RockWoofFound alongside
Fluorite
Mohs 4. Cubes in purple, green or yellow; many glow under UV. Mindat
13 sites
Garnet
Mohs 6.5–7.5. Usually deep red, round many-faced crystals. Mindat
4 sites
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
4 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
2 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
2 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
2 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
St. Lawrence County (6) · Jefferson County (2) · Orange County (2) · Essex County (1) · Clinton County (1) · Lewis County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Parish Deposit | Iron | Magnetite | Occurrence | 44.353, -74.947 |
| Benson Mines | Iron | Magnetite | Past Producer | 44.181, -74.996 |
| Unnamed Deposit | Fluorine-Fluorite | — | Past Producer | 44.302, -75.688 |
| Brandy Brook Southeast Occurrence | Iron | — | Occurrence | 44.207, -74.790 |
| East Pitcairn Fluorite Deposit | Fluorine-Fluorite | — | Occurrence | 44.219, -75.180 |
| Mineville Mines | Iron | — | Past Producer | 44.060, -73.460 |
| Unnamed Fluorite Deposit | Fluorine-Fluorite | — | Past Producer | 44.303, -75.687 |
| Mineral Point Deposit | Lead | — | Occurrence | 44.474, -75.659 |
| Palmer Hill Group of Mines | — | — | Past Producer | 44.466, -73.671 |
| Edenville Fluorite Deposit | Fluorine-Fluorite | — | Occurrence | 41.291, -74.411 |
| Gouverneur Talc Deposit | Talc-Soapstone | — | Occurrence | 44.312, -75.468 |
| Martinsburg Deposit | Fluorine-Fluorite | — | Occurrence | 43.744, -75.481 |
| Amity Fluorite Deposit | Fluorine-Fluorite | — | Occurrence | 41.258, -74.466 |
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 USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date.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