Mine detail: Jamestown District

Previously called 'CentralJimtown'

Location:	Boulder County, Colorado, United States, North America
Lat / long:	40.1272, -105.38809
dep_id:	10008720
mrds_id:	D001069
mas_id:	80137015
Commodity type:	metallic and nonmetallic
Major mineral:	Gold, Fluorine-Fluorite
Minor mineral:	Silver, Lead, Copper, Uranium
Trace mineral:	Tungsten, Tellurium, Molybdenum
Operation type:	Surface-Underground
Development status:	Past Producer
ore:	Gold, Fluorite, Telluride, Pyrite, Galena, Tetrahedrite
gangue:	Quartz
model:	84: Alkaline Au-Te (Au-Ag-Te veins)
alteration:	sericitic and silicified wall rocks
Reporter:	Beach, Richard A.
hrock_unit:	Idaho Springs Formation, Swandyke hornblends gneiss, Boulder Creek , Overland Mountain, and Silver Plume granites
hrock_type:	Mica Schist,Mafic Gneiss,Granite,Granodiorite
arock_unit:	sodic granite-quartz monzonite porphyry of Porphyry Mtn
arock_type:	Alkali-Granite (Alaskite)
Structure:	through-going NW-trending faults
References:	Commodity:: Nelson-Moore, J.L., Collins, D.B., and Hornbaker, A.L., 1978, Radioactive mineral occurrences of Colorado: Colorado Geological Survey Bulletin 40, 1054 p., 12 pl. Deposit:: LEMMON, D.M. AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25 Deposit:: Goddard, E. N., 1946, Fluorspar Deposits of the Jamestown District, Boulder County, Colorado: Colorado Scientific Society Proceedings, v. 15, no.1, 47 p. Deposit:: Vanderwilt, J.W., 1947, Mineral resources of Colorado: State of Colorado Mineral Resources Board, 547 p. Geology:: Lovering, T. S., and Goddard, E. N., 1950, Geology and Ore Deposits of the Front Range, Colorado: U.S. Geological Survey Professional Paper 223, 319 p. Names:: Dunn, L.G, 2003, Colorado mining districts: A reference: Golden, Colo., Colorado School of Mines Library, 364 p. Production:: Brady, B. T., 1975, Map showing fluorspar deposits in Colorado: U.S. Geological Survey Mineral Investigations Resources Map MR-70. Production:: Koschmann, A. H., and Bergendahl, M. H., 1968, Principal gold-producing districts of the United States: U.S. Geological Survey Professional Paper 610, 283 p. Reserve-Resource:: Sunshine Mining Co. Colorado exploration files, file ID 14, Boulder County, Jamestown project, unpublished data, available at Colorado Geological Survey.