RockWoofFound alongside
Agate
Mohs 6.5–7. Banded, translucent chalcedony. Mindat
33 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
24 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
21 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
19 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
19 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
16 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Conejos County (5) · Chaffee County (4) · Custer County (3) · La Plata County (3) · Jackson County (3) · Park County (2) · Mineral County (2) · Dolores County (2) · Hinsdale County (2) · Teller County (2) · Saguache County (1) · El Paso County (1) · Larimer County (1) · Fremont County (1) · Gilpin County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Lone Cone District | Silver, Gold, Copper, Lead | Argentite, Chalcocite, Chalcopyrite, Coal, Galena, Polybasite, Pyrargyrite, Pyrite, Sphalerite, Stibnite, Tennantite | Producer | 37.773, -108.095 |
| Smuggler Mine | Silver, Gold, Lead | Argentite, Chalcopyrite, Coal, Galena, Polybasite, Pyrargyrite, Pyrite, Sphalerite, Stibnite | Past Producer | 37.762, -108.100 |
| Geyser Mine | Lead, Silver | Argentite, Chalcopyrite, Galena, Gold, Hessite, Polybasite, Pyrargyrite, Sphalerite, Tetrahedrite | Past Producer | 38.139, -105.441 |
| Daisy-Hibernia Mine | Gold, Silver | Argentite, Galena, Gold, Polybasite, Pyrite, Sphalerite | Past Producer | 37.405, -108.016 |
| Cheyenne District | Fluorine-Fluorite, Lead, Gold, Silver, Zinc | Astrophyllite, Columbite, Cryolite, Fergusonite, Fluorite, Galena, Pyrochlore, Riebeckite, Sphalerite, Thorite, Topaz, Xenotime, Zircon | Producer | 38.748, -104.912 |
| Cresson Mine (new surface mine) | Gold | Calaverite, Pyrite, Gold | Producer | 38.727, -105.144 |
| Green Crystal, Beryl No. 1-9 | Quartz | Chalcedony | Occurrence | 40.619, -105.412 |
| Garo Deposit | Vanadium, Radium, Uranium | Chalcocite, Chrysocolla, Covellite, Malachite, Tyuyamunite, Uranophane | Past Producer | 39.096, -105.891 |
| Mammoth-Revenue Mine | Gold, Silver | Chalcocite, Covellite, Digenite, Electrum, Galena, Gold, Marcasite, Miargyrite, Molybdenite, Polybasite, Proustite, Pyrargyrite, Pyrrhotite, Silver, Sphalerite, Zinkenite | Producer | 37.347, -106.535 |
| Parole Mine | Gold, Silver | Chalcocite, Covellite, Digenite, Electrum, Galena, Gold, Marcasite, Miargyrite, Molybdenite, Polybasite, Proustite, Pyrargyrite, Pyrrhotite, Silver, Sphalerite, Zinkenite | Past Producer | 37.349, -106.537 |
| Valley Queen Mine | Silver, Gold | Chalcocite, Covellite, Digenite, Electrum, Galena, Gold, Marcasite, Miargyrite, Molybdenite, Polybasite, Proustite, Pyrargyrite, Pyrrhotite, Silver, Sphalerite, Zinkenite | Past Producer | 37.354, -106.538 |
| Vera Breccia Pipe | — | Chalcopyrite, Covellite, Gold, Pyrite | Occurrence | 37.344, -106.563 |
| Black Diamond Mine | Gold, Silver | Chalcopyrite, Galena | Past Producer | 37.436, -108.057 |
| Dee Stock | — | Chalcopyrite, Galena, Marcasite, Molybdenite, Pyrite, Sphalerite | Occurrence | 37.301, -106.495 |
| Hidden Treasure Mine | Silver, Lead, Copper, Gold | Chalcopyrite, Silver, Sphalerite | Past Producer | 38.026, -107.369 |
| Ute-Ulay Mine | Gold, Lead, Zinc, Silver | Chalcopyrite, Silver, Sphalerite | Past Producer | 38.020, -107.376 |
| Wagon Wheel Gap Fluorspar Mine | Fluorine-Fluorite | Fluorite | Past Producer | 37.746, -106.826 |
| Last Chance Mine | Fluorine-Fluorite | Fluorite | Past Producer | 38.652, -106.067 |
| Poncha Pass Claim | Tungsten | Fluorite, Scheelite | Occurrence | 38.439, -106.103 |
| Terrible Mine | Lead | Phosgenite, Cerussite | Past Producer | 38.219, -105.247 |
| Thornburg Mine | Uranium | Pitchblende, Uranophane, Zippeite | Past Producer | 38.369, -106.747 |
| Mountain Lily Mine | Silver, Gold | Pyrite, Sylvanite | Past Producer | 37.428, -108.044 |
| Unnamed Fluorspar Deposit | Fluorine-Fluorite | Pyrolusite | Occurrence | 38.612, -106.046 |
| Iron Mountain Mine | Silver, Iron | Sphalerite, Apatite, Brochantite, Goethite, Hematite, Jarosite, Magnetite, Molybdenite, Powellite, Pyrite, Siderite, Tennantite | Past Producer | 38.118, -105.373 |
| Willow Claims | Uranium | — | Occurrence | 38.759, -105.676 |
| True Blue 1, Oliver 1 Claims | — | — | Past Producer | 38.523, -105.891 |
| Ajax Mine | Gold | — | Plant | 38.716, -105.144 |
| Emperius Mine | Lead, Silver, Zinc | — | Past Producer | 37.871, -106.930 |
| Browns Canyon Fluorspar Area | Fluorine-Fluorite | — | Past Producer | 38.643, -106.077 |
| Baltimore-#7391 | — | — | Past Producer | 39.786, -105.506 |
| Fluorine Vein Properties | Fluorine-Fluorite | — | Past Producer | 40.939, -106.244 |
| Spar | Fluorine-Fluorite | — | Prospect | 40.705, -106.605 |
| Fluorspar Vein Properties | Fluorine-Fluorite | — | Past Producer | 40.934, -106.277 |
Back to Rockhounding in Colorado.
How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.
Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.
Updated