Colorado · Jefferson County
Past Producer

Schwartzwalder Mine

Jefferson County, Colorado, United States
UraniumMolybdenumBismuthZincLeadCopper
⌖ Show on mapUSGS source ↗
Description

Fred Schwartzwalder

Commodities
PrimaryUranium
SecondaryMolybdenum
TertiaryBismuth, Zinc, Lead, Copper
Commodity typeM
Deposit
Model192: Uranium provinces of North America (definition, distribution, models)
Deposit sizeM
WorkingsUnderground
Orebody formIRREGULAR TO LENTICULAR
Ore controlBreccia Reef, Branching Of Hanging Wall Fissures, Changes In Fissure Dip
Materials
Ore mineralsCoffinite, Molybdenite, Pitchblende, Uraninite
GangueAnkerite, Bornite, Calcite, Chalcopyrite, Galena, Jordisite, Marcasite, Niccolite, Pyrite, Pyrrhotite, Quartz, Sphalerite
Geology
Host rockQuartzite,Schist,Gneiss · Idaho Springs Formation
StructureFront Range Uplift, Colorado Mineral Belt, Idaho Springs-Ralston Shear Zone, Rogers Fault Zone, Illinois Fault System
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationChloritic And Potassic, Silicic; Replacement By Ankerite
Economic & production
Development statusPast Producer
First production1953
Last production2000
Discovery year1949
Identification
Deposit ID10107507
MRDS IDD008019
Alternate namesRalston Creek Mine
RegionNA
Data scoreA
Coordinates39.84467, -105.2811
References
YOUNG, E.J., 1977, GEOLOGIC, RADIOMETRIC, AND MINERALOGIC MAPS AND UNDERGROUND WORKINGS OF THE SCHWARTZWALDER URANIUM MINE AND AREA, JEFFERSON COUNTY, COLORADO: USGS OPEN-FILE REPT. 77-725, 38 P.DOWNS, G.R., AND BIRD, A.G., 1965, THE SCHWARTZWALDER URANIUM MINE, JEFFERSON COUNTY, COLORADO: MTN. GEOLOGIST, V. 2, NO. 4, P. 183-191.SHERIDAN, D.M., AND OTHERS, 1967, GEOLOGY AND URANIUM DEPOSITS OF THE RALSTON BUTTES DISTRICT, JEFFERSON COUNTY, COLORADO: USGS PROF. PAPER 520.NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULL. 40, P. 194-195.Stahl, R.L, 1974, Detection and delineation of faults by surface resistivity measurements--Schwartzwalder Mine, Jeffereson County, Colo.: U.S. BUREAU OF MINES REPORT RI 7975, 27 p.Cotter Corp. corporate info., accessed from internet on 12/02/2005\n[As of 08-JUL-2010 the website is www.cotterusa.com.]SIMS, P.K., AND SHERIDAN, D.M., 1964, GEOLOGY OF URANIUM DEPOSITS IN THE FRONT RANGE, COLORADO: USGS BULL. 1159, P. 87-92.Soule, J.H., 1960, Mining methods and costs, Schwartzwalder uranium mine, Jefferson County, Colo.: U.S. BUREAU OF MINES IC 7963, 24 p.Sims, P.K., 1963, Geology of uranium and associated ore deposits, central part of the Front Range mineral belt, Colorado: USGS Professional Paper 371, 119 p.