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
Garnet
Mohs 6.5–7.5. Usually deep red, round many-faced crystals. Mindat
153 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
90 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
71 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
59 sites
Beryl
Mohs 7.5–8. Six-sided crystals; aquamarine and emerald are beryl. Mindat
45 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
45 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Park County (37) · Fremont County (29) · Jefferson County (18) · Chaffee County (14) · Larimer County (11) · Clear Creek County (9) · Gunnison County (8) · La Plata County (4) · Costilla County (3) · Saguache County (3) · Moffat County (3) · Custer County (2) · Dolores County (2) · Montezuma County (2) · Montrose County (2) · Douglas County (2) · Lake County (1) · Boulder County (1) · Gilpin County (1) · Summit 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 |
| Silver Rocker Group | Feldspar, Mica | Albite, Beryl, Columbite, Garnet, Muscovite, Orthoclase, Tantalite | Producer | 38.626, -105.956 |
| Rock King Prospect | Feldspar, Mica | Albite, Beryl, Microcline, Muscovite | Past Producer | 38.632, -105.959 |
| Shirley Group | Beryllium, Niobium (Columbium), Tantalum, REE | Albite, Beryl, Microcline, Muscovite | Occurrence | 38.608, -105.994 |
| 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 |
| 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 |
| Crystal No. 8 Mine | Feldspar | Allanite, Euxenite, Microcline | Past Producer | 38.829, -106.024 |
| Rico District | Zinc, Silver, Lead, Copper | Alunite | Past Producer | 37.693, -108.031 |
| 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 |
| Geyser Mine | Lead, Silver | Argentite, Chalcopyrite, Galena, Gold, Hessite, Polybasite, Pyrargyrite, Sphalerite, Tetrahedrite | Past Producer | 38.139, -105.441 |
| Yorkville Area Prospects | Copper, Silver | Barite, Malachite, Silver | Prospect | 38.279, -105.280 |
| Silver Glen Ranch Pegmatite | Mica, Feldspar | Bertrandite, Beryl, Cleavelandite, Columbite, Microcline, Microlite, Monazite, Thorite | Past Producer | 39.667, -105.303 |
| Huckleberry Mine | Beryllium | Beryl | Occurrence | 40.551, -105.488 |
| Black Canyon Beryl Prospect | Beryllium | Beryl | Occurrence | 38.446, -107.466 |
| Hide Above Lode | Beryllium, Lithium | Beryl | Past Producer | 40.469, -105.384 |
| Santa Fe Mt., Sawmill Gulch | Beryllium, Garnet, Feldspar, Mica | Beryl, Biotite, Feldspar, Garnet | Producer | 39.719, -105.474 |
| 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 |
| Wisdom Ranch Prospect | Beryllium | Beryl, Chrysoberyl | Past Producer | 40.598, -105.365 |
| Wasson Pegmatite | Beryllium, Feldspar, Mica | Beryl, Columbite, Euxenite, Microcline, Muscovite, Tantalite | Past Producer | 39.703, -105.315 |
| Grover | Uranium, REE, Zinc, Tantalum, Niobium (Columbium), Beryllium, Garnet | Beryl, Columbite, Gahnite, Garnet, Monazite, Tantalite | Occurrence | 39.714, -105.452 |
| Tall Timber Group | Mica, Beryllium, Feldspar | Beryl, Columbite, Muscovite, Tantalite | Past Producer | 39.646, -105.273 |
| Phantom Lode | Feldspar, Mica | Beryl, Feldspar, Fluorite, Mica | Past Producer | 38.569, -105.117 |
