| Lat / long: | 37.61196, -105.27112 |
| Primary: | Iron |
| Secondary: | Gold, Silver |
| Tertiary: | Copper |
| Ore: | Hematite, Magnetite |
| Gangue: | Calcite, Chlorite, Epidote, Garnet, Pyrite |
| Orebody form: | TABULAR |
| Operation type: | Underground |
| Deposit type: | Replacement |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1877 |
| Last production ended: | 1883 |
| Host rock: | Minturn Formation |
| Host type: | Limestone |
| Associated rock: | Monzonite Porphyry |
| Associated type: | Monzonite |
| Structure: | Sierra Blanca Massif, Ft. Garland Embayment, Vega Cr. Anticline, Wagon Mesa Fault |
| Tectonic: | Central Cordillera (Southern Rocky Mtns.) |
| Alteration processes: | Limonite In Irregular Zone At Base Of Magnetite Ore; Some Copper Carbonate |
| MRDS | DC02744 |
| DEP | 10017027 |
| Reference | {Deposit:: PATTON, H.B., AND OTHERS, 1910, GEOLOGY OF THE GRAYBACK MINING DISTRICT, COSTILLA COUNTY, COLORADO: CGS BULL. 2.}{Deposit:: WARNER, L.A., AND OTHERS, 1959, OCCURRENCES OF NONPEGMATITIC BERYLLIUM IN THE UNITED STATES: USGS PROF. PAPER 3182 P. 165.}{Deposit:: HARPER, C.M., AND TESCH, W.J., JR., 1959, RECONNAISSANCE OF IRON OCCURRENCES IN COLORADO: USBM IC-7918, P. 22.}{Deposit:: CONSV. DIV. COMP. DATE, 1,64}{Production:: HARPER AND TESCH, 1959} |
| Reporter | Schwochow, Stephen D. |