RockWoofCheck access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.
Found alongside
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
169 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
107 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
101 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
92 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
56 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
51 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Gunnison County (55) · Fremont County (22) · Chaffee County (11) · Jefferson County (10) · Park County (9) · Pitkin County (6) · Saguache County (6) · Custer County (5) · La Plata County (5) · Lake County (4) · Costilla County (4) · Larimer County (4) · Dolores County (4) · El Paso County (3) · Clear Creek County (3) · Moffat County (3) · San Juan County (2) · Montezuma County (2) · Hinsdale County (2) · San Miguel County (2) · Boulder County (2) · Gilpin County (1) · Rio Grande County (1) · Ouray County (1) · Summit County (1) · Huerfano County (1)
Sites (first 60)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Coors Pegmatite | Feldspar, Mica | Albite, Cleavelandite, Microcline | Past Producer | 39.700, -105.373 |
| Roscoe Gulch Pegmatites | Beryllium, Mica, Feldspar | Allanite, Beryl, Microcline, Monazite, Muscovite | Past Producer | 39.747, -105.373 |
| Guffey District, West | Tungsten, REE | Allanite, Euxenite, Ilmenite, Monazite | Occurrence | 38.750, -105.567 |
| Baumer Pegmatite Prospect | Uranium, Thorium, REE | Allanite, Euxenite, Ilmenite, Monazite | Occurrence | 38.708, -105.489 |
| Rico District | Zinc, Silver, Lead, Copper | Alunite | Past Producer | 37.693, -108.031 |
| Sedalia Mine | Zinc, Copper | Anglesite, Aurichalcite, Chalcanthite, Chalcocite, Chalcopyrite, Chrysocolla, Covellite, Cuprite, Gahnite, Galena, Gold, Hydrozincite, Malachite, Silver, Smithsonite, Sphalerite, Tenorite, Willemite | Past Producer | 38.590, -106.020 |
| Cotopaxi Mine | Copper, Zinc | Anglesite, Bornite, Chalcopyrite, Chrysocolla, Covellite, Cuprite, Gahnite, Galena, Goethite, Gold, Hematite, Limonite, Magnetite, Malachite, Molybdenite, Pyrite, Pyrrhotite, Scheelite, Silver, Sphalerite, Tetrahedrite | Past Producer | 38.380, -105.698 |
| Gem Mine | Nickel | Annabergite, Chalcocite, Niccolite, Silver, Bornite, Chalcopyrite | Past Producer | 38.276, -105.547 |
| Iron Hill Carbonatite Deposit | REE, Titanium, Niobium (Columbium) | Apatite, Ilmenite, Magnetite, Monazite, Rutile, Columbite, Pyrochlore, Perovskite, Sphene, Thorite, Vermiculite | Prospect | 38.253, -107.053 |
| Powderhorn Deposit | Titanium, Metal, Niobium (Columbium), REE, Thorium | Apatite, Magnetite, Perovskite | Occurrence | 38.250, -107.051 |
| Bear Claims Nos. 1 and 2 1977 | Lead, Barium-Barite | Barite, Galena, Gold, Malachite, Thorite | Past Producer | 38.322, -105.368 |
| Wisdom Ranch Prospect | Beryllium | Beryl, Chrysoberyl | Past Producer | 40.598, -105.365 |
