022222222222]},"properties":{"country":"Burundi","cntrycd":"BRND","depname":"Karonge","altname":"Gakara","latitude":"-3.50222222222222","latdeg":-3,"latmin":-30,"latsec":-8,"longitude":"29.4491666666667","londeg":29,"lonmin":26,"lonsec":57,"discdate":"1940s","startdate":"produced till 1978","oreton":"0.2","deptype":10,"niobium":"0","ree":"1.59","p2o5":"0","grades":"Jackson and Christiansen (1993)","depage":"587\u00b14, La-Ba isochron, bastnaesite","agemy":"587","tectset":"East African rift system","rocks":"carbonatite?","rocksmap":"gneiss, granite, pegmatite (Neoproterozoic)","orebody_fm":"veins and stockworks","alttype":"silicification, biotitization","altwidth":"0","dep5km":"11d","comments":"Mineable ore contains 3% bastnaesite. The deposit assumed to have carbonatite source. Veins and stockworks occupy area 20x20 km.","mineral":[{"role":"ore","name":"barite"},{"role":"ore","name":"bastnaesite"},{"role":"ore","name":"cerianite-(ce)"},{"role":"ore","name":"crandallite"},{"role":"ore","name":"fluocerite"},{"role":"ore","name":"galena"},{"role":"ore","name":"goethite"},{"role":"ore","name":"goyazite"},{"role":"ore","name":"molybdenite"},{"role":"ore","name":"monazite"},{"role":"ore","name":"pyrite"},{"role":"ore","name":"pyromorphite"},{"role":"ore","name":"rhabdophane-(ce)"},{"role":"gangue","name":"biotite"},{"role":"gangue","name":"kaolinite"},{"role":"gangue","name":"microcline"},{"role":"gangue","name":"quartz"},{"role":"gangue","name":"vermiculite"}],"reference":["Jackson, W.D., and Christiansen, G., 1993, International strategic inventory summary report-\u0096rare-earth oxides: U.S. Geological Survey Circular 930-N, 68 p.","Lehman, B., Nakai, S., H\u00f6ndorf, A., Brinckmann, J., Dulski, P., Hein, U.F., and Masuda, A., 1994, REE mineralization at Gakara, Burundi\u0097Evidence for anomalous upper mantle in the western Rift Valley: Geochimica and Cosmochimica Acta, v. 58, no. 2, p. 985\u0096992.","Van Wambeke, L., 1977, The Karonge Rare Earth deposits, Republic of Burundi\u0097New mineralogcal-geochemical data and origin of the mineralization: Mineralium Deposita, v. 12, p. 373\u0096380.","Woolley, A.R., 2001, Alkaline rocks and carbonatites of the world \u0096 Part 3: Africa: London, The Geological Society, 372 p."]}}
url: https://mrdata.usgs.gov/carbonatite/show-carbonatite.php?rec_id=12