Conklin Limestone Quarry

Bowenite

Also found at:

• North Providence Quarries

Calcite

Common but versatile carbonate mineral that forms in many crystal habits. Found in geodes, cave deposits, and veins throughout the US.

Also found at:

• Yellville Mines (Rush Mining District)
• Long Hill Mine (Old Mine Park)
• Fort Drum Crystal Mine (Ruck's Pit)

Goethite

Also found at:

• Brown County State Park Geodes (Road Cut)
• Prospect Park Quarry

Hematite

Iron oxide mineral responsible for red coloration in rocks. Michigan's Upper Peninsula and New York's Adirondack region contain significant hematite deposits.

Also found at:

• Lake Martin Rockhounding Area
• Prairie Creek (Lamproite Diatreme)
• Champion Mine & Jasper Hill

Quartz Crystals

Clear, smoky, and rose quartz crystals are among the most common and rewarding rockhounding finds. Arkansas produces world-class quartz.

Also found at:

• Alabama Gold Camp
• Horseshoe Mine
• Lake Martin Rockhounding Area

Chalcedony

Microcrystalline quartz found in many varieties including agate, jasper, and petrified wood. Widespread throughout the US in volcanic and sedimentary rocks.

Also found at:

• Black Warrior River Sites
• Opal Basin
• Saddle Mountain

Chert

Also found at:

• Prairie Creek (Lamproite Diatreme)
• Mount Vernon Rockhounding Area
• Hawks Bluff Farm Rocks and Drusy

Lepidocrocite

Also found at:

• No other locations listed yet

Pyrite

Iron sulfide known as Fool's Gold for its metallic luster. Found in many US states, often in association with other minerals. Popular with beginner collectors.

Also found at:

• Hog Mountain
• Flash Mountain Crystal Mine
• Magnet Cove Area

Magnetite

Black iron oxide mineral with natural magnetism. New York's Adirondack region and other iron districts produce magnetite specimens.

Also found at:

• Cove Creek Bridge
• Magnet Cove Area
• Betts Rhodonite Mine

Tourmaline

Colorful gemstone found in pegmatites. Tourmaline occurs in every color of the rainbow. Maine, California, and North Carolina are top US sources for gem-quality specimens.

Also found at:

• Horseshoe Mine
• Millsite Tin Mine
• Himalaya Mine

Molybdenite

Also found at:

• Sneech Pond Copper Mines (Copper Mine Hill)

Rhodochrosite

Pink manganese carbonate mineral. Colorado's Sweet Home Mine and Red Cloud Mine produce world-famous rhodochrosite crystal specimens.

Also found at:

• Red Cloud Mine

Beavertail State Park Minerals

Jamestown, Rhode Island · State Park

Rocky shoreline for quartz veins and unusual metamorphic rock formations. Beavertail's geology is some of the oldest in the region.

Bonnet Shore Beach

Narragansett, Rhode Island · Public Beach

Pegmatite outcrops along the Bonnet Shores coast carrying beryl and quartz in coarse granitic pods — rare gem-family minerals in place on a public RI ...

Cumberlandite Beds

Cumberland, Rhode Island · Public Land

The only location in the world for cumberlandite (Rhode Island's state rock). A rare iron-rich igneous rock found only in a small area of RI.

Diamond Hill Quartz

Cumberland, Rhode Island · Public Land

Massive white quartz outcrop at Diamond Hill Town Park in Cumberland, featuring a 350-foot vertical face on 'The Big Hill.' Historically Rhode Island'...

Jamestown Bridge Area

Jamestown, Rhode Island · Public Land

Metamorphic rocks exposed near the Jamestown bridge landing on Conanicut Island, a well-documented mineral locality known for staurolite (cross-shaped...

Moosup River

Coventry, Rhode Island · Public Land

River gravels and exposures along the Moosup River, which flows through the Moosup Valley area underlain by Moosup Valley gabbro, Northbridge and Putn...