Description
Stephen Trefone?
Commodities
PrimaryFluorine-Fluorite
TertiaryManganese
Commodity typeB
Deposit
Model174: Fluorspar deposits (fluorite veins)
Deposit sizeM
WorkingsSurface/Underground
Orebody formTABULAR, LENTICULAR, POD-LIKE
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,Rhyolite · Banded Gneiss
Associated rockGneiss,Rhyolite · Gneissic Quartz Monzonite;Ash-Flow Tuff
StructureSouthern Mosquito Range, Arkansas Valley Graben, Folds, Faults; N-Trending Fault Bounding Arkansas Valley; At 100-Ft Level Of Mine Workings Expose Fault With Welded Tuff On One Side, Quartz Monzonite On Other Side
Tectonic settingCentral Cordillera (Southern Rocky Mountains)
AlterationSilicification, Fluoritization
Economic & production
Development statusPast Producer
First production1927
Last production1949
Discovery year1923
Identification
Deposit ID10013776
MRDS IDD010253
Alternate namesAmerican Shaft, Trefone Adit or Tunnel, Mill Adit, Kramer Adit, American Fluorspar Co. Mine, Colorado Fluorspar Co. Mine, Browns Canyon Deposit, Arkansas Claim, Bapp (Bopp) Mine, Browns Canyon or Dostal Mine
RegionNA
Data scoreB
Coordinates38.6325, -106.06671
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 FLOORSPAR DEPOSITS IN COLORADO: USGS MAP MR-70, 1:500,000, TEXTMINE MAP REPO # 404957MICROFILM DOCUMENT 2565: MINERAL DEPOSITS BRANCH IN LIBRARYCONSV. DIV. COMP. DATE, 1,64USGS TOPO MAPS ARKANSAS RIVER SURVEY, 1955, 1: 24,000;ARGALL, 1949, COLO.SCH. MINES QUART., V. 44, NO. 2VANDERWILT, 1947, COLO. MINERAL RES. BOARDCOLO BOM AN RPT 1941, 1943Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.LINTNER, R. E. COLORADO FLUORSPAR MINES, INCORPORATED, SALIDA, COLORADO. DECO TREFOIL MAGAZINE, ENGINEERING NOTE-BOOK BULL. M4-B47, NOVEMBER-DECEMBER 1947, 8 PP.VAN ALSTINE, R. E. (1969)