RockWoof
Check access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.

Found alongside

Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.

By county

Middlesex County (16) · Litchfield County (12) · Fairfield County (10) · New Haven County (4) · Hartford County (3)

Sites

SiteCommodityMinerals recordedStatusApprox. location
Thomaston Fluorite and Sulfide OccurrenceIron, Fluorine-Fluorite, LeadBarite, Sphalerite, Chalcopyrite, Pyrite, Galena, FluoriteOccurrence41.700, -73.068
East Village Monroe Feldspar Pegmatite QuarryFeldsparBeryl, Columbite, Feldspar, GarnetPast Producer41.365, -73.184
Bordonaro Beryl Prospect and Feldspar and Mica MineFeldsparBeryl, Quartz, Muscovite, PlagioclasePast Producer41.622, -72.597
Copper Mine No. Di-008Sulfur, CopperChalcopyritePast Producer41.835, -72.916
Ridgefield Pegmatite QuarryFeldsparFeldsparPast Producer41.296, -73.518
Woodbury Pegmatite QuarryFeldsparFeldsparPast Producer41.579, -73.204
Upper Merryall Pegmatite QuarryFeldspar, QuartzFeldsparProducer41.624, -73.434
Captain Cook Pegmatite QuarryFeldsparFeldsparPast Producer41.354, -73.328
Hollister Mica Beryl ProspectFeldspar, Mica, Beryllium, Tantalum, Niobium (Columbium)Feldspar, Quartz, Beryl, Mica, Tantalite, ColumbiteProducer41.648, -72.593
Microscopic Fluorite Occurrence No. El-001—FluoriteOccurrence41.245, -73.179
Microscopic Fluorite Occurrence No. Ek-029—FluoriteOccurrence41.261, -73.207
Bassett's Arsenopyrite MineArsenicGalena, Pyrite, SphaleriteOccurrence41.342, -73.099
Roxbury Falls Garnet QuarryGarnetGarnetPast Producer41.507, -73.303
Roxbury Falls Garnet Quarry No. Fj-015GarnetGarnetPast Producer41.513, -73.300
Roxbury Falls Garnet Quarry No. Fj-14GarnetGarnetPast Producer41.541, -73.313
Kent Limonite MineIron, ManganeseLimonite, Melanterite, Pyrolusite, Siderite, SphaleritePast Producer41.687, -73.448
Pool Nickel Sulfide MineSulfur, Iron, NickelMagnetite, Marcasite, Pentlandite, Chalcopyrite, Pyrrhotite, Pyrite, Hematite, IlmenitePast Producer41.739, -73.259
Grannis Nickel Sulfide MineSulfur, Iron, NickelMagnetite, Marcasite, Pentlandite, Chalcopyrite, Pyrrhotite, Pyrite, Hematite, IlmenitePast Producer41.737, -73.273
Reeb Mica MineMicaMica, Plagioclase, QuartzPast Producer41.547, -72.536
Markham Mica MineMicaMica, QuartzPast Producer41.549, -72.535
Knapp Mica ProspectMicaMuscovite, Plagioclase, QuartzPast Producer41.870, -72.938
Southford Quartz Pegmatite QuarryQuartzMuscovite, Plagioclase, QuartzProducer41.449, -73.176
Roebling Mica, Feldspar, Beryl MineMica, Feldspar, GemstoneMuscovite, Plagioclase, QuartzPast Producer41.656, -73.435
White Rock Pegmatite QuarriesFeldsparMuscovite, Quartz, Beryl, FeldsparProducer41.553, -72.606
Mt. Tom Beryl ProspectBerylliumMuscovite, Quartz, Plagioclase, BerylOccurrence41.494, -72.476
Great Hill State Forest No. 1 Mica QuarryMicaPerthite, Beryl, Plagioclase, Quartz, MuscovitePast Producer41.596, -72.541
Anderson Mica Mines and Swanson Lithia MineMica, LithiumPerthite, Muscovite, Plagioclase, Quartz, Cleavelandite, LepidolitePast Producer41.515, -72.522
Copper Occurrences No. Ek-003CopperPyrite, ChalcopyriteOccurrence41.412, -73.071
Copper Prospect No. Ek-002CopperPyrite, ChalcopyriteOccurrence41.429, -73.074
Enegren (Power) Mica MineMicaQuartz, Perthite, MuscoviteProducer41.517, -72.522
Gillette Gem Tourmaline, Mineral Specimens, Mica, Feldspar Mine (AlsoGemstone, Mica, FeldsparQuartz, Perthite, Plagioclase, Muscovite, TourmalinePast Producer41.493, -72.511
Wilton Silver and Galena Chalcopyrite MineSilverSphalerite, Chalcopyrite, Pyrite, GalenaPast Producer41.238, -73.430
East Selden Mica, Beryl, Feldspar QuarryMica, Feldspar, Tantalum, Niobium (Columbium)Tantalite, Columbite, Quartz, Feldspar, Beryl, Plagioclase, MuscovitePast Producer41.530, -72.529
Tollgate Mica-Feldspar MineNiobium (Columbium), Feldspar, Mica, TantalumTantalite, Columbite, Quartz, Feldspar, MuscovitePast Producer41.532, -72.611
Strickland-Cramer Feldspar-Mica QuarriesTantalum, Niobium (Columbium), Beryllium, Mica, REE, FeldsparTantalite, Columbite, Quartz, Uraninite, Garnet, Lepidolite, Spodumene, Beryl, Mica, FeldsparPast Producer41.592, -72.592
Arnold Pegmatite QuarryFeldspar—Producer41.472, -72.507
West Redding Garnet OccurrenceGarnet—Occurrence41.322, -73.438
Quartz Rock Quarry No. Ek-023Quartz—Past Producer41.304, -73.126
Arsenopyrite Mine No. Ek-017Arsenic—Past Producer41.354, -73.234
West Redding MineGarnet—Past Producer41.326, -73.425
Garnet MineGarnet—Past Producer41.554, -72.546
Gillette Quarry——Past Producer41.492, -72.511
Strickland-Cramer QuarryMica, Feldspar—Past Producer41.592, -72.592
Roxbury Falls Garnet MineGarnet—Past Producer41.541, -73.313
Roxbury Falls MineGarnet—Past Producer41.509, -73.296

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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