RockWoofFound alongside
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
13 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
11 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
8 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
5 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
5 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.
By county
Fairfield County (6) · Litchfield County (2) · Middlesex County (2) · Hartford County (2) · New Haven County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Roxbury Iron Mine | Iron | Arsenopyrite, Galena, Chalcopyrite, Pyrite, Sphalerite, Siderite | Past Producer | 41.568, -73.339 |
| Mattabesset River Lead Mine | Lead | Barite, Galena, Pyrite, Sphalerite | Past Producer | 41.621, -72.791 |
| Thomaston Fluorite and Sulfide Occurrence | Iron, Fluorine-Fluorite, Lead | Barite, Sphalerite, Chalcopyrite, Pyrite, Galena, Fluorite | Occurrence | 41.700, -73.068 |
| Old Sandy Hook Gold Mine Prospect and Sulfide Occurrence | Lead | Calcite, Sphalerite, Hematite, Quartz, Pyrite, Galena | Occurrence | 41.432, -73.282 |
| Chatham Great Hill Cobalt Nickel Arsenopyrite Mine | Arsenic, Iron, Nickel, Cobalt | Cobaltite, Erythrite, Galena, Niccolite, Siderite, Smaltite, Sphalerite | Past Producer | 41.577, -72.550 |
| Lane's Bismuth and Sulfide Mine In Monroe | Bismuth | Galena, Bismuth, Arsenopyrite, Sphalerite, Marcasite, Pyrrhotite | Past Producer | 41.333, -73.214 |
| Bassett's Arsenopyrite Mine | Arsenic | Galena, Pyrite, Sphalerite | Occurrence | 41.342, -73.099 |
| Bristol Copper Mine | Molybdenum, Silver, Copper, Sulfur | Molybdenite, Barite, Pyrite, Sphalerite, Galena, Chalcocite, Chalcopyrite, Bornite, Malachite | Past Producer | 41.719, -72.924 |
| Monroe (Lane's Mine) | Silver, Bismuth, Tungsten | Silver, Bismuth, Arsenopyrite, Galena, Sphalerite, Marcasite, Scheelite, Tungstite, Wolframite | Occurrence | 41.367, -73.200 |
| Wilton Silver and Galena Chalcopyrite Mine | Silver | Sphalerite, Chalcopyrite, Pyrite, Galena | Past Producer | 41.238, -73.430 |
| Middletown Lead-Silver Mine | Silver, Lead | Sphalerite, Chalcopyrite, Pyrite, Galena, Fluorite, Barite, Anglesite, Hydrozincite, Marcasite | Past Producer | 41.559, -72.612 |
| Brookfield Lead Mine | Sulfur, Zinc, Lead | Sphalerite, Galena | Past Producer | 41.467, -73.406 |
| Trumbull Tungsten, Topaz, and Sulfide Mine | Feldspar, Quartz, Tungsten | Sphalerite, Galena, Fluorite, Marcasite, Chalcopyrite, Pyrite, Limestone, Quartz, Feldspar, Scheelite, Wolframite, Bismuth, Barite, Arsenopyrite, Topaz | Past Producer | 41.290, -73.226 |
Back to Rockhounding in Connecticut.
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