Commodities
PrimaryVanadium, Uranium
TertiaryLead, Selenium
Commodity typeM
Deposit
Deposit sizeS
Ore controlPermeable Sandstone Underlying Pony Express Limestone
Geology
Host rockSandstone · Entrada Sandstone
Associated rockRhyolite · Rhyolite
StructureParadox Basin, Uncompahgre Uplift, San Juan Volcanic Field, San Miguel Mtns, Placerville Anticline, Frazier Fault, Ross Graben
Tectonic settingColorado Platform
Economic & production
Development statusPast Producer
First production1910
Last production1957
Discovery year1903
Identification
Deposit ID10014241
MRDS IDD010923
Alternate namesPrimos No. 4, MS 19384, Vanadis No. 6,Ms 16864, Primos No. 3, MS 19363, Bear Creek Group, Patented Claims: Vanadis No. 4, MS 16864, Vanadis No.5, MS 16864, Primos A, MS 19304, Primos No. 1, MS 19305, Primos No. 2, MS 19327
RegionNA
Data scoreB
Coordinates37.93444, -107.97676
References
FISCHER, R.P., AND OTHERS, 1947, VANADIUM DEPOSITS NEAR PLACERVILLE, SAN MIGUEL COUNTY, COLORADO: COLORADO SCI. SOC. PROC., V. 15, NO. 3, P. 117-146.BUSH, A.L., AND OTHERS, 1961, PRELIMINARY GEOLOGIC MAP OF THE GRAY HEAD QUADRANGLE, SAN MIGUEL COUNTY, COLORADO: USGS MAP MF-176.NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 405.COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.BLM MINERAL SURVEYS MS 16864, 19304, 19305, 19327, 19363, 19384COLEMAN, R.G., AND DELEVAUX, MARYSE, 1957, OCCURRENCE OF SELENIUM IN SULFIDES FROM SOME SEDIMENTARY ROCKS OF THE WESTERN UNITED STATES: ECON. GEOLOGY, V. 52, P. 499-527.FISCHER AND OTHERS, 1947, P. 133; COLORADO DIV. MINES ANNUAL OPERATOR REPTS,; NELSON-MOORE AND OTHERS, 1978, P. 405.