| Crystal Mountain Pegmatite District | Mica, Beryllium, Uranium, Feldspar | Beryl, Chrysoberyl, Microcline, Muscovite, Tourmaline, Uraninite | Producer | 40.539, -105.433 |
| Bonus Extension Group | Beryllium | Beryl, Columbite, Microcline, Muscovite, Tantalite | Producer | 38.599, -106.001 |
| Buckman Ranch Pegmatite | Iron, Beryllium, Gemstone, Quartz, Garnet, Mica, Feldspar | Beryl, Feldspar, Garnet, Magnetite, Mica, Quartz, Tourmaline | Occurrence | 39.582, -105.242 |
| Chief #1-5 Mine | Quartz, Feldspar, Beryllium, Lithium | Beryl, Feldspar, Lepidolite | Producer | 38.483, -105.596 |
| Roscoe Beryl Prospect | Mica, Feldspar | Beryl, Gadolinite, Monazite, Muscovite, Xenotime | Past Producer | 39.737, -105.358 |
| Santa Fe Mountain Beryl Prospect | Beryllium | Beryl, Microcline | Past Producer | 39.710, -105.473 |
| Colfelco Pegmatite | Feldspar | Beryl, Microcline | Producer | 38.463, -105.356 |
| Colfelco No. 12 Pegmatite | Feldspar | Beryl, Microcline | Past Producer | 38.458, -105.355 |
| Meyers-Mcmullin Pegmatite | Feldspar | Beryl, Microcline, Muscovite | Past Producer | 38.474, -105.374 |
| Mcmullin Lease No. 2 | Feldspar | Beryl, Microcline, Muscovite | Occurrence | 38.478, -105.321 |
| Van Buskirk Pegmatite | Feldspar | Beryl, Microcline, Muscovite | Prospect | 38.481, -105.311 |
| Rim Pegmatite | Feldspar | Beryl, Microcline, Muscovite | Occurrence | 38.472, -105.337 |
| Ring Pegmatite | Feldspar | Beryl, Microcline, Muscovite | Occurrence | 38.472, -105.356 |
| Lorain Pegmatite | Feldspar | Beryl, Microcline, Muscovite | Past Producer | 38.460, -105.350 |
| Suzana Pegmatite | Feldspar | Beryl, Microcline, Muscovite | Occurrence | 38.483, -105.291 |
| Iowa Gulch | Quartz, Feldspar, Mica, Gemstone, Garnet, Iron | Biotite, Garnet, Magnetite, Microcline, Muscovite, Plagioclase, Quartz, Tourmaline | Occurrence | 39.589, -105.230 |
| Yard Mine | Feldspar | Bismutite, Euxenite, Fluorite, Gadolinite, Malachite, Microcline, Monazite | Past Producer | 38.888, -106.087 |
| Beartown District | Gold, Silver | Bornite, Calaverite, Chalcocite, Chalcopyrite, Galena, Marcasite, Petzite, Sphalerite, Sylvanite, Tetrahedrite | Past Producer | 37.723, -107.503 |
| Copper Hill Mine | Silver, Copper | Bornite, Chalcocite, Enargite, Galena, Hematite, Magnetite, Malachite, Marcasite, Pyrite, Sphalerite | Past Producer | 37.400, -108.073 |
| Billiken and Black Knight Lodes | Uranium, Copper | Bornite, Chalcopyrite, Cuprite, Pitchblende, Pyrite, Tenorite, Torbernite, Uranophane | Occurrence | 39.467, -105.219 |
| Copper King Mine | Gold, Copper | Bornite, Chalcopyrite, Gold, Muscovite, Scheelite | Past Producer | 38.737, -105.580 |
| Ace High-Jackpot Prospect | Copper, Iron | Brochantite, Chalcanthite, Chalcocite, Chalcopyrite, Chrysocolla, Hematite, Limonite, Magnetite, Malachite | Occurrence | 38.633, -106.005 |
| Buckhorn Mine | Gold, Silver | Cerargyrite, Gold, Wad | Past Producer | 37.945, -106.309 |
| Esperanza Mine | Silver, Gold | Cerargyrite, Gold, Wad | Past Producer | 37.946, -106.306 |
| Penn Group | Gold, Copper, Iron | Chalcocite, Gold, Hematite, Magnetite, Pyrite | Past Producer | 39.249, -106.246 |
