Mine detail: Denver City Mine

Previously called 'Patented Claim: Denver CityMs 11792'

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Location

Lat / long: 38.41722, -106.82868

Resource(M)

Primary: Zinc, Copper, Silver
Secondary: Gold, Lead
Tertiary: Selenium, Tellurium
Ore: Chalcopyrite, Galena, Pyrite, Sphalerite
Gangue: Calcite, Chlorite, Pyrrhotite, Quartz, Sericite
Orebody form: LENTICULAR
Discovery year: 1898

Production

Operation type: Unknown
Production size: Yes
Development status: Past Producer

Geology

Host rock:Dubois Greenstone--Felsite And Felsite Porphyry;Dubois Greenstone--Amphibolite;Metasedimentary Rocks
Host type:Felsic Volcanic Rock,Rhyolite
Associated rock:Quartz Diorite To Quartz Monzonite Of Gold Basin
Associated type:Quartz Monzonite,Diorite
Structure:Gunnison Uplift; San Juan Volcanic Field, Gunnison Gold Belt, Iris Syncline, Lulu Fault, Gold Basin Stock
Tectonic:Central Cordillera (Southern Rocky Mtns)
Alteration processes:Near Best Mineralization, Calcite Occurs As Alteration Replacement And Interstratifies With Sulfides And Tuffaceous Material. Quartz-Chlorite (Propylitic) Alteration Is Partly Sericitic. Silicification (Replacement And Veining) Ranges From Minor To Predominant. Some Argillization.

References

MRDSD009270
DEP10013140
Reference{Deposit:: OLSON, J.C., 1976, GEOLOGIC MAP OF THE IRIS QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1286}{Deposit:: DROBECK, P.A., 1981, PROTEROZOIC SYNGENETIC MASSIVE SULFIDE DEPOSITS IN THE GUNNISON GOLD BELT, COLORADO, IN EPIS, R.C., AND CALLENDER, J.F., EDS., WESTERN SLOPE COLORADO: NEW MEXICO GEOL. SOC. 32D FIELD CONF. GUIDEBOOK, P. 279-286.}{Deposit:: DROBECK, P.A., 1979, GEOLOGY AND TRACE ELEMENT GEOCHEMISTRY OF A PART OF THE GUNNISON GOLD BELT, COLORADO: COLORADO SCHOOL OF MINES M.SC. THESIS T-2251, P. 22-47.}{Deposit:: SCHWARZ, T.E., 1906, REPORT ON THE DENVER CITY PROPERTY, SAGUACHE COUNTY, COLORADO: COLORADO STATE PLANNING COMM. UNPUB. REPT., S.P.}{Deposit:: 5) AFIFI, A.M., 1981, STRATIGRAPHY, PETROLOGY, AND STRUCTURE OF PRECAMBRIAN METAVOLCANIC ROCKS IN THE IRIS DISTRICT, GUNNISON AND SAGUACHE COUNTIES, COLORADO, IN EPIS, R.C., AND CALLENDER, J.F., EDS., WESTERN SLOPE COLORADO: NEW MEXICO GEOL. SOC. 32D FIELD CONF. GUIDEBOOK, P. 287-292.}{Deposit:: 6) RIESMEYER, W.D., 1978, GEOLOGIC MAP OF THE DENVER CITY AREA: UNPUB. MAP.}{Deposit:: 7) BLM MINERAL SURVEY MS 11792}
ReporterSchwochow, Stephen D.