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
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
368 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
223 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
172 sites
Beryl
Mohs 7.5–8. Six-sided crystals; aquamarine and emerald are beryl. Mindat
132 sites
Garnet
Mohs 6.5–7.5. Usually deep red, round many-faced crystals. Mindat
71 sites
Fluorite
Mohs 4. Cubes in purple, green or yellow; many glow under UV. Mindat
66 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Fremont County (72) · Park County (51) · Jefferson County (47) · Larimer County (43) · Gunnison County (40) · Chaffee County (31) · Clear Creek County (18) · Boulder County (13) · Douglas County (13) · Mesa County (7) · Montrose County (6) · El Paso County (4) · Grand County (4) · Teller County (3) · Moffat County (3) · Routt County (2) · Saguache County (2) · Gilpin County (2) · Dolores County (2) · Eagle County (1) · Lake County (1) · Summit County (1) · Pitkin County (1) · Huerfano County (1)
Sites (first 60)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Meyers Mine | Feldspar, Mica | Albite, Amblygonite, Beryl, Bismutite, Lepidolite, Microcline, Muscovite | Producer | 38.481, -105.292 |
| Homestake Mine | Feldspar | Albite, Apatite, Beryl, Muscovite | Past Producer | 38.627, -105.957 |
| Silver Rocker Group | Feldspar, Mica | Albite, Beryl, Columbite, Garnet, Muscovite, Orthoclase, Tantalite | Producer | 38.626, -105.956 |
| Shirley Group | Beryllium, Niobium (Columbium), Tantalum, REE | Albite, Beryl, Microcline, Muscovite | Occurrence | 38.608, -105.994 |
| Rock King Prospect | Feldspar, Mica | Albite, Beryl, Microcline, Muscovite | Past Producer | 38.632, -105.959 |
| Coors Pegmatite | Feldspar, Mica | Albite, Cleavelandite, Microcline | Past Producer | 39.700, -105.373 |
| Clora May Mine | Feldspar | Allanite, Beryl, Bismutite, Euxenite, Xenotime | Past Producer | 38.860, -105.995 |
| Burroughs Feldspar Mine | Feldspar, Beryllium, Mica | Allanite, Beryl, Columbite, Euxenite, Gadolinite, Microcline, Monazite, Muscovite, Pyrochlore, Tantalite, Xenotime | Past Producer | 39.681, -105.323 |
| Roscoe Gulch Pegmatites | Beryllium, Mica, Feldspar | Allanite, Beryl, Microcline, Monazite, Muscovite | Past Producer | 39.747, -105.373 |
| Luella Pegmatite | Feldspar | Allanite, Bismutite, Euxenite, Fluorite, Microcline | Past Producer | 38.849, -106.052 |
| Baumer Pegmatite Prospect | Uranium, Thorium, REE | Allanite, Euxenite, Ilmenite, Monazite | Occurrence | 38.708, -105.489 |
| Crystal No. 8 Mine | Feldspar | Allanite, Euxenite, Microcline | Past Producer | 38.829, -106.024 |
| Baumer Pegmatite | Mica, Niobium (Columbium), Tantalum, REE, Thorium | Allanite, Euxenite, Monazite | Occurrence | 38.750, -105.501 |
| Calico Peak Alunite Deposit | Aluminum | Alunite | Occurrence | 37.710, -108.090 |
| Crystal Park Area | Beryllium, Gemstone | Amazonstone, Zircon | Producer | 38.832, -104.932 |
| 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 |
| Brown Derby #4,5, White Spar #1,2 | Mica, Beryllium, Gemstone, Garnet, Tantalum | Apatite, Beryl, Garnet, Lepidolite, Microlite, Topaz | Producer | 38.551, -106.630 |
| Thomas-Union Lodes | Quartz, Feldspar, Mica, Garnet, Gemstone | Apatite, Garnet, Muscovite, Quartz | Producer | 39.541, -105.195 |
| 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 |
| Boomer Mine | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Silver, Sphalerite, Uraninite, Wolframite | Past Producer | 39.076, -105.449 |
| Redskin Mine | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Producer | 39.099, -105.418 |
| Mary Lee Mine | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Past Producer | 39.076, -105.429 |
| Little John Mine | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Occurrence | 39.072, -105.422 |
| Black Prince Mine | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Past Producer | 39.103, -105.416 |
| Badger Flats Area | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Past Producer | 39.076, -105.449 |
| Blue Jay Mine | Beryllium, Molybdenum, Tungsten, Uranium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Occurrence | 39.075, -105.449 |
