Colorado · Dolores County
Past Producer

Union-Carbonate Mine

Dolores County, Colorado, United States
LeadSilverZincCopperGold
⌖ Show on mapUSGS source ↗
Commodities
PrimaryLead, Silver, Zinc
SecondaryCopper, Gold
Commodity typeM
Deposit
Model72: Polymetallic replacement
Deposit sizeS
Orebody formTABULAR
Ore controlBedding Fault In Shale; Intersection Of Shale And Nw-Trending Faults
Materials
Ore mineralsChalcopyrite, Pyrite, Sphalerite
GanguePrehnite, Quartz, Sulfur
Geology
Host rockShale,Sandstone,Limestone,Latite · Hermosa Formation
Associated rockLatite · Hornblende Latite Porphyry
StructureSan Juan Uplift, Paradox Basin, Rico Dome
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationOxidation Of Pb Sulfide To Carbonate; Alteration Of Pyrite; Silicification
Economic & production
Development statusPast Producer
First production1887
Last production1937
Discovery year1877
Identification
Deposit ID10014144
MRDS IDD010792
Alternate namesDiamond Dyes, Diamond H., Copper Dollar, Buckhorn Tunnel, Patented Claims: Union, MS 5376, Carbonate, MS 5376, Zach Taylor, MS 5376, Fickle Goddess, MS 7330, Iron Silver, MS 7330, Chauncey, MS 7330, Unpatented Claims: Incas, Toltec, G. R., Drummer Boy, State, Parnell, GreenhornBuckhorn, Buckhorn No. 2
RegionNA
Data scoreA
Coordinates37.69195, -108.01315
References
MCKNIGHT, E.T., 1974, GEOLOGY AND ORE DEPOSITS OF THE RICO DISTRICT, COLORADO: USGS PROF. PAPER 723, P. 73-75.PRATT, W.P., AND OTHERS, 1969, GEOLOGIC MAP OF THE RICO QUADRANGLE, DOLORES AND MONTEZUMA COUNTIES, COLORADO: USGS MAP GQ-797.RANSOME, F.L., 1901, THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2, P. 341-346CROSS, WHITMAN, AND RANSOME, F.L., 1905, DESCRIPTION OF THE RICO QUADRANGLE: USGS FOLIO 130.COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.BLM MINERAL SURVEYS MS 5376, 7330COLORADO DIV. MINES ANNUAL OPERATOR REPTS.