Abandoned gold mine records in Conejos County
1 record marked abandoned by MSHA. They are listed for reference only. Land status is from BLM's public dataset and can be out of date; being on public land is not permission to enter old workings.
Show the 1 abandoned records
| Name | Type | Status since | Nearest town | Land | USGS record |
|---|---|---|---|---|---|
| Platoro Mine | underground | Aug 6, 1991 | n/a | n/a | n/a |
Historic gold producers in Conejos County (USGS)
USGS records 30 historic gold producers in Conejos County: 27 past producers and 3 listed as producers or plants. For 12 of them USGS gives an output size (12 small). Production years are recorded for 4 sites, from 1870 to 1974. The most common deposit type is epithermal quartz-alunite Au (8 sites).
Show the 30 sites
| Site | USGS status | Output | Commodities | Years |
|---|---|---|---|---|
| Ute District | Producer | small | Silver, Gold, Lead, Copper, Tellurium, Antimony, Molybdenum, Zinc | 1880 to 1974 |
| Mammoth-Revenue Mine | Producer | small | Gold, Silver, Lead, Copper, Antimony, Zinc, Molybdenum | n/a |
| Decatur West District | Past producer | small | Gold, Silver, Aluminum, Copper, Lead, Molybdenum, Tin, Antimony, Zinc | 1870 to 1938 |
| Decatur South District | Past producer | small | Gold | found 1912 |
| Emma Mine | Past producer | small | Silver, Gold, Copper | found 1881 |
| Eurydice Mine | Past producer | small | Gold, Silver, Copper, Lead | to 1938 |
| Forest King Mine | Past producer | small | Gold, Silver, Copper, Lead, Antimony, Molybdenum, Zinc | n/a |
| Glacier Mine | Past producer | small | Silver, Gold, Copper, Lead, Molybdenum, Zinc, Antimony | to 1918 |
| Lake View Claim | Past producer | small | Gold, Silver, Copper, Lead, Molybdenum, Zinc, Antimony | n/a |
| Merrimac Mine | Past producer | small | Gold, Silver, Lead, Copper, Zinc, Molybdenum, Antimony | n/a |
| Parole Mine | Past producer | small | Gold, Silver, Copper, Lead, Antimony, Molybdenum, Zinc | n/a |
| Valley Queen Mine | Past producer | small | Silver, Gold, Copper, Lead, Zinc, Antimony, Molybdenum | n/a |
| Mammoth Revenvue Mine | Producer | n/a | Gold, Copper, Silver, Zinc | n/a |
| Asiatic | Past producer | n/a | Gold | n/a |
| Cliff | Past producer | n/a | Gold, Copper, Iron, Silver | n/a |
| Congress | Past producer | n/a | Gold, Copper, Lead, Silver | n/a |
| Eurydice Shaft | Past producer | n/a | Gold, Lead, Silver, Zinc, Copper | n/a |
| Forest King | Past producer | n/a | Gold, Molybdenum, Silver | n/a |
| Gilmore | Past producer | n/a | Gold, Copper, Lead, Silver | n/a |
| Glacier | Past producer | n/a | Gold, Silver | n/a |
| Lake View | Past producer | n/a | Gold, Silver | n/a |
| Mammoth | Past producer | n/a | Gold, Molybdenum, Silver | n/a |
| Mammoth | Past producer | n/a | Gold, Silver | n/a |
| Merrimac | Past producer | n/a | Gold, Molybdenum, Silver | n/a |
| Parole | Past producer | n/a | Gold, Copper, Lead, Silver | n/a |
| Pass-Me-By | Past producer | n/a | Gold | n/a |
| Platoro Project | Past producer | n/a | Gold, Silver | n/a |
| Siskiyon | Past producer | n/a | Gold, Silver | n/a |
| Unk | Past producer | n/a | Gold, Silver | n/a |
| Valley Queen | Past producer | n/a | Gold, Silver | n/a |
Source: USGS Mineral Resources Data System (retrieved 2026-10-13). The database was last updated around 2011, positions can be approximate and "producer" does not mean a mine is operating today. Sites already matched to an MSHA record are shown in the MSHA tables.
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