Browse mineral resources

Inverness

Occurrence • Tungsten

Marin

Occurrence • Stone

Lime Point

Occurrence • Gemstone

Hotaling

Occurrence • Stone

Remillard Brick Co.

Occurrence • Clay

Sausalito Point

Producer • Manganese

Tiburon Ridge Flagstone

Occurrence • Stone, Stone, Dimension

Forbes Quarry

Occurrence • Stone, Crushed/Broken

Black Point

Occurrence • Sand and Gravel, Construction, Stone, Crushed/Broken

Pike Gulch

Occurrence •

Mckinnan Gulch

Occurrence •

Mt. Tamalpais

Occurrence • Silver

Maillard Ranch

Occurrence •

Unknown

Occurrence • Stone, Crushed/Broken

Massa Hill

Occurrence • Gemstone

Mazza Mazza Ranch

Prospect •

Petaluma - Pt. Reyes

Occurrence •

Negro Hill

Occurrence • Stone

Union Gulch

Past Producer • Copper

Unknown

Occurrence • Stone

Black Mountain

Occurrence • Stone, Crushed/Broken

Unknown

Occurrence • Stone

Quarry

Occurrence • Stone, Crushed/Broken

Bender Dell Bender

Occurrence • Tungsten

Unknown

Occurrence • Stone, Crushed/Broken

Unknown

Occurrence • Stone, Crushed/Broken, Limestone, General

Edwards

Producer • Mercury

Gambonini

Producer • Mercury

Fort Baker

Occurrence • Gold, Manganese

Inverness Ridge

Occurrence • Gold

Mcnear Point Quarry

Occurrence • Stone, Crushed/Broken

Claims

Occurrence • Mercury

Unknown

Occurrence • Mercury

L P Mcnear Brick Company

Past Producer • Clay

Point Bonita Fort Barry

Occurrence • Stone, Crushed/Broken

Greenbrae Quarry

Occurrence • Stone, Crushed/Broken

Escalle Quarry

Occurrence • Stone, Crushed/Broken

Hoffman

Occurrence • Stone, Crushed/Broken

Unknown

Occurrence • Stone, Crushed/Broken

Claim

Occurrence • Mercury

San Geronimo

Occurrence • Gold

Burdell Mountain

Occurrence • Stone, Crushed/Broken

Claim

Occurrence • Mercury

Randall

Occurrence • Gold, Silver

Noren

Occurrence • Tungsten

Knutte

Producer • Manganese

Massa Hill

Producer • Gemstone

Greenbrae

Producer • Sand and Gravel, Construction

Unnamed Location

Occurrence • Stone, Crushed/Broken

Fort Baker

Occurrence •

Remillard Brick Company

Past Producer • Clay

Massa Hill

Past Producer • Gemstone

Freeman and Sondgroth

Producer • Flagstone

Hotaling

Unknown • Stone, Crushed/Broken

Heato* Flat

Past Producer • Gold

Tiburon Ridge Flagstone

Unknown • Stone, Crushed/Broken

Chileno Valley

Unknown • Mercury

Inverness Ridge

Unknown • Gold

Mcnears Quarry & Mill

Producer • Stone, Crushed/Broken

Marin Co.No.25

Unknown •

Unnamed Location

Occurrence • Mercury

Ghilotti Brothers Quarry

Producer • Stone, Crushed/Broken

Unnamed Location

Occurrence • Stone, Crushed/Broken

Unnamed Location

Past Producer • Sand and Gravel, Construction

Unnamed Location

Unknown • Sand and Gravel, Construction

Claim

Occurrence • Mercury

Borello Quarry

Producer • Stone, Crushed/Broken

Sausalito Point Prospect

Occurrence •

Mckinnan Gulch

Prospect • Copper

Sandpits

Unknown • Sand and Gravel, Construction

San Geronimo

Prospect • Gold

Petaluma Mine

Producer • Mercury

Lafranchi Quarry

Producer • Stone, Crushed/Broken

Unnamed Location

Occurrence • Stone

Tomales Point

Occurrence • Gold

Claims

Occurrence • Mercury

Ft. Baker

Occurrence • Stone, Crushed/Broken

Mount Tamalpais Cemetery Quarry.

Occurrence • Stone, Dimension, Stone, Crushed/Broken

Noren

Unknown • Tungsten

Union Gulch

Unknown • Copper

Unnamed Location

Occurrence • Copper

Maillard Ranch

Occurrence • Manganese

Burdell Mountain

Unknown • Stone, Crushed/Broken

Unnamed Location

Occurrence • Gemstone

Claim

Occurrence • Mercury

Martinoni Quarry

Producer • Stone, Crushed/Broken

Gravel Pit

Prospect • Sand and Gravel, Construction

Hoffman

Past Producer • Stone, Crushed/Broken

Unnamed Location

Occurrence • Manganese

Chileno Valley Stone

Unknown • Stone, Crushed/Broken

Edwards

Prospect • Mercury

Gravel Pit

Prospect • Sand and Gravel, Construction

Quarry

Unknown • Stone, Crushed/Broken

Unnamed Location

Occurrence • Stone

Unnamed Location

Occurrence • Gemstone

Black Point

Past Producer • Stone, Crushed/Broken

Unnamed Location

Occurrence • Stone, Crushed/Broken

Knutte Deposit

Unknown •

Mazza Prospect

Prospect •

Unnamed Location

Occurrence • Gemstone

Tomales Point

Unknown • Gold

Escalle Quarry

Unknown • Stone

Unnamed Quarry

Past Producer • Limestone, General

Dillon Beach Pit

Producer • Sand and Gravel, Construction

Mount Tamalpais Cemetery Quarry

Unknown • Stone, Dimension

Forbes Quarry

Unknown • Stone

Quarrys

Prospect • Sand and Gravel, Construction

Mt Tamalpais

Occurrence • Silver

Claims

Unknown • Mercury

L P Mcnear Brick Co

Producer • Clay

Sulsan Bay Dredge

Producer • Sand and Gravel, Construction

Unnamed Location

Unknown • Stone, Crushed/Broken

San Rafael Quarry

Producer • Stone

Martinelli Ranch Quarry

Producer • Stone, Crushed/Broken

Randall

Unknown • Silver

Gravel Pit

Prospect • Sand and Gravel, Construction

Point Bonita

Prospect • Stone, Crushed/Broken

Unnamed Location

Unknown • Stone, Crushed/Broken

Unnamed Location

Occurrence • Mercury

Pike Gulch

Prospect • Copper

Sandpits

Unknown • Sand and Gravel, Construction

Maillard Ranch

Occurrence • Chromium

Bender

Occurrence • Tungsten

Ft Baker

Unknown • Stone

Gambonini

Past Producer • Mercury

Unnamed Location

Occurrence • Stone

Unnamed Quarry

Past Producer • Stone, Crushed/Broken

Angel Island Dredge

Producer • Sand and Gravel, Construction

Black Mountain

Occurrence • Stone

Patent Brick Company

Past Producer • Clay

Gravel Pit

Unknown • Sand and Gravel, Construction