RockWoofSketch map
Woof’s favorite find
Anchor
We picked it because its USGS record mentions 4 gem or collectible minerals (Quartz, Gold, Fluorite, Silver) and 6 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as occurrence for Molybdenum, Gold, Silver, Copper, Lead, Zinc. Minerals mentioned: Quartz, Gold, Pyrite, Fluorite, Copper, Silver. Approx. location 39.780, -105.505. USGS record.
Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.
Field cards: what kind of sites?
Produced ore or material at some point in the past.
The mineral was noted here, without development.
Was producing when the record was made.
Status not recorded.
Explored or test-dug, with no recorded production.
Status terms come from USGS MRDS records.
Mineral cards
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
345 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
314 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
232 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
112 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
61 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
32 sites
Fluorite
Mohs 4. Cubes in purple, green or yellow; many glow under UV. Mindat
3 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
2 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
Pyrite 77Gold 56Chalcopyrite 53Sphalerite 49Galena 46Silver 38Tennantite 14Pitchblende 13Copper 7Molybdenite 5Monazite 4Xenotime 4Commodities
Gold 318Copper 49Lead 47Silver 46Zinc 28Uranium 14Tungsten 13Molybdenum 7REE 5Iron 3Sites (first 40)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Pittsburgh-Notaway Group | Silver, Copper, Gold | Chalcocite, Chalcopyrite, Galena, Sphalerite, Sylvanite, Tennantite, Enargite, Gold | Past Producer | 39.787, -105.502 |
| Two Sisters | Gold, Silver, Lead, Uranium | Chalcopyrite, Galena, Pitchblende | Occurrence | 39.809, -105.524 |
| Treasure Key Tunnel Williams Vein | Silver, Lead, Zinc | Chalcopyrite, Galena, Sphalerite | Occurrence | 39.795, -105.479 |
| Prize Mine | Lead, Zinc, Copper | Chalcopyrite, Galena, Sphalerite | Producer | 39.793, -105.523 |
| Ingram | Copper, Gold, Silver, Lead | Chalcopyrite, Gold, Lead, Silver | Producer | 39.849, -105.579 |
| Caledonia Lode | Gold | Chalcopyrite, Pyrite | Past Producer | 39.861, -105.528 |
| Fish | Gold | Chalcopyrite, Pyrite | Past Producer | 39.862, -105.589 |
| Ingram | Gold | Chalcopyrite, Pyrite | Past Producer | 39.849, -105.579 |
| Mackey | Gold | Chalcopyrite, Pyrite, Covellite | Past Producer | 39.864, -105.588 |
| Sixteen-To-One | Gold | Chalcopyrite, Pyrite, Galena | Past Producer | 39.822, -105.507 |
| Pettibone | Gold | Chalcopyrite, Pyrite, Galena, Sphalerite, Copper | Past Producer | 39.851, -105.554 |
| Schultz Wonder | Gold | Chalcopyrite, Pyrite, Sphalerite | Past Producer | 39.844, -105.576 |
| Alps-Olympia | Gold | Chalcopyrite, Sphalerite, Copper | Past Producer | 39.788, -105.534 |
| Justice | Gold | Chalcopyrite, Tennantite | Past Producer | 39.784, -105.490 |
| Lotus | Gold | Chalcopyrite, Tetrahedrite, Galena, Sphalerite | Past Producer | 39.781, -105.528 |
| Dory Hill | Iron, Niobium (Columbium), Mica, Quartz, Feldspar | Columbite, Feldspar, Magnetite, Mica, Quartz | Occurrence | 39.846, -105.491 |
| Mackey, Annie, Fish | Gold, Copper | Copper, Gold | Producer | 39.864, -105.588 |
| Penobscot Tunnel | Gold, Silver, Lead, Copper | Copper, Gold, Lead, Silver | Producer | 39.893, -105.525 |
| Melrose Tunnel | Gold, Silver, Copper | Copper, Gold, Silver | Occurrence | 39.898, -105.564 |
| Evergreen, Gold Standard, Nancy Lee | Copper, Gold, Silver | Copper, Gold, Silver | Producer | 39.858, -105.572 |
| Champion, Lone Star | Gold, Silver, Copper | Copper, Gold, Silver | Occurrence | 39.930, -105.537 |
| Glendale | Tungsten | Ferberite | Producer | 39.922, -105.474 |
| Eureka | Tungsten | Ferberite | Producer | 40.002, -105.413 |
| Wilma Claims | Molybdenum | Ferrimolybdite, Molybdenite | Occurrence | 39.867, -105.551 |
| Hill, Bunkhous | Gold, Silver, Fluorine-Fluorite | Fluorite, Gold, Silver | Occurrence | 39.777, -105.493 |
| Spur Daisy | Lead, Gold, Uranium, Silver, Zinc | Galena, Pitchblende, Pyrite | Producer | 39.809, -105.531 |
| Pewabic | Uranium, Silver, Gold, Copper | Galena, Pitchblende, Pyrite, Sphalerite | Occurrence | 39.777, -105.531 |
| German and Belcher | Gold, Copper, Silver, Uranium | Galena, Pitchblende, Pyrite, Sphalerite | Producer | 39.789, -105.534 |
| Calhoun-Wood | Uranium, Zinc, Gold, Lead | Galena, Pitchblende, Sphalerite | Producer | 39.767, -105.467 |
| Velvet Valley | Gold, Lead, Copper | Galena, Pyrite | Occurrence | 39.866, -105.550 |
| Beecher | Gold | Galena, Pyrite, Chalcopyrite | Past Producer | 39.719, -105.706 |
| King Mine | Gold | Galena, Pyrite, Sphalerite | Past Producer | 39.796, -105.538 |
| Gilpin Eureka Essex Group | Zinc, Lead | Galena, Quartz, Sphalerite | Producer | 39.801, -105.529 |
| Barita-Hill Mine | Zinc, Silver, Lead | Galena, Silver | Producer | 39.774, -105.490 |
| Seaton | Gold | Galena, Sphalerite | Past Producer | 39.759, -105.518 |
| Freiburg Mine | Gold | Galena, Sphalerite | Past Producer | 39.805, -105.522 |
| Widow Woman Vein | Gold | Galena, Sphalerite, Pyrite | Past Producer | 39.776, -105.497 |
| Black Hills | Gold | Galena, Sphalerite, Pyrite | Past Producer | 39.911, -105.573 |
| Meeker | Gold | Galena, Sphalerite, Tennantite, Chalcopyrite | Past Producer | 39.787, -105.501 |
| Julia Lode | Gold, Silver, Lead | Galena, Tetrahedrite | Occurrence | 39.867, -105.534 |
Nearby counties
Clear Creek County · Jefferson County · Boulder County · Denver County · Grand County
Colorado mineral guides
- Beryl in Colorado
- Tourmaline in Colorado
- Quartz in Colorado
- Garnet in Colorado
- Gold in Colorado
- Mica in Colorado
Back to all Colorado counties.
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