ID: 54
rec_id: 54
depname: Sukulu
deptype: 10
depage: 26–24 K-Ar
json: {"id":"http:\/\/mrdata.usgs.gov\/carbonatite\/record\/54","type":"Feature","geometry":{"type":"Point","coordinates":[34.158333333333,-0.625]},"properties":{"country":"Uganda","cntrycd":"UGND","depname":"Sukulu","latitude":"-0.625","latmin":-37,"latsec":-30,"longitude":"34.1583333333333","londeg":34,"lonmin":9,"lonsec":30,"startdate":"late 1960s","mintype":"beforsite, s\u00f6vite (alvikite)","oreton":"230.7","deptype":10,"niobium":"0.24","ree":"0","p2o5":"12.8","grades":"Karagambe-Kaliiza (1989)","depage":"26\u009624 K-Ar","agemy":"25","tectset":"Cenozoic (post-Karroo) East-African rift","rocks":"carbonatite, syenite","rocksmap":"gneiss (Archean)","orebody_fm":"ring dikes and cone sheets","ore_a":"4.2","ore_area":"11","ore_b":"3.3","alttype":"fenitization","altwidth":"0","dep5km":"10","comments":"Mining ceased in late 1970s. Resources contain 0.07% Zr, 0.3% Zn, and 5.8% BaO. Apatite of residual soil contains ?0.32% La2O3. Age of 40 Ma by Sr-Nd model (Bell and Tilton, 2001).","mineral":[{"role":"ore","name":"anatase"},{"role":"ore","name":"apatite"},{"role":"ore","name":"baddeleyite"},{"role":"ore","name":"barite"},{"role":"ore","name":"chalcopyrite"},{"role":"ore","name":"galena"},{"role":"ore","name":"goethite"},{"role":"ore","name":"gold"},{"role":"ore","name":"gorceixite"},{"role":"ore","name":"hematite"},{"role":"ore","name":"ilmenite"},{"role":"ore","name":"limonite"},{"role":"ore","name":"magnetite"},{"role":"ore","name":"monazite"},{"role":"ore","name":"perovskite-(ce)"},{"role":"ore","name":"pyrochlore"},{"role":"ore","name":"pyrrhotite"},{"role":"ore","name":"zircon"},{"role":"gangue","name":"calcite"},{"role":"gangue","name":"biotite"},{"role":"gangue","name":"dolomite"},{"role":"gangue","name":"olivine"},{"role":"gangue","name":"phlogopite"},{"role":"gangue","name":"vermiculite"}],"reference":["Bell, K., and Tilton, G.R., 2001, Nd, Pb and Sr isotopic compositions of East African carbonatites\u0097Evidence for mantle mixing and plume inhomogeneity: Journal of Petrology, v. 42, no. 10, p. 1927\u00961945.","Karagambe-Kaliiza, F.A., 1989, The Sukulu phosphate deposits, south-eastern Uganda, in Bell, K., ed., Carbonatites genesis and evolution: London, Unwin Hyman, p. 184\u0096186.","King, B.C., and Sutherland, D.S., 1966, the carbonatite complexes of eastern Uganda, in Tuttle, O.F., and Gittins, J., eds., Carbonatites: New York, Interscience Publishers, p. 73\u0096126.","Reedman, J.H., 1984, Resources of phosphate, niobium, iron, and other elements in residual soils over the Sukulu carbonatite complex, southeastern Uganda: Economic Geology, v. 79, p. 716\u0096724.","Ting, W., Rankin, A.H., and Woolley, A.R., 1994, Petrogenetic significance of solid carbonate inclusions in apatite of the Sukulu carbonatite, Uganda: Lithos, v. 31, p. 177\u0096178.","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=54