Mines in Napa County, California

Napa County, California has 330 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 40 of these are currently active mining operations. The most commonly recorded commodity is chromium, with 96 sites. The table below lists all recorded mines in the county with links to individual site details.

All Mines in Napa County

Mine	Commodity	Type	Status	Source
Napa Quarry	Sand, Industrial NEC	Surface	Active	MSHA
Antone Nichelini	Chromium		Producer	MRDS
Basalt Rock Co	Diatomite		Producer	MRDS
Basalt Rock Co	Clay	Processing Plant	Producer	MRDS
Basalt Rock Co	Stone, Dimension	Surface	Producer	MRDS
Basalt Rock Co	Clay	Surface	Producer	MRDS
Basalt Rock Co. Quarry, Possibly	Diatomite		Producer	MRDS
Calistoga	Silver, Gold		Producer	MRDS
Corona	Mercury		Producer	MRDS
Harold Smith & Sons Construction	Sand and Gravel, Construction	Surface	Producer	MRDS
James Creck Placer	Mercury		Producer	MRDS
Juarez Quarry	Stone, Dimension	Surface	Producer	MRDS
Manhattan	Mercury		Producer	MRDS
Manhattan Mine	Mercury		Producer	MRDS
Moore Creek Manganese Ridge Prospect	Manganese		Producer	MRDS
Mt George Pumice Deposit	Pumice		Producer	MRDS
Napa Evaporators	Salt	Surface	Producer	MRDS
Napa Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Napa Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Napa River Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Napa Valley Stone	Stone, Crushed/Broken	Surface	Producer	MRDS
Oakville	Mercury		Producer	MRDS
Palisade Mine Grigsby	Silver, Gold		Producer	MRDS
Pope Creek Pits	Sand and Gravel, Construction	Surface	Producer	MRDS
Ray's Base Plant	Sand and Gravel, Construction	Surface	Producer	MRDS
Ray's Rock Sand and Gravel Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Roderick Sand and Gravel Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Silva Pumice Quarry	Pumice	Surface	Producer	MRDS
Silverado Mine Calistoga Mount St. Helena	Silver, Gold		Producer	MRDS
Sulfur Creek Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Toyon Mine	Mercury		Producer	MRDS
Unnamed Location	Magnesite		Producer	MRDS
Unnamed Location	Chromium		Producer	MRDS
Unnamed Location	Chromium		Producer	MRDS
Unnamed Location	Chromium		Producer	MRDS
Unnamed Location	Sand and Gravel, Construction	Surface	Producer	MRDS
Unnamed Quarry	Sand and Gravel, Construction	Surface	Producer	MRDS
Unnamed Quarry	Sand and Gravel, Construction	Surface	Producer	MRDS
Walker Pumice Quarry	Pumice	Surface	Producer	MRDS
White Rock Mine Pope Valley, Walters	Magnesite		Producer	MRDS
Adams and Westendorf			Occurrence	MRDS
Adams and Westendorf Claims			Occurrence	MRDS
Aetna	Mercury		Past Producer	MRDS
Aetna Extension	Mercury		Occurrence	MRDS
Aetna Springs	Geothermal	Well	Unknown	MRDS
Astute Mine	Chromium		Occurrence	MRDS
Astute Mine	Chromium		Prospect	MRDS
Bacon and Kenney Prospect			Prospect	MRDS
Bacon and Kenney Prospect	Manganese		Prospect	MRDS
Basalt Rock Co.	Diatomite		Occurrence	MRDS
Basalt Rock Company, Inc.	Stone, Crushed/Broken		Occurrence	MRDS
Bella Oak	Mercury		Past Producer	MRDS
Berthenia Mine	Magnesite		Occurrence	MRDS
Berthenia Mine	Magnesite	Surface-Underground	Occurrence	MRDS
Black Hawk Claim	Chromium		Occurrence	MRDS
Black Hawk Claim	Chromium	Surface-Underground	Past Producer	MRDS
Blue Jay	Chromium	Surface-Underground	Occurrence	MRDS
Blue Monday Claim			Occurrence	MRDS
Blue Monday Searchlight, Surprise			Occurrence	MRDS
