RockWoofFound alongside
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
20 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
10 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
6 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
5 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
4 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
3 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Lancaster County (8) · Chester County (6) · Lebanon County (3) · Montgomery County (2) · Bucks County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Lancaster County | Iridium, Lead, Copper, Platinum, Gold, Silver | Chalcopyrite, Galena, Ilmenite | Occurrence | 39.979, -76.185 |
| Cornwall Mine | Iron | Magnetite | Past Producer | 40.269, -76.403 |
| Cornwall Mine | Iron, Cobalt | Magnetite, Pyrite, Chalcopyrite | Past Producer | 40.269, -76.403 |
| Bamford | Zinc, Lead | — | Past Producer | 40.094, -76.377 |
| Montgomery County Mine | Lead | — | Past Producer | 40.106, -75.530 |
| Wheatley Mine &3 Additional Pb-Zn Mines and the Morris Cu Mine | Lead, Zinc | — | Past Producer | 40.107, -75.508 |
| New Galena Mine | — | — | Past Producer | 40.342, -75.177 |
| Pequea Mine B | Silver, Lead | — | Past Producer | 39.944, -76.317 |
| Ecton Mine | — | — | Past Producer | 40.129, -75.454 |
| Wheatley Mine | — | — | Past Producer | 40.106, -75.517 |
| Pequea Mine | — | — | Past Producer | 39.943, -76.311 |
| Silver Ford Mine | Lead | — | Past Producer | 39.946, -76.314 |
| Pequea Silver Mine A | Lead, Silver | — | Past Producer | 39.941, -76.308 |
| Bamford Mine | — | — | Past Producer | 40.075, -76.375 |
| Phoenix Mine | — | — | Past Producer | 40.101, -75.520 |
| Unnamed Vertical Shaft | Silver | — | Past Producer | 39.942, -76.315 |
| Matthey Bishop--Malvern, Pa. | Iridium, Osmium, Palladium, Platinum, Rhodium, Ruthenium | — | Producer | 40.038, -75.511 |
| Brookdale Mine | — | — | Past Producer | 40.103, -75.520 |
| Cornwall Mine and Pellet Plant | — | — | Past Producer | 40.269, -76.403 |
| Wetherwill Mine | — | — | Past Producer | 40.129, -75.440 |
Back to Rockhounding in Pennsylvania.
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