Commodities
PrimaryFluorine-Fluorite
TertiaryManganese
Commodity typeB
Deposit
Model174: Fluorspar deposits (fluorite veins)
Deposit sizeS
WorkingsSurface/Underground
Ore controlFault Breccia; Fault Zone Striking N 30-50 W, Dipping 65-85 Sw; Fractures
Materials
Ore mineralsFluorite
GangueBarite, Calcite, Goethite, Hematite, Kaolinite, Manganite, Montmorillonite, Opal, Psilomelane, Pyrite, Pyrolusite, Quartz
Geology
Host rockGneiss,Claystone,Siltstone,Arkose,Tuff · Banded Gneiss;Browns Canyon Formation
Associated rockGneiss,Rhyolite · Gneissic Quartz Monzonite;Ash-Flow Tuff
StructureSouthern Mosquito Range, Arkansas Valley Graben, Folds, Faults; N-Trending Fault Bounding Arkansas Valley
Tectonic settingCentral Cordillera (Southern Rocky Mountains)
AlterationSilicification, Fluoritization
Economic & production
Development statusPast Producer
First production1936
Last production1950
Discovery year1923
Identification
Deposit ID10013772
MRDS IDD010246
Alternate namesMorgan Ranch Deposits, Manganese, U.S. Fluorspar Co. Mine, Chaffee County Fluorspar Mine
RegionNA
Data scoreA
Coordinates38.64667, -106.08032
References
VAN ALSTINE, R. E., 1969, GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS NE QUADRANGLE, CHAFFEE COUNTY, COLORADO: USGS PROFESSIONAL PAPER 626, 52 P.VAN ALSTINE, R. E. AND COX, D. C., 1969, FLUORSPAR MINES AND PROSPECTS, IN, GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS NE QUADRANGLE, CHAFFEE COUNTY, COLORADO: USGS PROFESSIONAL PAPER 626, P. 38-43BRADY, B. T., 1975, MAP SHOWING FLUORSPAR DEPOSITS IN COLORADO: USGS MAP MR-70, 1:500,000, TEXTARGALL, 1949, COLO. SCH. MINES QUART., V. 44, NO. 2CONSV. DIV. COMP. DATE, 1,64USGS TOPO MAPS, ARKANSAS RIVER SURVEY, 1955, 1: 24,000, 1961DMEA RECORDSUSBM MINERAL EXAM. FILECOLO BOM AN RPT 1941, 1956MINE MAP REPO # 404949Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.VAN ALSTINE, R. E. (1969)