Blue Rock	Construction Sand and Gravel	Surface	Abandoned	MSHA
Buzzard	Chromium	Surface	Prospect	MRDS
Buzzard No 2	Chromium	Surface	Prospect	MRDS
Calistoga	Geothermal	Well	Unknown	MRDS
Calistoga Hot Springs			Occurrence	MRDS
Calistoga Hot Springs	Mercury		Unknown	MRDS
Cavagnaro Prospect			Occurrence	MRDS
Cavagnaro Prospect			Occurrence	MRDS
Cedar Rough	Chromium	Surface-Underground	Prospect	MRDS
Chrome Center Claim	Chromium		Occurrence	MRDS
Chrome Center Claim	Chromium	Surface-Underground	Past Producer	MRDS
Cicero Pumice Quarry	Pumice		Occurrence	MRDS
Cicero Pumice Quarry	Pumice	Surface-Underground	Prospect	MRDS
Cigarette Mine	Chromium		Occurrence	MRDS
Cigarette Mine	Chromium	Surface-Underground	Prospect	MRDS
Clark and March Kaolin Mine	Clay		Prospect	MRDS
Clark and Marsh Kaolin	Clay		Occurrence	MRDS
Clark and Marsh Kaolin Mine	Clay		Prospect	MRDS
Clark and Marsh Kaolin Mine	Clay	Surface-Underground	Prospect	MRDS
Conn Valley	Manganese		Occurrence	MRDS
Conn Valley Prospect			Occurrence	MRDS
Corona Mine	Mercury	Surface-Underground	Past Producer	MRDS
Crystal Creek Claim	Chromium		Occurrence	MRDS
Crystal Creek Claim	Chromium	Underground	Past Producer	MRDS
Diatomite Occurrence	Diatomite		Past Producer	MRDS
Dollerhyde Claim	Chromium		Occurrence	MRDS
Dollerhyde Claim	Chromium	Surface-Underground	Prospect	MRDS
Dottie D	Chromium	Surface-Underground	Prospect	MRDS
Eagle	Chromium	Surface-Underground	Prospect	MRDS
Elder	Magnesite	Surface-Underground	Past Producer	MRDS
Elder Claim	Chromium		Occurrence	MRDS
Elder Claim	Chromium	Surface-Underground	Past Producer	MRDS
Elder Mine Matthai, Cleveland	Magnesite		Occurrence	MRDS
Enterprise Engineering	Mercury		Occurrence	MRDS
Enterprise Engineering Company - Pope Creek Placers	Mercury		Occurrence	MRDS
Ferris Claim	Chromium		Occurrence	MRDS
Ferris Claim	Chromium	Surface	Past Producer	MRDS
Fourth of July Claim	Chromium		Occurrence	MRDS
Fourth of July Claim	Chromium	Surface-Underground	Past Producer	MRDS
Glad I Found You No. 2 Claim	Chromium		Occurrence	MRDS
Glad I Found You No. 2 Claim	Chromium		Occurrence	MRDS
Glass Mountain Deposit	Stone		Occurrence	MRDS
Glass Mountain Deposit	Stone, Crushed/Broken	Surface-Underground	Prospect	MRDS
Granada	Mercury		Past Producer	MRDS
Granada Mine	Mercury	Surface-Underground	Prospect	MRDS
Graves Mine	Chromium		Occurrence	MRDS
Graves Mine	Chromium	Surface-Underground	Past Producer	MRDS
Graves Ranch Deposit	Chromium		Occurrence	MRDS
Graves Ranch Deposit	Chromium	Offshore	Past Producer	MRDS
Grey Claim	Chromium		Past Producer	MRDS
Grey Claim	Chromium	Surface-Underground	Past Producer	MRDS
Hampton	Chromium	Surface-Underground	Prospect	MRDS
Hastings Deposit			Occurrence	MRDS
Hastings Prospect			Occurrence	MRDS
Hightower Claim	Chromium		Occurrence	MRDS
Hightower Claim	Chromium	Surface-Underground	Past Producer	MRDS
Honolulu Lady Claim	Chromium	Surface-Underground	Prospect	MRDS
Ivanhoe	Mercury		Past Producer	MRDS
Ivanhoe Mine	Mercury	Placer	Past Producer	MRDS
Jacksons Springs	Geothermal	Well	Unknown	MRDS
Juarez Quarry	Stone, Crushed/Broken		Occurrence	MRDS
Juniper Group			Occurrence	MRDS
Juniper Group	Copper		Occurrence	MRDS
Kellett	Mercury		Past Producer	MRDS
Kellett Mine	Mercury	Surface-Underground	Prospect	MRDS
Knoxville	Chromium		Occurrence	MRDS
Knoxville Mine	Antimony		Occurrence	MRDS
Knoxville Mine	Mercury	Surface-Underground	Past Producer	MRDS
