Sketch map
Woof’s favorite find
Franklin Co. Prospect
We picked it because its USGS record mentions 2 gem or collectible minerals (Quartz, Silver) and 5 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as occurrence for Zinc. Minerals mentioned: Quartz, Pyrite, Galena, Copper, Silver. Approx. location 44.978, -72.950. 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?
The mineral was noted here, without development.
Produced ore or material at some point in the past.
Explored or test-dug, with no recorded production.
Status not recorded.
Status terms come from USGS MRDS records.
Mineral cards
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
5 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
4 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
3 sites
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
1 site
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
1 site
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
1 site
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
Hematite 8Limonite 5Chalcopyrite 3Steatite 3Rhodonite 1Silver 1Galena 1Sphalerite 1Bornite 1Marble 1Calcite 1Magnetite 1Commodities
Iron 11Copper 3Talc-Soapstone 3Zinc 2Marble 1Dimension 1Lead 1Calcium 1Manganese 1Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Berkshire Copper Mine | Copper | Bornite, Chalcopyrite | Past Producer | 44.998, -72.765 |
| Richford Copper Prospect | Copper | Chalcopyrite | Occurrence | 45.008, -72.643 |
| Sheldon Iron Mine | Iron | Hematite | Past Producer | 44.883, -72.924 |
| Saint Rock Iron Mine | Iron | Hematite | Past Producer | 44.864, -72.951 |
| Unnamed Iron Occurrence | Iron | Hematite | Occurrence | 44.946, -72.775 |
| Unnamed Iron Mine | Iron | Hematite | Occurrence | 44.733, -72.918 |
| Unnamed Iron Occurrence | Iron | Hematite | Occurrence | 44.997, -72.811 |
| Unnamed Manganese Prospect | Iron | Hematite, Rhodonite | Occurrence | 44.999, -72.706 |
| St Rock Iron Mine | Iron | Limonite | Past Producer | 44.865, -72.951 |
| Orange Phelps Mine | Iron | Limonite | Past Producer | 44.974, -72.825 |
| Sheldon Iron Mine | Iron | Limonite | Past Producer | 44.883, -72.923 |
| Unnamed Iron Occurrence | Iron | Limonite, Hematite | Occurrence | 45.000, -72.738 |
| Unnamed Iron Mines | Iron | Magnetite, Hematite, Limonite | Past Producer | 44.917, -73.125 |
| Joyal Marble Quarry | Marble, Dimension | Marble, Calcite | Past Producer | 44.827, -72.732 |
| Franklin Co. Prospect | Zinc | Silver, Galena, Chalcopyrite, Sphalerite | Occurrence | 44.978, -72.950 |
| Unnamed Talc Occurrence | Talc-Soapstone | Steatite | Occurrence | 44.938, -72.818 |
| Ledge Mine | Talc-Soapstone | Steatite | Occurrence | 44.841, -72.688 |
| Montgomery Center Talc Prospect | Talc-Soapstone | Steatite, Talc | Occurrence | 44.867, -72.634 |
| Franklin Co. Prospect | Zinc, Lead | — | Occurrence | 45.000, -72.908 |
| Berkshire Copper Mine | Copper | — | Past Producer | 44.995, -72.764 |
| Berkshire Mine | — | — | Prospect | 44.993, -72.775 |
| Swanton Lime Works/ Swanton, Vt. | Calcium | — | Unknown | 44.919, -73.120 |
Fossil collections
The Paleobiology Database lists 7 fossil collection records in Franklin County. These are research records, not public dig sites.
Nearby counties
Orleans County · Lamoille County · Grand Isle County · Chittenden County · Washington County
Vermont mineral guides
- Tourmaline in Vermont
- Quartz in Vermont
- Garnet in Vermont
- Gold in Vermont
- Mica in Vermont
- Feldspar in Vermont
Back to all Vermont 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