RockWoofSketch map
Woof’s favorite find
Benner Prospect
We picked it because its USGS record mentions 2 of the minerals on our cards and 2 of our card minerals overall. That ties with 3 other site(s), so we broke the tie by mine status (past producers first), then USGS record quality, then name. USGS lists it as prospect for Feldspar. Minerals mentioned: Mica, Feldspar. Approx. location 44.056, -69.379. 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?
Produced ore or material at some point in the past.
Explored or test-dug, with no recorded production.
Status terms come from USGS MRDS records.
Mineral cards
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
4 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
4 sites
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
Granite 4Feldspar 3Mica 1Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Round Pond Quarry | Granite | — | Past Producer | 43.946, -69.450 |
| Lapoutre Prospect | Mica | — | Prospect | 44.016, -69.645 |
| Williams Mine | Feldspar | — | Prospect | 44.965, -69.609 |
| Poole Prospect | Feldspar | — | Prospect | 44.972, -69.605 |
| Benner Prospect | Feldspar | — | Prospect | 44.056, -69.379 |
| Waldoboro Quarry | Granite | — | Past Producer | 44.115, -69.387 |
| Jewetts Black Granite Quarry | Granite | — | Past Producer | 44.165, -69.581 |
| Granite Quarry | Granite | — | Past Producer | 44.102, -69.382 |
Nearby counties
Kennebec County · Knox County · Sagadahoc County · Cumberland County · Waldo County
Maine mineral guides
Back to all Maine 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 USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date.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