| Location: | Costilla County, Colorado, United States, North America |
| Lat / long: | 37.61113, -105.27612 |
| dep_id: | 10011663 |
| mrds_id: | D006732 |
| Commodity type: | metallic |
| Major mineral: | Iron |
| Minor mineral: | Gold, Silver |
| Operation type: | Underground |
| Deposit type: | Replacement |
| Production size: | Small ammount of material produced |
| Development status: | Past Producer |
| ore: | Hematite, Magnetite |
| gangue: | Calcite, Chlorite, Epidote, Garnet |
| orebody_fm: | moderately dipping layer |
| model: | 62: Skarn Fe |
| conc_proc: | Differential Replacement Of Calcite By Iron-Bearing Solutions Following Cooling And Consolidation Of Intrusion And After Metamorphism Of Limestones |
| ore_ctrl: | Fault, Igneous Intrusion |
| Reporter: | Schwochow, Stephen D. |
| hrock_unit: | Minturn Formation |
| hrock_type: | Limestone |
| arock_unit: | Monzonite Porphyry |
| arock_type: | Monzonite |
| Structure: | Sierra Blanca Massif, Ft. Garland Embayment, Vega Cr. Anticline, Wagon Mesa Fault |
| tectonic: | Central Cordillera (Southern Rocky Mtns.) |
| References: |
- 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, OCCURRENCE OF NONPEGMATITIC BERYLLIUM IN THE UNITED STATES: USGS PROF. PAPER 318, P. 165.
- Deposit:: HARRER; C.M., AND TESCH, W.J., JR., 1959, RECONNAISSANCE OF IRON OCCURRENCES IN COLORADO: USBM 1C-7918, P. 22.
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