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ID: 1088
rec_id: 1088
site_name: Iron Hill carbonatite complex
oremin: Fibrous blue magnesio-arfvedsonite and richterite are found in the groundmass, often occurring as large mats"" (Lowers, 2005, p. 23)
devel: outcrops
json: {"id":"http:\/\/mrdata.usgs.gov\/asbestos\/record\/1088","type":"Feature","geometry":{"type":"Point","coordinates":[-107.0510047445,38.248894409053]},"properties":{"state":"CO","county":"Gunnison","site_name":"Iron Hill carbonatite complex","devel":"outcrops","latitude":"38.2489","longitude":"-107.0504","oremin":"Fibrous blue magnesio-arfvedsonite and richterite are found in the groundmass, often occurring as large mats\"\" (Lowers, 2005, p. 23)","assocmin":"calcite, dolomite, apatite, biotite, iron-titanium oxides, barite, pyroxene, pyrite","hostrock":"mixed zone along carbonatite-pyroxenite contact","mineral":[{"role":"asbestos","name":"richterite"},{"role":"associated","name":"calcite"},{"role":"associated","name":"dolomite"},{"role":"associated","name":"apatite"},{"role":"associated","name":"biotite"},{"role":"associated","name":"iron-titanium oxides"},{"role":"associated","name":"barite"},{"role":"associated","name":"pyroxene"},{"role":"associated","name":"pyrite"}],"reference":[{"citation":"Olson and Wallace (1956)","onlink":"http:\/\/pubs.er.usgs.gov\/publication\/b1027O","source":"ofr20071182","reference":"Olson, J.C., and Wallace, S.R., 1956, Thorium and rare-earth minerals in the Powderhorn district, Gunnison County, Colorado: U.S. Geological Survey Bulletin 1027-O, 28 p., 2 plates."},{"citation":"Temple and Grogan (1965)","onlink":"http:\/\/econgeol.geoscienceworld.org\/cgi\/reprint\/60\/4\/672","source":"ofr20071182","reference":"Temple, A.K., and Grogan, R.M., 1965, Carbonatite and related alkalic rocks at Powderhorn, Colorado: Economic Geology, v. 60, no. 4, p. 672-692."},{"citation":"Nash (1972)","onlink":"http:\/\/gsabulletin.gsapubs.org\/content\/83\/5\/1361.full.pdf+html","source":"ofr20071182","reference":"Nash, W.P., 1972, Mineralogy and petrology of the Iron Hill carbonatite complex, Colorado: Geological Society of America Bulletin, v. 83, no. 5, p. 1361-1382."},{"citation":"Olson (1974)","onlink":"http:\/\/pubs.er.usgs.gov\/publication\/gq1177","source":"ofr20071182","reference":"Olson, J.C., 1974, Geologic map of the Rudolph Hill quadrangle, Gunnison, Hinsdale, and Saguache Counties, Colorado: U.S. Geological Survey Geologic Quadrangle Map GQ-1177, scale 1:24,000."},{"citation":"Hedlund and Olson (1975)","onlink":"http:\/\/pubs.er.usgs.gov\/publication\/gq1178","source":"ofr20071182","reference":"Hedlund, D.C., and Olson, J.C., 1975, Geologic map of the Powderhorn quadrangle, Gunnison and Saguache Counties, Colorado: U.S. Geological Survey Geologic Quadrangle Map GQ-1178, scale 1:24,000."},{"citation":"Armbrustmacher (1980)","onlink":"http:\/\/pubs.er.usgs.gov\/publication\/pp1049B","source":"ofr20071182","reference":"Armbrustmacher, T.J., 1980, Abundance and distribution of thorium in the carbonatite stock at Iron Hill, Powderhorn district, Gunnison County, Colorado: U.S. Geological Survey Professional Paper 1049-B, 11 p."},{"citation":"Olson and Hedlund (1981)","onlink":"http:\/\/pubs.er.usgs.gov\/publication\/pp1049C","source":"ofr20071182","reference":"Olson, J.C., and Hedlund, D.C., 1981, Alkalic rocks and resources of thorium and associated elements in the Powderhorn district, Gunnison County, Colorado: U.S. Geological Survey Professional Paper 1049-C, 34 p."},{"citation":"White-Pinilla (1996)","source":"ofr20071182","reference":"White-Pinilla, K.C., 1996, Characterization of fenitizing fluids and processes involved in fenitization at the Iron Hill carbonatite complex, Gunnison County, Colorado: Golden, Colo., Colorado School of Mines, M.S. thesis, 170 p."},{"citation":"Cappa (1998)","source":"ofr20071182","reference":"Cappa, J.A., 1998, Iron Hill alkalic complex, Powderhorn district (Chapter 7), in Cappa, J.A., Alkalic igneous rocks of Colorado and their associated ore deposits: Colorado Geological Survey Resource Series 35, p. 61-68."},{"citation":"Shaver and Lunceford (1998)","source":"ofr20071182","reference":"Shaver, K.C., and Lunceford, R.A., 1998, White Earth Project, Colorado--The largest titanium resource in the United States: Canadian Industrial Minerals Bulletin, v. 91, p. 63-65."},{"citation":"Lowers (2005)","source":"ofr20071182","reference":"Lowers, H.A., 2005, Origin of fibrous amphiboles in the Iron Hill carbonatite complex, Gunnison County, Colorado: Golden, Colo., Colorado School of Mines, M.S. thesis, 159 p."},{"citation":"Van Gosen and others (2005)","onlink":"http:\/\/pubs.er.usgs.gov\/publication\/b2192","source":"ofr20071182","reference":"Van Gosen, B.S., Lowers, H.A., Bush, A.L., Meeker, G.P., Plumlee, G.S., Brownfield, I.K., and Sutley, S.J., 2005, Reconnaissance study of the geology of U.S. vermiculite deposits--Are asbestos minerals common constituents?: U.S. Geological Survey Bulletin 2192, 8 p."}]}}
url: https://mrdata.usgs.gov/asbestos/show-asbestos.php?rec_id=1088