| Snyder, Saddleback Mtn. | Quartz, Garnet, Beryllium, Mica, REE, Iron, Feldspar | Beryl, Feldspar, Gahnite, Garnet, Hematite, Mica, Quartz, Xenotime | Producer | 39.719, -105.436 |
| 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 |
| Combination Prospect | Mica, Feldspar | Beryl, Feldspar, Muscovite | Occurrence | 38.633, -105.983 |
| Blue-Green Lodes | REE, Garnet, Feldspar, Quartz, Mica, Beryllium | Beryl, Garnet | Producer | 39.064, -105.523 |
| Monzonite, New Anniversary Bucky | Tantalum, Niobium (Columbium), Beryllium, REE, Gemstone, Mica, Garnet | Beryl, Garnet, Mica, Monazite, Tantalite, Topaz | Producer | 38.578, -106.667 |
| Jacobsen Ranch | Garnet, Gemstone, Beryllium | Beryl, Garnet, Topaz | Occurrence | 39.719, -105.399 |
| Colfelco Pegmatite | Feldspar | Beryl, Microcline | Producer | 38.463, -105.356 |
| Santa Fe Mountain Beryl Prospect | Beryllium | Beryl, Microcline | Past Producer | 39.710, -105.473 |
| Little Abner Pegmatite | Beryllium, REE, Feldspar | Beryl, Microcline | Past Producer | 39.766, -105.349 |
| Consolidated Feldspar Corporation Mine | Feldspar, Mica | Beryl, Microcline, Muscovite | Past Producer | 38.489, -105.339 |
| Lorain Pegmatite | Feldspar | Beryl, Microcline, Muscovite | Past Producer | 38.460, -105.350 |
| Van Buskirk Pegmatite | Feldspar | Beryl, Microcline, Muscovite | Prospect | 38.481, -105.311 |
| Star Girl Mine | Feldspar, Mica | Beryl, Microcline, Muscovite | Past Producer | 38.700, -105.481 |
| Beryllium Lode Prospect | Mica, Feldspar, Beryllium | Beryl, Microcline, Muscovite | Occurrence | 38.724, -105.498 |
| Rose Dawn Mine | Feldspar, Mica | Beryl, Microcline, Muscovite | Past Producer | 38.696, -105.483 |
| Big Boulder Prospect | Mica | Beryl, Microcline, Muscovite | Past Producer | 40.521, -105.408 |
| Spikebuck Mine | Feldspar | Beryl, Microcline, Muscovite, Quartz | Past Producer | 38.453, -105.471 |
| R. H. Magnuson Mine | Feldspar, Quartz | Beryl, Microcline, Quartz | Prospect | 38.471, -105.301 |
| Pan Claims | Beryllium | Beryl, Muscovite | Past Producer | 40.572, -105.430 |
| Hyatt Ranch Mine | Feldspar, Beryllium, Mica | Beryl, Muscovite | Producer | 40.460, -105.353 |
| Beryl No. 5 Prospect | Beryllium, Mica | Beryl, Muscovite | Occurrence | 40.544, -105.412 |
| Crystal Silica Mine | Mica | Beryl, Muscovite | Past Producer | 40.535, -105.436 |
| Buckhorn Mica Mine | Mica, Beryllium | Beryl, Muscovite, Spodumene | Producer | 40.537, -105.377 |
| Iowa Gulch | Quartz, Feldspar, Mica, Gemstone, Garnet, Iron | Biotite, Garnet, Magnetite, Microcline, Muscovite, Plagioclase, Quartz, Tourmaline | Occurrence | 39.589, -105.230 |
| Seven Hills-Yetter Ranch Pegmatite | Feldspar, Mica, Quartz, Garnet, Gemstone | Biotite, Garnet, Microcline, Muscovite, Quartz, Tourmaline | Occurrence | 39.661, -105.324 |
| Hiwan Ranch | Feldspar, Mica, Quartz, Garnet, Gemstone | Biotite, Garnet, Microcline, Plagioclase, Quartz, Tourmaline | Producer | 39.719, -105.380 |
| Knob Hill | Feldspar, Mica, Garnet | Biotite, Garnet, Muscovite, Quartz | Prospect | 38.449, -105.778 |
| Goat Hill #1 | Mica | Biotite, Garnet, Muscovite, Tourmaline | Occurrence | 38.540, -107.548 |
| Muscovite #1, 2 | Mica | Biotite, Garnet, Muscovite, Tourmaline | Occurrence | 38.540, -107.548 |
| Rosemont Mine | Mica, Feldspar | Bismutite, Microcline, Muscovite | Past Producer | 38.694, -105.478 |
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