RockWoofSketch map
Woof’s favorite find
Grace Mine
We picked it because its USGS record mentions 1 gem or collectible mineral (Gold) and 6 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as past producer for Cobalt, Iron. Minerals mentioned: Gold, Mica, Magnetite, Pyrite, Galena, Copper. Approx. location 40.172, -75.882. 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.
Explored or test-dug, with no recorded production.
A processing plant site.
Was producing when the record was made.
Status terms come from USGS MRDS records.
Mineral cards
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
16 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
4 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
3 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
2 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
2 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
1 site
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
Magnetite 16Limonite 6Pyrite 2Hematite 2Chalcopyrite 1Covellite 1Digenite 1Commodities
Iron 97Dolomite 18Gold 3Copper 3Cobalt 2Niobium (Columbium) 2Palladium 1Lead 1Platinum 1Beryllium 1Sites (first 40)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Eureka Mine | Iron | Hematite | Past Producer | 40.319, -75.998 |
| Seitzinger Mine | Iron | Hematite | Past Producer | 40.333, -75.955 |
| Manwiller/Weaver/Hunter Mines | Iron | Limonite | Past Producer | 40.358, -75.786 |
| Moselem Mine | Iron | Limonite | Past Producer | 40.503, -75.866 |
| Unnamed Banks | Iron | Limonite | Past Producer | 40.493, -75.672 |
| Unnamed Banks | Iron | Limonite | Past Producer | 40.552, -75.697 |
| Unnamed Banks | Iron | Limonite | Past Producer | 40.519, -75.687 |
| Unnamed--Wernersville Area | Iron | Limonite | Past Producer | 40.333, -76.100 |
| Ruth Mine | Iron | Magnetite | Past Producer | 40.294, -76.062 |
| Bieber's Mine/Brumbach's Mine | Iron | Magnetite | Past Producer | 40.440, -75.763 |
| Miller's Mine | Iron | Magnetite | Past Producer | 40.478, -75.616 |
| Trexler's Mine/Beitler's Mine | Iron | Magnetite | Past Producer | 40.446, -75.665 |
| Heydt Mine/Miller & Yoder Mine | Iron | Magnetite | Past Producer | 40.428, -75.718 |
| Dotterer's Mine & 2 Additional | Iron | Magnetite | Past Producer | 40.385, -75.708 |
| Tunnel Mine & 6 Additional Mines | Iron | Magnetite | Past Producer | 40.406, -75.807 |
| Grace Iron-Colbalt Minemorgantown/Jones & Kinney Mine/Bylers Mine | Iron | Magnetite | Past Producer | 40.171, -75.879 |
| Gilberg Mine | Iron | Magnetite | Past Producer | 40.407, -75.627 |
| Fritz Island Mine/Raudenbush Mine | Iron | Magnetite | Past Producer | 40.303, -75.919 |
| Esterly Mine | Iron | Magnetite | Past Producer | 40.303, -75.848 |
| Boyertown Mines--Warwick/Gabel/Phoenix/Brower Mines | Iron | Magnetite | Past Producer | 40.336, -75.651 |
| Gilbert Shaft | Iron | Magnetite | Past Producer | 40.361, -75.627 |
| Wheatfield Mine | Iron | Magnetite | Past Producer | 40.299, -76.036 |
| Knabb's Mine | Iron | Magnetite | Past Producer | 40.356, -75.863 |
| Grace Mine | Cobalt, Iron | Magnetite, Pyrite, Chalcopyrite, Covellite, Digenite | Past Producer | 40.172, -75.882 |
| Boyertown | Palladium, Gold, Lead, Platinum | Pyrite | Occurrence | 40.424, -75.572 |
| Bittenbender Mine | Iron | — | Past Producer | 40.465, -75.599 |
| Bethlehem Iron Co. Mine | Iron | — | Past Producer | 40.482, -75.616 |
| Dolomite Prospect | Dolomite | — | Occurrence | 40.333, -76.095 |
| Hottenstien Dolomite Quarry | Dolomite | — | Past Producer | 40.518, -75.765 |
| Yoder Mine | Iron | — | Past Producer | 40.420, -75.702 |
| Trexler Mine | Iron | — | Past Producer | 40.444, -75.672 |
| (Facility) Ontelaunee Smelter--Reading, Pa. | Copper | — | Plant | 40.417, -75.950 |
| Kinney Mine | — | — | Past Producer | 40.171, -75.849 |
| Unnamed Dolomite Quarry | Dolomite | — | Past Producer | 40.375, -75.752 |
| Mt Pleasant Grove Iron Mine | Iron | — | Past Producer | 40.393, -75.614 |
| Eureka Bank | Iron | — | Past Producer | 40.315, -75.990 |
| Pikesville Prospect | — | — | Past Producer | 40.424, -75.696 |
| Warwick Mine | — | — | Past Producer | 40.330, -75.641 |
| Kawecki-Berylco Alloys--Reading, Pa | Beryllium | — | Past Producer | 40.328, -75.928 |
| Caroline Schall Estate Prospect | Iron | — | Occurrence | 40.441, -75.618 |
Fossil collections
The Paleobiology Database lists 12 fossil collection records in Berks County. These are research records, not public dig sites.
Nearby counties
Lehigh County · Chester County · Montgomery County · Schuylkill County · Bucks County
Pennsylvania mineral guides
- Mica in Pennsylvania
- Magnetite in Pennsylvania
- Pyrite in Pennsylvania
- Copper in Pennsylvania
- Silver in Pennsylvania
Back to all Pennsylvania 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