| Lat / long: | 38.41722, -106.82868 |
| 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 |
| Operation type: | Unknown |
| Production size: | Yes |
| Development status: | Past Producer |
| 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. |
| MRDS | D009270 |
| DEP | 10013140 |
| 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} |
| Reporter | Schwochow, Stephen D. |