Commodities
PrimarySilver, Lead, Zinc
SecondaryCopper, Gold
TertiaryManganese
Commodity typeM
Deposit
Model72: Polymetallic replacement
Deposit sizeS
Orebody formTABULAR
Ore controlLimestone And Shale Breccia Below Impermeable Shale Above Ne- And Nw-Trending Fissures
Materials
GangueQuartz, Rhodochrosite, Rhodonite
Geology
Host rockShale · Hermosa Formation
Associated rockLatite · Hornblende Latite Porphyry
StructureSan Juan Uplift, Paradox Basin, Rico Dome
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
AlterationOxidation Of Rhodochrosite To Mn Oxides; Alteration Of Ag Sulfides To Native Ag
Economic & production
Development statusPast Producer
First production1879
Discovery year1879
Identification
Deposit ID10014134
MRDS IDD010779
Alternate namesSwansea, Klingender, and Chestnut Tunnels, Patented Claims: Swansea, MS 434, Chestnut, MS 435, Newman, MS 436a
RegionNA
Data scoreB
Coordinates37.68279, -108.02732
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. 328-334.CROSS, WHITMAN, AND RANSOME, F.L., 1905, DESCRIPTION OF THE RICO QUADRANGLE: USGS FOLIO 130.BLM MINERAL SURVEYS MS 434, 435, 436A&B