RockWoofFound alongside
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
39 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
34 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
23 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
18 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
11 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
4 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Lawrence County (29) · Pennington County (7) · Custer County (3)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Etta Spodumene Mine | Feldspar, Mica, Lithium, Tin | Albite, Beryl, Cassiterite, Muscovite, Plagioclase, Spodumene, Wolframite | Past Producer | 43.881, -103.419 |
| Tiger Lode | Lithium | Amblygonite, Spodumene | Past Producer | 43.893, -103.342 |
| Spokane Mine | Gold, Silver | Argentite, Chalcopyrite, Galena | Past Producer | 43.840, -103.377 |
| Queen Claim | Beryllium, Feldspar | Beryl, Microcline | Past Producer | 43.869, -103.382 |
| 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 |
| Hayes Group Claims | Lead, Silver | Chalcopyrite, Galena, Tetrahedrite | Producer | 44.321, -103.644 |
| Dexter Claim | Copper, Gold, Silver, Lead | Copper, Galena, Gold, Silver | Occurrence | 44.065, -103.471 |
| Adelphi Mine | Gold, Silver | Galena | Past Producer | 44.400, -103.866 |
| Oro Fino Mine | Gold | Galena, Gold, Pyrite, Sphalerite | Past Producer | 44.343, -103.673 |
| Decorah Mine | Gold, Silver | Galena, Gold, Silver | Past Producer | 44.344, -103.832 |
| Merritt No. 1 Mine | Gold | Galena, Gold, Silver | Past Producer | 44.331, -103.639 |
| Bullion Mine | Silver | Galena, Lead, Silver | Past Producer | 44.327, -103.642 |
| Cora Mine | Lead, Silver | Galena, Lead, Silver | Past Producer | 44.326, -103.645 |
| Groshong Mine | Silver | Galena, Lead, Silver | Past Producer | 44.321, -103.644 |
| Coletta Mine | Silver, Lead | Galena, Lead, Silver | Past Producer | 44.313, -103.651 |
| Custer Mine | Silver, Lead | Galena, Lead, Silver | Past Producer | 44.334, -103.639 |
| Alexander Mine | Silver | Galena, Lead, Silver | Past Producer | 44.324, -103.644 |
| Alice Mine | Silver | Galena, Lead, Silver | Past Producer | 44.317, -103.640 |
| Duggan's Shaft | Lead, Silver | Galena, Pyrite | Occurrence | 44.079, -103.573 |
| Duggan's Whim | Lead, Silver | Galena, Pyrite | Occurrence | 44.085, -103.574 |
| El Refugio Mine | Silver | Galena, Silver | Past Producer | 44.337, -103.634 |
| Florence Mine | Silver | Galena, Silver | Past Producer | 44.336, -103.632 |
| Red Cloud Mine | Silver | Galena, Silver | Past Producer | 44.339, -103.634 |
| Gold Hill Group | Gold, Silver | Gold, Silver | Past Producer | 43.986, -103.608 |
| Grand Junction and Hartford Group | Gold, Silver | Gold, Silver | Past Producer | 43.849, -103.673 |
| Spokane Mine | — | — | Past Producer | 43.840, -103.377 |
| Horseshoe-Comet Mine | — | — | Past Producer | 44.327, -103.641 |
| Adelphia | — | — | Past Producer | 44.397, -103.864 |
| Double Rainbow | — | — | Past Producer | 44.200, -103.372 |
| Spanish R | — | — | Past Producer | 44.397, -103.868 |
| Belle Eldridge Gold Mine Inc. | — | — | Past Producer | 44.370, -103.708 |
| Titanic | — | — | Past Producer | 44.397, -103.863 |
| Merritt No. 1 and Merritt No. 2 | — | — | Past Producer | 44.332, -103.638 |
| Segregated Iron Hill | — | — | Past Producer | 44.397, -103.859 |
| Cora | — | — | Past Producer | 44.328, -103.641 |
| Seabury-Calkins | — | — | Past Producer | 44.398, -103.860 |
| Iron Hill | — | — | Past Producer | 44.398, -103.860 |
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