RockWoofFound alongside
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
42 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
7 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
4 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
3 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. 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.
By county
Berks County (16) · Chester County (7) · York County (6) · Lebanon County (4) · Lehigh County (3) · Lancaster County (3) · Northampton County (1) · Bucks County (1) · Adams County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Dotterer's Mine & 2 Additional | Iron | Magnetite | Past Producer | 40.385, -75.708 |
| Trexler's Mine/Beitler's Mine | Iron | Magnetite | Past Producer | 40.446, -75.665 |
| Miller's Mine | Iron | Magnetite | Past Producer | 40.478, -75.616 |
| Schell Ore Mine & 4 Additional Mines | Iron | Magnetite | Past Producer | 40.481, -75.529 |
| Jacob's Mine & 2 Additional Mines & 3 Residual Fe Deposits | Iron | Magnetite | Past Producer | 40.499, -75.580 |
| Unnamed--Fountain Hill | Iron | Magnetite | Past Producer | 40.600, -75.361 |
| Mine Hill | Iron | Magnetite | Past Producer | 40.574, -75.206 |
| Old Kauffman Bank | Iron | Magnetite | Past Producer | 39.944, -76.783 |
| Lichte Mine | Iron | Magnetite | Past Producer | 39.996, -76.986 |
| Adams Minter Mine/Peter Comfort Mine | Iron | Magnetite | Past Producer | 39.889, -77.334 |
| Grantham Mines & 3 Additional | Iron | Magnetite | Past Producer | 40.150, -77.001 |
| Warwick Mine/Leighton/Steels/Hopewell Mines | Iron | Magnetite | Past Producer | 40.165, -75.781 |
| Stauffer Mine/Mosteller Mine | Iron | Magnetite | Past Producer | 40.163, -75.658 |
| Bieber's Mine/Brumbach's Mine | Iron | Magnetite | Past Producer | 40.440, -75.763 |
| Gilberg Mine | Iron | Magnetite | Past Producer | 40.407, -75.627 |
| Fink Mine | Iron | Magnetite | Past Producer | 40.517, -75.484 |
| Heydt Mine/Miller & Yoder Mine | Iron | Magnetite | Past Producer | 40.428, -75.718 |
| Bender and Vicinity | Iron | Magnetite | Past Producer | 40.102, -77.044 |
| Grace Iron-Colbalt Minemorgantown/Jones & Kinney Mine/Bylers Mine | Iron | Magnetite | Past Producer | 40.171, -75.879 |
| Knabb's Mine | Iron | Magnetite | Past Producer | 40.356, -75.863 |
| Wheatfield Mine | Iron | Magnetite | Past Producer | 40.299, -76.036 |
| Carper Mine | Iron | Magnetite | Past Producer | 40.275, -76.518 |
| Gilbert Shaft | Iron | Magnetite | Past Producer | 40.361, -75.627 |
| Boyertown Mines--Warwick/Gabel/Phoenix/Brower Mines | Iron | Magnetite | Past Producer | 40.336, -75.651 |
| Esterly Mine | Iron | Magnetite | Past Producer | 40.303, -75.848 |
| Fritz Island Mine/Raudenbush Mine | Iron | Magnetite | Past Producer | 40.303, -75.919 |
| Tunnel Mine & 6 Additional Mines | Iron | Magnetite | Past Producer | 40.406, -75.807 |
| French Creek Mines | Iron | Magnetite | Past Producer | 40.188, -75.733 |
| Dillsburg Area | Iron | Magnetite | Past Producer | 40.111, -77.008 |
| Cornwall Mine | Iron | Magnetite | Past Producer | 40.269, -76.403 |
| Ruth Mine | Iron | Magnetite | Past Producer | 40.294, -76.062 |
| J.B. Latshawharvey Mine & 4 Additional | Iron | Magnetite | Past Producer | 40.092, -75.625 |
| Fegley Mine & 2 Additional | Iron | Magnetite | Past Producer | 40.111, -75.608 |
| Green's Iron Mines | Iron | Magnetite | Past Producer | 40.108, -75.816 |
| Mine Bank Group | Iron | Magnetite | Past Producer | 40.035, -76.966 |
| Cornwall Mine | Iron, Cobalt | Magnetite, Pyrite, Chalcopyrite | Past Producer | 40.269, -76.403 |
| Grace Mine | Cobalt, Iron | Magnetite, Pyrite, Chalcopyrite, Covellite, Digenite | Past Producer | 40.172, -75.882 |
| Wet Pit Slaymaker Property | Chromium | — | Prospect | 39.733, -76.162 |
| Red Pit Mine | — | — | Past Producer | 39.723, -76.162 |
| Wood Mine | — | — | Past Producer | 39.729, -76.106 |
| Cornwall Mine and Pellet Plant | — | — | Past Producer | 40.269, -76.403 |
| Honeybrook Anorthosite | Aluminum | — | Prospect | 40.090, -75.830 |
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