ID: 17
rec_id: 17
depname: Manitou Island
deptype: 10
depage: 570–560 K-Ar, biotite
json: {"id":"http:\/\/mrdata.usgs.gov\/carbonatite\/record\/17","type":"Feature","geometry":{"type":"Point","coordinates":[-79.567222222222,46.279444444444]},"properties":{"country":"Canada","cntrycd":"CNON","stprov":"Ontario","depname":"Manitou Island","latitude":"46.2794444444444","latdeg":46,"latmin":16,"latsec":46,"longitude":"-79.5672222222222","londeg":-79,"lonmin":-34,"lonsec":-2,"startdate":"1950s","mintype":"s\u00f6vite","oreton":"4.85","deptype":10,"niobium":"0.756","ree":"0","p2o5":"0","grades":"Singer (1998)","depage":"570\u0096560 K-Ar, biotite","agemy":"565","tectset":"Canadian shield, Paleozoic Ottawa-Bonnechere regional graben","rocks":"carbonatite, pegmatite vein, pyroxenite, syenite","rocksmap":"conglomerate, limestone (Ordovician)","orebody_fm":"veins and thick body in central area of alkaline pyroxenite complex","ore_a":"3.2","ore_area":"6.8","ore_b":"2.7","alttype":"fenitization","altwidth":"0","comments":"In ore 0.041\u00960.049% U3O8. Ordovician limestone and conglomerate overlie alkalic complex that mostly located underwater at the Nipissing lake. Syenitic dikes cut the fenites.","mineral":[{"role":"ore","name":"apatite"},{"role":"ore","name":"monazite"},{"role":"ore","name":"pyrite"},{"role":"ore","name":"u-pyrochlore"},{"role":"ore","name":"uraninite"},{"role":"gangue","name":"amphibole"},{"role":"gangue","name":"biotite"},{"role":"gangue","name":"calcite"},{"role":"gangue","name":"quartz"}],"reference":["Erdosh, G., 1979, The Ontario carbonatite province and its phosphate potential: Economic Geology, v.74, p. 331\u0096338.","Gittins, J., MacIntyre, R.M., and York, D., 1967, The ages of carbonatite complexes in eastern Canada: Canadian Journal of Earth Science, v. 4, p. 651\u0096655.","Lowdon, J.A., Stockwell, C.H., Tipper, H.W., and Wanless R.K., 1963, Age determination and geological studies: Geological Survey of Canada, Paper 62\u009617, 140 p.","Sage, R., and Watkinson, D.H., 1991, Alkalic rock-carbonatite complexes of the Superior structural province, northern Ontario, Canada: Chronique de la Recherche Miniere, no. 504, p. 5\u009619.","Singer, D.A., 1998, Revised grade and tonnage model of carbonatite deposits: U.S. Geological Survey Open-File Report 98-235, 8 p.","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=17