RockWoofSketch map
Woof’s favorite find
Feltville Mine
We picked it because its USGS record mentions 1 of the minerals on our cards and 1 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as past producer for Copper. Minerals mentioned: Copper. Approx. location 40.636, -74.445. 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?
Status not recorded.
Produced ore or material at some point in the past.
Was producing when the record was made.
Status terms come from USGS MRDS records.
Mineral cards
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
1 site
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
No individual minerals are listed in these records.
Commodities
Iron 3Iodine 2Copper 1Kaolin 1REE 1Graphite 1Tungsten 1Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Feltville Mine | Copper | — | Past Producer | 40.636, -74.445 |
| Georgia Kaolin/ Elizabeth, N.J. | Kaolin | — | Unknown | 40.657, -74.214 |
| Varlacoid Chemical/Elizabeth, N.J. | REE | — | Unknown | 40.667, -74.208 |
| Iron Oxide Crppigments/Elizabeth | Iron | — | Past Producer | 40.657, -74.214 |
| Rahway Plant | Iodine | — | Unknown | 40.608, -74.283 |
| Celanese Plant/ Summit, N.J. | Graphite | — | Unknown | 40.715, -74.361 |
| Linden | Iodine | — | Producer | 40.629, -74.254 |
| John Roebling Plant Pigments | Iron | — | Past Producer | 41.000, -74.283 |
| Adamas Carbide/ Kenilworth, N.J. | Tungsten | — | Producer | 40.676, -74.297 |
| Seneca Coal/ Elizabeth, N.J. | Iron | — | Unknown | 40.657, -74.214 |
Fossil collections
The Paleobiology Database lists 3 fossil collection records in Union County. These are research records, not public dig sites.
Nearby counties
Essex County · Middlesex County · Hudson County · Bergen County · Somerset County
New Jersey mineral guides
- Quartz in New Jersey
- Garnet in New Jersey
- Mica in New Jersey
- Feldspar in New Jersey
- Magnetite in New Jersey
- Pyrite in New Jersey
Back to all New Jersey 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