| Blue Mountain Prospect | — | Chalcopyrite | Occurrence | 38.940, -105.351 |
| Bonnie Girl Mine | Gold, Silver | Chalcopyrite | Past Producer | 37.399, -108.040 |
| Copper King Mine | Zinc, Uranium | Chalcopyrite, Coffinite, Magnetite, Marcasite, Molybdenite, Pitchblende, Pyrite, Pyrrhotite, Sphalerite | Past Producer | 40.850, -105.496 |
| Domingo District | Gold, Silver | Chalcopyrite, Copper, Galena, Gold, Petzite, Rickardite, Sphalerite, Sulfur, Sylvanite, Thorite | Producer | 38.345, -107.002 |
| Calumet Mine | Iron | Chalcopyrite, Corundum, Hematite, Limonite, Magnesite, Magnetite, Malachite, Pyrite, Scheelite, Vermiculite | Past Producer | 38.637, -105.948 |
| Independence Mine | Copper | Chalcopyrite, Gahnite, Magnetite, Molybdenite, Pyrite | Past Producer | 38.642, -105.997 |
| Black Diamond Mine | Gold, Silver | Chalcopyrite, Galena | Past Producer | 37.436, -108.057 |
| Courthouse vein system | Gold, Silver | Chalcopyrite, Galena, Gold, Hessite, Jalpaite, Melonite, Pearceite, Polybasite, Pyrite, Scheelite, Sphalerite, Sylvanite, Tetrahedrite, Wolframite | Past Producer | 37.586, -105.484 |
| Hopemore Mine | Lead, Silver, Gold, Zinc | Chalcopyrite, Galena, Gold, Magnetite, Pyrite, Specularite, Sphalerite | Past Producer | 39.247, -106.238 |
| Keystone Mine | Silver | Chalcopyrite, Galena, Gold, Magnetite, Pyrite, Sphalerite | Past Producer | 38.164, -105.448 |
| Ophir | Zinc, Gold, Lead, Copper, Silver | Chalcopyrite, Galena, Hematite, Magnetite, Pyrite, Sphalerite | Past Producer | 37.833, -107.809 |
| Herman Passiflora Mine | Silver, Lead | Chalcopyrite, Galena, Magnetite, Pyrite | Past Producer | 38.160, -105.464 |
| Gunnison Mine | Gold, Copper, Silver | Chalcopyrite, Galena, Pyrite | Past Producer | 38.352, -107.103 |
| Eldorado Claim | Copper, Lead, Zinc | Chalcopyrite, Galena, Pyrite, Sphalerite | Occurrence | 37.739, -107.568 |
| Erie Mine | Zinc, Lead, Silver | Chalcopyrite, Galena, Pyrite, Sphalerite | Past Producer | 38.542, -106.380 |
| Ironcap Mine | Gold, Silver | Chalcopyrite, Galena, Pyrite, Sphalerite | Past Producer | 38.346, -107.087 |
| Old Lot Mine | Gold, Silver | Chalcopyrite, Galena, Pyrite, Sphalerite | Past Producer | 38.320, -107.095 |
| Willow Creek District | Gold, Silver, Copper | Chalcopyrite, Galena, Sphalerite | Past Producer | 38.321, -107.038 |
| Cebolla District | Gold, Silver, Copper | Chalcopyrite, Galena, Sphalerite | Occurrence | 38.188, -107.059 |
| Rico-Argentine Mine | Silver, Lead, Zinc | Chalcopyrite, Gold, Hydrozincite, Limonite, Pyrite, Smithsonite, Tennantite | Past Producer | 37.701, -108.008 |
| Copper King Mine | Copper | Chalcopyrite, Gold, Magnetite, Sphalerite | Past Producer | 38.640, -105.992 |
| Columbia District | Silver, Lead, Zinc, Iron | Chalcopyrite, Limonite, Magnetite, Molybdenite, Pyrite, Sphalerite | Producer | 39.059, -106.851 |
| Eagle Prospect | Iron | Chalcopyrite, Magnetite | Past Producer | 37.692, -108.060 |
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