RockWoofFound alongside
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
24 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
10 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
10 sites
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
6 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
5 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
4 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Putnam County (10) · Dutchess County (4) · St. Lawrence County (2) · Columbia County (2) · Westchester County (2) · Clinton County (1) · Queens County (1) · Rockland County (1) · Sullivan County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Sing Sing Silver Mine | Lead | Chalcocite, Chalcopyrite, Galena, Malachite, Silver | Past Producer | 41.141, -73.865 |
| Ancram Lead Mine | Lead, Silver | Chalcocite, Chalcopyrite, Galena, Pyrite, Sphalerite, Wulfenite | Producer | 42.021, -73.600 |
| Judge Bockee-Ward Bryant Lead Mine | Lead, Silver | Chalcocite, Galena, Malachite, Pyrite, Sphalerite | Past Producer | 41.905, -73.598 |
| Croton-Mc Collum Magnetite Mine | Iron | Chalcopyrite, Magnetite, Pyrite | Past Producer | 41.365, -73.654 |
| Croton - Theall Magnetite Mine | Iron | Chalcopyrite, Magnetite, Pyrite | Past Producer | 41.368, -73.651 |
| Phillips Sulfide, Magnetite, and Uranium Mine | Iron, Sulfur | Chalcopyrite, Magnetite, Pyrite, Pyrrhotite, Uraninite | Past Producer | 41.326, -73.950 |
| Putnam County Arsenic Mine | Arsenic, Sulfur, Iron | Chalcopyrite, Pyrite | Past Producer | 41.457, -73.716 |
| Plattsburg | Chromium | Chromite | Occurrence | 44.695, -73.447 |
| Russell | Molybdenum, Copper | Molybdenite | Occurrence | 44.383, -75.100 |
| Edwards Mine | Zinc | Sphalerite, Pyrite, Galena, Pyrrhotite, Magnetite, Hematite, Barite | Past Producer | 44.331, -75.267 |
| General Bush Copper Mine | Copper | — | Past Producer | 41.849, -73.564 |
| Sing Sing Ag Mine | Lead | — | Past Producer | 41.141, -73.865 |
| Phillips Mine-Camp Smith Area | — | — | Past Producer | 41.324, -73.948 |
| (Facility) Laurel Hill Refinery | Copper | — | Plant | 40.900, -73.900 |
| General Bush Copper Mine | Copper | — | Past Producer | 41.849, -73.564 |
| Ladentown Copper Deposit | Copper | — | Occurrence | 41.189, -74.066 |
| Shawangunk Mine | — | — | Past Producer | 41.592, -74.444 |
| Judge Bockee-Ward Bryant Mine | Lead | — | Past Producer | 41.905, -73.598 |
| Putnam County Arsenic Mine | Arsenic | — | Past Producer | 41.457, -73.716 |
| Croton Magnetite Iron Mines | — | — | Past Producer | 41.367, -73.653 |
| Phillips Sulfide, Magnetite Mine | Iron | — | Past Producer | 41.326, -73.950 |
| Ancram Lead Mines | — | — | Past Producer | 42.050, -73.634 |
| Croton-Theall Magnetite Mine | Iron | — | Past Producer | 41.368, -73.651 |
| Sparta Copper Deposit | Copper | — | Occurrence | 41.131, -73.863 |
Back to Rockhounding in New York.
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