RockWoofSketch map
Woof’s favorite find
Piscataqua Prospect
We picked it because its USGS record mentions 1 gem or collectible mineral (Gold) and 2 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as unknown. Minerals mentioned: Gold, Copper. Approx. location 43.735, -70.278. 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.
The mineral was noted here, without development.
Status not recorded.
Explored or test-dug, with no recorded production.
Status terms come from USGS MRDS records.
Mineral cards
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
12 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
7 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
2 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
1 site
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 17Feldspar 9Gemstone 4Mica 3Sulfur 2Beryllium 1Kyanite 1Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Jewels Island | Sulfur | — | Past Producer | 43.682, -70.092 |
| Tyron Mountain Quarries | Mica | — | Unknown | 43.910, -70.193 |
| Granite Quarry | Granite | — | Past Producer | 43.845, -70.180 |
| Morse Quarry | Feldspar | — | Past Producer | 43.883, -70.017 |
| E B Mallett Quarry | Granite | — | Past Producer | 43.875, -70.085 |
| Granite Quarry | Granite | — | Past Producer | 43.850, -70.177 |
| Mrs. Charles Taylor Mine | Feldspar | — | Past Producer | 43.802, -70.131 |
| Granite Quarry | Granite | — | Past Producer | 43.846, -70.180 |
| Granite Quarry | Granite | — | Past Producer | 43.828, -70.108 |
| La Chance Mine | Feldspar | — | Past Producer | 43.884, -70.042 |
| Old Granite Quarry | Granite | — | Past Producer | 43.962, -70.670 |
| Granite Quarry | Granite | — | Past Producer | 43.842, -70.264 |
| New Meadows Quarry | Granite | — | Past Producer | 43.890, -69.886 |
| Falmouth Copper Deposit | — | — | Unknown | 43.742, -70.271 |
| Unnamed Prospect | Gemstone, Granite | — | Occurrence | 43.835, -70.108 |
| Dwelly Mine | Feldspar | — | Past Producer | 43.931, -70.074 |
| Larrabee Quarries | Beryllium | — | Past Producer | 43.880, -70.017 |
| Woodside Quarry | Feldspar, Granite | — | Past Producer | 44.887, -70.036 |
| Freeport Quarry | Granite | — | Past Producer | 43.853, -70.096 |
| Grant Quarry | Granite | — | Past Producer | 43.918, -70.024 |
| Knights Ledge Quarry | Granite | — | Past Producer | 43.857, -70.180 |
| Piscataqua Prospect | — | — | Unknown | 43.735, -70.278 |
| Old Granite Quarry | Granite | — | Past Producer | 43.904, -70.474 |
| Chute Prospect | Feldspar | — | Prospect | 43.927, -70.529 |
| Granite Quarry | Granite | — | Past Producer | 43.844, -70.177 |
| Grant Quarry | Feldspar | — | Past Producer | 43.899, -70.041 |
| Unnamed Diopside Prospect | Gemstone | — | Occurrence | 43.881, -70.344 |
| Old Spar Mine | Feldspar | — | Past Producer | 43.800, -70.656 |
| Prides Quarry | Granite | — | Past Producer | 43.722, -70.338 |
| Kelley Prospect | Mica | — | Prospect | 43.861, -70.683 |
| Wolf Neck Occurrence | Sulfur, Mica | — | Occurrence | 43.817, -70.098 |
| Garland Mine | Feldspar | — | Past Producer | 43.880, -70.002 |
| Sillimanite Occurrence | Kyanite | — | Occurrence | 43.838, -70.201 |
| Unnamed Prospect | Gemstone | — | Occurrence | 43.851, -70.383 |
| Chute Prospect | Gemstone | — | Prospect | 43.937, -70.526 |
| Pownal Quarries | Granite | — | Past Producer | 43.846, -70.175 |
Fossil collections
The Paleobiology Database lists 12 fossil collection records in Cumberland County. These are research records, not public dig sites.
Nearby counties
Sagadahoc County · Androscoggin County · Kennebec County · Lincoln County · Oxford 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