| Happy Thought Mine | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Occurrence | 39.078, -105.435 |
| J & S Group | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Past Producer | 39.079, -105.452 |
| China Wall Area | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Past Producer | 39.121, -105.438 |
| Tennessee Mine | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Occurrence | 39.078, -105.434 |
| A & C Prospect | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Past Producer | 39.122, -105.458 |
| Hazel Marie Group | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Occurrence | 39.116, -105.450 |
| Champell Mine | Beryllium | Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite | Occurrence | 39.075, -105.450 |
| Silver Glen Ranch Pegmatite | Mica, Feldspar | Bertrandite, Beryl, Cleavelandite, Columbite, Microcline, Microlite, Monazite, Thorite | Past Producer | 39.667, -105.303 |
| Grover Mine | Feldspar, Mica | Bertrandite, Beryl, Columbite, Microcline, Monazite, Muscovite | Past Producer | 39.707, -105.440 |
| Mt. Olympus Mine | Beryllium, Mica | Beryl | Past Producer | 40.691, -105.257 |
| Phantom Canyon Prospect | Niobium (Columbium), Tantalum, Beryllium, Mica | Beryl | Producer | 38.600, -105.117 |
| Black Canyon Beryl Prospect | Beryllium | Beryl | Occurrence | 38.446, -107.466 |
| Blue Brute | Beryllium | Beryl | Producer | 38.621, -105.966 |
| Santa Fe Mt., Sawmill Gulch | Beryllium, Garnet, Feldspar, Mica | Beryl, Biotite, Feldspar, Garnet | Producer | 39.719, -105.474 |
| Bigger Mica Mine | Feldspar, Mica, Beryllium | Beryl, Bismuthinite, Bismutite, Cassiterite, Columbite, Microcline, Monazite, Muscovite | Past Producer | 39.565, -105.215 |
| School Section Mine | Mica, Beryllium, Feldspar | Beryl, Bismutite, Chalcocite, Chrysocolla, Columbite, Covellite, Malachite, Microcline, Muscovite, Silver, Thorite | Producer | 38.472, -105.344 |
| Mica Lode Mine | Quartz, Mica, Feldspar, Beryllium | Beryl, Bismutite, Chalcocite, Lepidolite, Malachite, Microcline, Muscovite | Past Producer | 38.479, -105.302 |
| Meyers Ranch | Feldspar, Mica, Beryllium, Niobium (Columbium) | Beryl, Bismutite, Columbite, Microcline, Monazite | Past Producer | 38.793, -105.596 |
| Border Feldspar Prospect | Feldspar, Quartz, Mica | Beryl, Bismutite, Feldspar, Microcline, Muscovite, Quartz | Past Producer | 38.463, -105.321 |
| Mayesville District | Uranium | Beryl, Chalcopyrite, Galena, Gold, Muscovite, Pyrite, Uranophane | Past Producer | 40.694, -105.630 |
| Crystal Mountain Pegmatite District | Mica, Beryllium, Uranium, Feldspar | Beryl, Chrysoberyl, Microcline, Muscovite, Tourmaline, Uraninite | Producer | 40.539, -105.433 |
| Wasson Pegmatite | Beryllium, Feldspar, Mica | Beryl, Columbite, Euxenite, Microcline, Muscovite, Tantalite | Past Producer | 39.703, -105.315 |
| Columbine | Feldspar, Mica, Beryllium, Niobium (Columbium), Copper | Beryl, Columbite, Feldspar, Malachite, Mica | Producer | 40.118, -105.326 |
| Grover | Beryllium, Niobium (Columbium), REE, Tantalum, Mica, Feldspar | Beryl, Columbite, Feldspar, Mica, Monazite, Tantalite | Producer | 39.714, -105.452 |
| Bonus Extension Group | Beryllium | Beryl, Columbite, Microcline, Muscovite, Tantalite | Producer | 38.599, -106.001 |
| Tall Timber Group | Mica, Beryllium, Feldspar | Beryl, Columbite, Muscovite, Tantalite | Past Producer | 39.646, -105.273 |
| Bonus Extension | Beryllium, Niobium (Columbium), Tantalum, Mica | Beryl, Columbite, Muscovite, Tantalite | Occurrence | 38.597, -106.453 |
| Mona No 9 Claim | Beryllium, Mica, Tantalum | Beryl, Columbite, Tantalite | Producer | 40.167, -105.434 |
| Christie Ward-Lucky Thirteen 1&2 | Feldspar, REE, Beryllium, Niobium (Columbium), Quartz, Mica | Beryl, Columbite, Thorite | Producer | 38.992, -105.393 |
| Beaver | Copper, Beryllium, Mica | Beryl, Copper, Mica | Producer | 39.916, -105.803 |
| Coffey Pot Claims | Feldspar | Beryl, Feldspar | Occurrence | 38.629, -105.983 |
| Phantom Lode | Feldspar, Mica | Beryl, Feldspar, Fluorite, Mica | Past Producer | 38.569, -105.117 |
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