Falcon Mine

Dolores County, Colorado, United States

ZincSilverLeadCopperGoldManganese

⌖ Show on map USGS source ↗

Description

C.H. Rawles And Others (Alma Mater Claimants)

Commodities

PrimaryZinc, Silver, Lead

SecondaryCopper, Gold

TertiaryManganese

Commodity typeM

Deposit

Model72: Polymetallic replacement

Deposit sizeS

Ore controlChemically Favorable Limestone Near Faults

Materials

Ore mineralsChalcopyrite, Pyrite, Sphalerite

GangueCalcite, Chlorite, Quartz, Tremolite

Geology

Host rockQuartzite,Shale,Sandstone,Limestone · Hermosa Formation;Uncompahgre Quartzite

Associated rockLatite · Hornblende Latite Porphyry

StructureSan Juan Uplift, Paradox Basin, Rico Dome, Smelter Fault, Last Chance Fault, Yellow Jacket Fault, Nellie Bly Fault

Tectonic settingCentral Cordillera (Southern Rocky Mtns)

AlterationOxidation Of Galena To Cerussite

Economic & production

Development statusPast Producer

First production1880

Last production1949

Discovery year1877

Identification

Deposit ID10014124

MRDS IDD010767

Alternate namesAmerica, Flynn, Godet, Lillian, Little, Isabel, Job Cooper, Nutmeg, Yellow Jacket, MS 364, Grand View, MS 383, Nora Lilly, MS 1010, Ben Harrison, Ingersoll, MS 413, Hope, MS 939, Cross, MS 940, Pittsburgh, MS 941, Falcon, MS 2151, Dayton, MS 2540, Last Chance, MS 8622, Dayton No. 2, MS 11636, Grand View Group, Patented Claims: Alma Mater No. 2, MS 349, Phoenix, MS 362, Pelican, MS 363, Unpatented Claims: Artie, AmazonAlma, Fate, Frances, Major, MS 384

RegionNA

Data scoreB

Coordinates37.69612, -108.02315

References

RANSOME, F.L., 1901, THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2, P. 375-379.MCKNIGHT, E.T., 1974, GEOLOGY AND ORE DEPOSITS OF THE RICO DISTRICT, COLORADO: USGS PROF. PAPER 723, P. 91-92.PRATT, W.P., AND OTHERS, 1969, GEOLOGIC MAP OF THE RICO QUADRANGLE, DOLORES AND MONTEZUMA COUNTIES, COLORADO: USGSCROSS, WHITMAN, AND RANSOME, F.L., 1905, DESCRIPTION OF THE RICO QUADRANGLE: USGS FOLIO 130.BLM MINERAL SURVEYS MS 349, 362, 363, 364, 383, 384, 413, 939, 941, 1010, 2151, 2540, 8622, 11636COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.COLORADO DIV. MINES ANNUAL OPERATOR REPTS.