RockWoofFound alongside
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
28 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
17 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
13 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
12 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
4 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
2 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Pennington County (19) · Lawrence County (9)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Dakota Calumet Group | Copper | Chalcopyrite | Producer | 43.952, -103.446 |
| Mastiff Group | Copper | Chalcopyrite | Occurrence | 43.941, -103.738 |
| Horseshoe - Comet Mine | Silver, Sulfur-Pyrite | Chalcopyrite, Galena, Gold, Pyrite, Silver, Sphalerite, Tetrahedrite | Past Producer | 44.328, -103.638 |
| Belle Eldridge Gold Mines | Gold, Silver, Lead, Zinc | Chalcopyrite, Galena, Gold, Silver | Past Producer | 44.370, -103.705 |
| Anaconda Mine | Gold | Chalcopyrite, Galena, Sphalerite | Past Producer | 44.274, -103.672 |
| Bee Mine | Copper | Chalcopyrite, Gold, Malachite, Silver | Past Producer | 44.104, -103.805 |
| Montezuma and the Whizzers Mine | Sulfur-Pyrite | Chalcopyrite, Gold, Pyrite | Past Producer | 44.371, -103.743 |
| Olaf Seim Mine | Sulfur-Pyrite | Chalcopyrite, Gold, Pyrite | Past Producer | 44.369, -103.744 |
| Slavonian Mine | Sulfur-Pyrite | Chalcopyrite, Pyrite | Past Producer | 44.354, -103.745 |
| Jungle Mine | Copper | Chalcopyrite, Pyrite, Pyrrhotite | Past Producer | 44.213, -103.694 |
| Maloney Blue Lead Mine | Copper | Chrysocolla, Copper, Cuprite, Gold, Malachite, Silver, Tenorite | Past Producer | 43.967, -103.453 |
| Dexter Claim | Copper, Gold, Silver, Lead | Copper, Galena, Gold, Silver | Occurrence | 44.065, -103.471 |
| Gopher Lode | Copper, Gold | Copper, Gold, Silver | Occurrence | 44.043, -103.889 |
| Juniper Silver Mine | Zinc, Gold, Copper | Gold, Quartz | Producer | 43.883, -103.267 |
| Copper Glance | Copper, Gold, Uranium | Malachite, Pyrite | Past Producer | 44.077, -103.479 |
| Jenny Gulch Mine | Gold, Silver, Copper | Pyrite | Occurrence | 44.096, -103.553 |
| Gilt Edge Mine | Gold, Silver | — | Past Producer | 45.332, -103.675 |
| Copper Cliff Company Mine | Copper | — | Prospect | 44.117, -103.834 |
| Custer Peak Copper Co Mine | Copper | — | Past Producer | 44.213, -103.695 |
| Calumet Mine MS 1497 | Copper | — | Past Producer | 43.952, -103.446 |
| Blue Lead Mine MS 1483 | Copper | — | Past Producer | 43.957, -103.459 |
| Mastiff Group MS 2032 | Copper | — | Occurrence | 43.937, -103.741 |
| Ashley and Nyswanger | Gold | — | Prospect | 44.061, -103.463 |
| Gopher Lode | Copper | — | Prospect | 44.073, -103.827 |
| Black Hills Copper Company Mine | Gold | — | Past Producer | 44.104, -103.805 |
| Dakota Calumet Mine MS 1497 | Copper | — | Past Producer | 43.952, -103.446 |
| Jenny Gulch Mine | Gold | — | Past Producer | 44.096, -103.569 |
| Continental Copper Company Mine | Copper | — | Past Producer | 43.955, -103.455 |
Back to Rockhounding in South Dakota.
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