RockWoofFound alongside
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
50 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
12 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
11 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
7 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
2 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
1 site
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Grafton County (30) · Coos County (9) · Sullivan County (6) · Merrimack County (2) · Cheshire County (2) · Carroll County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Milan Mine | Copper | Chalcopyrite, Galena, Sphalerite, Pyrite, Bornite, Chalcocite | Past Producer | 44.565, -71.254 |
| Old Copper Mine | Copper | — | Past Producer | 43.678, -72.179 |
| Lebanon I89 Roadcut Cu/Moly Showings | Sulfur-Pyrite, Copper, Molybdenum, Lead | — | Occurrence | 43.636, -72.284 |
| Croydon-Corbin Park | Zinc, Copper, Lead | — | Past Producer | 43.432, -72.248 |
| Farnum Hill Copper Prospect | Copper, Iron, Pig Iron | — | Occurrence | 43.620, -72.272 |
| Neal Mine | Copper, Sulfur-Pyrite | — | Producer | 43.282, -72.335 |
| Silverdale Mine | Lead, Zinc | — | Past Producer | 43.279, -71.341 |
| Ore Hill Mine Warren Mine | Lead | — | Past Producer | 43.942, -71.933 |
| Nay Mine | Copper | — | Past Producer | 44.569, -71.297 |
| Gardner Mt. Mine/Gregory Mine/Quint Mine | Copper | — | Past Producer | 44.315, -71.927 |
| Granite State Paddock Mine | Copper | — | Past Producer | 44.279, -71.963 |
| Forsyth Mine | Copper | — | Past Producer | 44.231, -71.988 |
| Dalton Au Mine | Copper | — | Past Producer | 44.369, -71.719 |
| Stevens Mine/Lang Mine | Copper | — | Past Producer | 44.221, -72.002 |
| Haviland Mine | Copper | — | Past Producer | 44.239, -72.000 |
| King Mine | Copper | — | Past Producer | 43.697, -72.186 |
| Hubbard-Neal Mine | Copper | — | Past Producer | 43.306, -72.311 |
| Franham Hill Cu Prospect | Copper | — | Occurrence | 43.618, -72.268 |
| Shaws Corner Sulfide Showing | Sulfur-Pyrite | — | Occurrence | 43.052, -72.329 |
| Cleaveland Mine? | Copper | — | Past Producer | 43.661, -72.151 |
| Croydon Pyrite Mines | Copper, Zinc | — | Past Producer | 43.435, -72.247 |
| Ore Hill | Zinc, Lead, Copper | — | Past Producer | 43.937, -71.948 |
| Surry Mountain Mine | Lead | — | Past Producer | 43.042, -72.320 |
| Nay Mine | — | — | Unknown | 44.439, -71.225 |
| Ney Prospect | Copper | — | Past Producer | 43.419, -71.803 |
| Milan Mine | — | — | Past Producer | 44.567, -71.249 |
| Dalton Mine | Gold | — | Past Producer | 44.377, -71.729 |
| Mineral Hill Deposit | — | — | Prospect | 43.675, -71.008 |
| Stevens Mine | Copper | — | Past Producer | 44.225, -72.009 |
| Copperville Mine | Copper | — | Unknown | 44.536, -71.239 |
| Ore Hill Zinc-Lead Mine. | — | — | Past Producer | 43.938, -71.948 |
| Copper Mine | Copper | — | Past Producer | 43.685, -72.180 |
| Forsyth Mine | — | — | Past Producer | 44.203, -72.029 |
| Croydon Mine | Copper, Zinc, Sulfur | — | Unknown | 43.421, -72.245 |
| Farnum Hill Prospect | Copper | — | Prospect | 43.621, -72.278 |
| Gregory Mine | — | — | Past Producer | 44.319, -71.934 |
| Thomas Saville Mine | Copper | — | Past Producer | 44.260, -71.975 |
| Granite State Copper Mine | Copper | — | Past Producer | 44.233, -71.996 |
| Neal Mine | Copper | — | Past Producer | 43.296, -72.315 |
| Gardner Mountain Mine | — | — | Past Producer | 44.328, -71.944 |
| Paddock Mine Shaft Number Two | — | — | Past Producer | 44.275, -71.970 |
| Lang Mine | Copper | — | Past Producer | 44.224, -72.015 |
| Judd Jones Prospect | Copper | — | Prospect | 44.271, -72.034 |
| Old Howard Copper Prospect | Sulfur | — | Prospect | 44.514, -71.168 |
| Copper Mine | Copper | — | Past Producer | 44.264, -72.033 |
| Boutwell-Page Hill Prospect | Copper | — | Prospect | 44.517, -71.533 |
| Quint Mine | — | — | Past Producer | 44.319, -71.901 |
| Copper Mine | Copper | — | Past Producer | 44.177, -71.748 |
| Prospect Hill Mine | Silver, Gold, Copper | — | Past Producer | 43.807, -72.238 |
| Haviland Copper Mine | Copper | — | Past Producer | 44.237, -71.999 |
Back to Rockhounding in New Hampshire.
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