| Lat / long: | 38.49695, -105.69947 |
| Primary: | Copper |
| Secondary: | Silver |
| Tertiary: | Vanadium |
| Ore: | Chalcocite, Malachite, Silver |
| Gangue: | Barite |
| Discovery year: | 1875 |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1907 |
| Last production ended: | 1907 |
| Host rock: | Minturn Formation, Belden Formation;Harding Sandstone; Manitou Limestone (?) |
| Host type: | Shale,Siltstone,Sandstone |
| Associated type: | Conglomerate,Black Shale |
| Structure: | Thirtynine Mile Volcanic Field, Cotopaxi Fault, Nearby Fault Is Barren; North-Trending Faults East Of But Near Cotopaxi Fault |
| Tectonic: | Central Cordillera (Southern Rocky Mountains) |
| Alteration processes: | Oxidized To Reddish, Yellowish, Or Red-Brown Color |
| MRDS | D009479 |
| DEP | 10013269 |
| Reference | {Deposit:: LINDGREN, WALDEMAR, 1908, NOTES ON COPPER DEPOSITS IN CHAFFEE, FREMONT, AND JEFFERSON COUNTIES, COLORADO: USGS BULLETIN 340, P. 170-174.}{Deposit:: BUTLER, J.R., 1954, GEOLOGY OF AN AREA NORTH OF COTOPAXI, FREMONT COUNTY, COLORADO: M. S. THESIS, UNIVERSITY OF COLORADO, P. 47-48}{Deposit:: TAYLOR, R.B., SCOTT, G.R., WOBUS, R.A., EPIS, R.C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE COTOPAXI 15-MINUTE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-900, 1:62,500.} |
| Reporter | Collins, Donna B., Keller, John W. |