RockWoofSketch map
Woof’s favorite find
Lawrence Prospect
We picked it because its USGS record mentions 2 gem or collectible minerals (Gold, Silver) and 3 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, Silver. Approx. location 44.749, -68.901. 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?
Explored or test-dug, with no recorded production.
Produced ore or material at some point in the past.
The mineral was noted here, without development.
Status not recorded.
Status terms come from USGS MRDS records.
Mineral cards
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
23 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
12 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
12 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
6 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
4 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
Chalcopyrite 5Galena 4Sphalerite 2Arsenopyrite 2Tetrahedrite 1Stibnite 1Argentite 1Commodities
Lead 14Silver 14Copper 7Gold 5Zinc 2Manganese 2Antimony 2Slate 1Dimension 1Granite 1Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Vinegar Hill | Gold, Copper | Chalcopyrite, Arsenopyrite | Occurrence | 45.233, -68.488 |
| Garland Mine | Copper, Silver, Lead | Galena, Chalcopyrite | Past Producer | 45.045, -69.164 |
| Preble Hill Mine | Lead | Galena, Chalcopyrite, Arsenopyrite, Sphalerite | Past Producer | 45.049, -69.217 |
| Consolidated Hampden Mine | Silver, Lead | Galena, Tetrahedrite, Stibnite, Chalcopyrite, Argentite | Past Producer | 44.752, -68.895 |
| Mount Chase | Zinc, Copper, Lead | Sphalerite, Chalcopyrite, Galena | Occurrence | 46.134, -68.445 |
| Lawrence Prospect | — | — | Unknown | 44.749, -68.901 |
| Silver Hill Prospect | Silver | — | Prospect | 45.056, -69.200 |
| Cemetary Hill Prospect | Manganese | — | Prospect | 45.073, -68.457 |
| Dexter Prospect | Silver | — | Prospect | 45.022, -69.286 |
| Hampden Mines | — | — | Unknown | 44.755, -68.895 |
| Vinegar Hill Prospect | — | — | Unknown | 45.234, -68.487 |
| Jones Hill Mine | Copper, Lead, Zinc | — | Past Producer | 45.054, -69.209 |
| Exeter Prospect | Lead | — | Prospect | 45.953, -69.178 |
| Palmer Mine | Lead | — | Prospect | 44.803, -69.043 |
| Corrina Mine | Lead | — | Past Producer | 44.929, -69.258 |
| Shorey Prospect | Silver | — | Prospect | 45.219, -68.486 |
| Old Slate Quarry | Slate, Dimension | — | Unknown | 44.794, -69.042 |
| Hall Hill Prospect | Manganese | — | Prospect | 45.006, -68.430 |
| French Mine | Gold | — | Occurrence | 44.946, -69.137 |
| Carmel Antimony Prospect | Antimony | — | Prospect | 44.807, -69.034 |
| Garland Prospect | — | — | Unknown | 45.069, -69.215 |
| Queen City Prospect | Lead | — | Prospect | 44.847, -68.796 |
| Argonaut Mine | Silver, Lead, Copper | — | Past Producer | 44.749, -69.908 |
| Dearborn Prospect | Lead | — | Prospect | 44.984, -69.212 |
| Harrington Mine | Gold | — | Occurrence | 44.814, -69.024 |
| Old Town Prospect | Gold | — | Prospect | 44.914, -68.491 |
| Hermon Hill Quarry | Granite | — | Past Producer | 44.839, -68.872 |
| Hillside Mining Co. Mine | Silver | — | Prospect | 44.840, -68.867 |
| Norumbega Mine | Lead | — | Prospect | 44.774, -68.886 |
| Silver Drift Mine | Lead | — | Past Producer | 44.758, -68.892 |
| Maine Silver Prospect | Silver | — | Prospect | 45.022, -69.286 |
| Levant Prospect | Antimony | — | Prospect | 44.865, -68.933 |
| Mt Pleasant Mine | Silver | — | Past Producer | 44.806, -69.028 |
| Davis Prospect | Silver | — | Prospect | 44.784, -68.879 |
| McKusick Prospect | Gold | — | Prospect | 44.848, -69.021 |
| Exeter Occurrence | Lead | — | Occurrence | 44.965, -69.141 |
| Silver Hill Mine | Copper | — | Past Producer | 45.045, -69.190 |
Fossil collections
The Paleobiology Database lists 10 fossil collection records in Penobscot County. These are research records, not public dig sites.
Nearby counties
Waldo County · Piscataquis County · Somerset County · Hancock County · Kennebec 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