Mine detail: Colosseum Mine

Previously called 'Ivanpah Consolidated Mine'

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Location

Lat / long: 35.57, -115.56556

Resource(M)

Primary: Gold, Silver
Secondary: Copper
Tertiary: Lead, Arsenic, Antimony, Zinc
Ore: Gold, Electrum, Chalcopyrite, Galena, Silver
Gangue: Quartz, Pyrite, Siderite, Iron, Goethite, Sericite, Barite, Quartzite, Granite, Gneiss, Andesite, Shale, Dolomite
Orebody form: Pipe
Discovery year: 1865

Production

Operation type: Surface-Underground
Deposit type: Hydrothermal breccia-filling (hydrothermal pipe)
Production size: Large
Development status: Past Producer

Geology

Host type:Felsic Volcanic Rock
Associated type:Gneiss,Schist,Sedimentary Rock,Andesite
Tectonic:The Colosseum Mine is located at the southern end of the Sevier foreland thrust belt in the southern Basin and Range Province. Gold mineralization occurred about 100 Ma in earliest Late Cretaceous time (post-Sevier thrusting/pre-Basin and Range extensional tectonics), probably in association with one of several shallow-level, early Late Cretaceous stocks that appear to represent northeastern outliers of the magmatic belt that comprises the broadly calc-alkaline series of six plutons that comprise the Teutonia Batholith (Sharp, 1984; Haxel and Miller, 2006).
Alteration processes:Quartz-sericite-pyrite

References

DEP10310702
Reference{Deposit:: Beatty, R.L., 1989a, Bond Gold Colosseum Inc., crushing and grinding: an update: Society of Mining Engineers Preprint No. 89-85 for presentation at SME Annual Meeting, Las Vegas, NV Feb. 27 - Mar. 2, 1989, 6 pgs.}{Deposit:: Beatty, R.L., 1989b, Crushing and grinding at Bond Gol* Colosseum mine: an update: Society for Mining, Metallurgy, and Exploration, Mining Engineering, August 1989, pgs. 823-826.}{Deposit:: Britton, Vickie, 1986, Colosseum Mine plans to open: California Mining Journal, September 1986, pgs. 50-51.}{Deposit:: Burchfiel, B.C. and Davis, G.A., 1988, Mesozoic thrust faults and Cenozoic lowangle normal faults, eastern Spring Mountains Nevada, and Clark Mountains thrust complex, California in This Extended Land: Geological journeys in the southern Basin and Range, Field Trip[ guidebook, Geological Society of America, Western Cordilleran Section, Las Vegas, Nevada, p. 8710.}{Deposit:: California Polytechnic University - Pomona (CSU), site visited August 2006, Colosseum Mine in Ivanpah Mining District: CSU Geological Sciences Department, Pomona, http://geology.csupomona.edu/drjessey/fieldtrips/mtp/coloss.htm.}{Deposit:: Davis, B.M., Trinble, J., and McClure, D., 1989, Grade control and ore selection practices at the Colosseum gold mine: Society for Mining, Metallurgy, and Exploration, Mining Engineering, August 1989, pgs. 827-830.}{Deposit:: Dingwall, Laima, 1986, Aussie-made for N. America new Colosseum Gold Mines: Northern Miner, July 21, 1986.}{Deposit:: Dobbs, P.H., 1961, Geology of the central part of the Clark Mountain range, San Bernardino County, California, Unpublished M.S. Thesis, University of Southern California, 116p.}{Deposit:: Ely, Marion, 1982, Notice of reclamation plan completion, new Colosseum mine: Notice dated January 5, 1982, and submitted to the California Division of Mines and Geology; copy contained in CGS (formerly CDMG) Minefile Folder No. 322-5560.}{Deposit:: Garside, L.J., and Bonham, H.F., Jr., 1987, Precious metal deposits in southeastern California and southern and west-central Nevada in Johnson, J.L., Ed., 1997, A Symposium on Bulk Mineable Precious Metal Deposits of the Western United States, Guidebook for Field Trips, Field Trip 2: Geological Society of Nevada, April 6-8, 1987, Symposium, Field Trip 2, pgs. 70-71.}{Deposit:: Haxel, G. B., and Miller, D. M., 2006, Mesozoic rocks: Internet site, http://www2.nature.nps.gov/geology/USGSNPS/mojave/MESOmoja.pdf.}{Deposit:: Hewett, D.F., 1956, Geology and mineral resources of the Ivanpah Quadrangle, California and Nevada: U. S. Geological Survey Professional Paper 275, 172 p.}{Deposit:: Hill, R.L., 1998, Gold in the California desert, past, present, and future: California Division of Mines and Geology (aka California Geological Survey), California Geology, vol. 51, no. 1, pgs. 14-25.}{Deposit:: http://www.epa.gov/epaoswer/other/mining/techdocs/gold.htm; Chapter 3: Site Visit Report: Colosseum Mine [PDF, 48 pages, 578 KB]; http://www.epa.gov/epaoswer/other/mining/techdocs/gold/goldch3.pdf.}{Deposit:: McClure, D.L., and Schull, H.W., 1988, Colosseum Gold Mine, Clark Mountain range, San Bernardino County, California: Society of Mining Engineers Preprint Number 88119, SME Annual Meeting, Phoenix, AZ, 4p.}{Deposit:: Mining Engineering, September 1987, US and International Mineral News Briefs, pg. 844.}{Deposit:: Moyle, P.R., and Cather, E.E., 1992, Colosseum mine another new discovery in U.S. Bureau of Mines Open File Report 62-92, pgs. 38-43.}{Deposit:: Portions of various unpublished reports, and information from various Internet websites, contained in CGS (formerly CDMG) Minefile Folder No. 322-5560.}{Deposit:: Sharp, J.E., 1984, A gold mineralized breccia pipe complex in the Clark Mountains, San Bernardino County, California: Arizona Geological Society Digest, Vol. 15, pgs. 119-139.}{Deposit:: Skillings Mining Review, Feb. 21, 1987, pg. 7.}{Deposit:: Sunshine Mine Files, Colosseum Mine, Box #3, housed with CGS (formerly CDMG) Minefile Data.}{Deposit:: Tucker, W.B. and Gowman, C.H., December 29, 1942, Field Report No. 371: State Mining Bureau in CGS Minefile Folder #322-5560.}{Deposit:: U. S. Environmental Protection Agency, 2006, Technical Resource Document: Extraction and Beneficiation of Ores and Minerals: Gold}{Deposit:: U.S. Environmental Protection Agency (EPA), 1992, Site Visit Report: Colosseum Mine: U.S. EPA, Office of Solid Waste, 401 M Street SW, Washington, DC 20460, 47 pgs.}
ReporterSchruben, Paul G., Hill, Robert L.