RockWoofFound alongside
Beryl
Mohs 7.5–8. Six-sided crystals; aquamarine and emerald are beryl. Mindat
20 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
13 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
11 sites
Tourmaline
Mohs 7–7.5. Long striated crystals, often black (schorl) or green and pink (elbaite). Mindat
9 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
8 sites
Garnet
Mohs 6.5–7.5. Usually deep red, round many-faced crystals. Mindat
4 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Oxford County (17) · Hancock County (1) · Sagadahoc County (1) · Androscoggin County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Scotty Mine | Beryllium | Beryl | Past Producer | 44.541, -70.727 |
| South Twin Mtn Beryl Prospect | Beryllium | Beryl | Occurrence | 44.596, -70.609 |
| Brown-Thurston Beryl Prospect | Beryllium | Beryl, Columbite, Tantalite, Cassiterite | Occurrence | 44.580, -70.629 |
| Bumpus Quarry | Beryllium, Mica, Feldspar, Cesium | Beryl, Mica, Feldspar | Past Producer | 44.311, -70.781 |
| Coombs Feldspar Quarry | Feldspar, Tantalum, Niobium (Columbium) | Beryl, Muscovite, Tantalite, Columbite | Producer | 44.033, -69.916 |
| Broome Prospect | Lithium, Beryllium | Beryl, Spodumene | Occurrence | 44.543, -70.730 |
| Black Mt. Quarry | Lithium, Feldspar, Mica, Beryllium | Cassiterite, Columbite, Beryl, Spodumene, Lepidolite, Feldspar, Mica | Past Producer | 44.584, -70.646 |
| Nevel Mine | Mica, Feldspar | Feldspar, Beryl, Columbite, Tantalite, Spodumene, Mica | Past Producer | 44.543, -70.722 |
| Long Island Molybdenite Occurrence, East Shore | Molybdenum, Tungsten | Huebnerite, Beryl, Molybdenite | Occurrence | 44.345, -68.489 |
| Bennet Feldspar Quarry | Feldspar, Gemstone | Lepidolite, Beryl, Tantalite, Columbite, Feldspar, Quartz, Tourmaline | Producer | 44.291, -70.427 |
| Mt. Mica | Mica, Gemstone, Feldspar, Tin | Mica, Cassiterite, Lepidolite, Pollucite, Beryl, Feldspar, Tourmaline | Unknown | 44.294, -70.474 |
| Harvard Mine | Mica | Molybdenite, Mica, Pollucite, Spodumene, Beryl | Occurrence | 44.287, -70.643 |
| Dunton Gem Mine | Cesium | Pollucite, Spodumene, Amblygonite, Tantalite, Columbite, Uraninite, Beryl | Past Producer | 44.541, -70.723 |
| Berry Feldspar Quarry | — | — | Past Producer | 44.071, -70.301 |
| Harvard Quarry | — | — | Past Producer | 44.289, -70.643 |
| Black Mountain Quarries | — | — | Past Producer | 44.586, -70.646 |
| Newry Mines | — | — | Past Producer | 44.545, -70.721 |
| Buckfield Pegmatite | — | — | Past Producer | 44.292, -70.426 |
| Little Singepole Quarries | — | — | Past Producer | 44.223, -70.419 |
| Hibbs Feldspar Quarry | — | — | Past Producer | 44.214, -70.401 |
Back to Rockhounding in Maine.
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