La Joya	Mercury		Past Producer	MRDS
Lajoya Mine	Mercury	Underground	Prospect	MRDS
Lewis			Occurrence	MRDS
Lewis	Manganese	Surface-Underground	Occurrence	MRDS
Liberty			Occurrence	MRDS
Liberty Claim			Occurrence	MRDS
Linnie P	Chromium	Surface-Underground	Prospect	MRDS
Lombardi			Occurrence	MRDS
Lost Horse	Chromium	Surface-Underground	Prospect	MRDS
Maltby No 2 Mine	Magnesite	Surface-Underground	Past Producer	MRDS
Maltby No. 2 Mine Blanco and Snowflake	Magnesite		Occurrence	MRDS
Manhatten Mine	Mercury	Surface-Underground	Past Producer	MRDS
Mc Laughlin Mine	Gold	Surface	Plant	MRDS
McGill Rock and Sand	Sand and Gravel, Construction		Occurrence	MRDS
Meadow	Chromium		Prospect	MRDS
Mistake	Chromium	Surface-Underground	Prospect	MRDS
Monticello Asbestos Mine	Asbestos	Underground	Past Producer	MRDS
Moore Creek Prospect		Surface-Underground	Past Producer	MRDS
Moore Mine	Chromium		Past Producer	MRDS
Moore Mine		Surface	Prospect	MRDS
Mount George King	Pumice		Occurrence	MRDS
Mount George King Pumice Deposit.	Pumice		Occurrence	MRDS
Mountain	Mercury		Occurrence	MRDS
Mt George Pumice Deposit	Pumice	Surface	Prospect	MRDS
Mullaly Mine	Chromium		Occurrence	MRDS
Napa Copper			Occurrence	MRDS
Napa Copper Claim	Copper	Surface-Underground	Past Producer	MRDS
Napa Junction Plant	Stone	Processing Plant	Unknown	MRDS
Napa Rock Soda Springs	Geothermal	Well	Unknown	MRDS
Napa Shop	Crushed, Broken Stone NEC	Facility	Abandoned	MSHA
Nevada Claim	Chromium		Occurrence	MRDS
Nevada Claim	Chromium	Surface-Underground	Occurrence	MRDS
Nichelini			Occurrence	MRDS
Nichelini Mine		Surface-Underground	Past Producer	MRDS
Northern Light			Occurrence	MRDS
Oat Hill Extension Mine	Mercury		Past Producer	MRDS
Oat Hill Mine	Mercury		Past Producer	MRDS
Oat Hill Mine (Facility)	Mercury	Surface	Plant	MRDS
One-Shot Mining Co.	Geothermal	Well	Unknown	MRDS
Palisade	Silver, Gold		Past Producer	MRDS
Palisade Mine	Silver	Surface-Underground	Past Producer	MRDS
Paul Lombardi	Manganese		Occurrence	MRDS
Philadelphia			Occurrence	MRDS
Philadelphia	Mercury	Underground	Occurrence	MRDS
Philladelphia	Mercury		Occurrence	MRDS
Phoenix Kohler And	Asbestos		Occurrence	MRDS
Phoenix Kohler and Chase Asbestos Quarry	Asbestos		Occurrence	MRDS
Plymouth Mine	Mercury		Unknown	MRDS
Pope Creek Placers	Mercury		Past Producer	MRDS
Powers			Prospect	MRDS
Powers Mine		Surface	Prospect	MRDS
Priest Mine	Magnesite		Occurrence	MRDS
Priest Mine	Magnesite	Surface-Underground	Prospect	MRDS
Prospect Pit	Mercury		Occurrence	MRDS
Prospect Pit	Mercury		Occurrence	MRDS
Pumice Deposit	Pumice		Occurrence	MRDS
Pumice Deposit	Pumice	Underground	Prospect	MRDS
R H Travis and Associates	Mercury		Occurrence	MRDS
Reave Claims Three Claims	Chromium		Occurrence	MRDS
Reeve Claims	Chromium		Prospect	MRDS
Rice & Jacobson	Manganese	Well	Occurrence	MRDS
Ries and Jacobsen			Occurrence	MRDS
Ries and Jacobsen Prospect		Surface	Prospect	MRDS
Roderick Sand and Gravel Pit	Sand and Gravel, Construction		Occurrence	MRDS
Russel Deposit	Magnesite	Surface	Unknown	MRDS
Russell Deposit	Magnesite		Occurrence	MRDS
S. Lenz and Son Basalt Quarry and Plant.	Stone		Occurrence	MRDS
S. Lnz. and Sn Bslt Qrry and Plnt	Stone	Surface-Underground	Prospect	MRDS
Samuel Springs Claims	Chromium		Occurrence	MRDS
Samuel Springs Claims	Chromium		Occurrence	MRDS
Samuel Springs Claims	Chromium		Occurrence	MRDS
Samuel Springs Claims	Chromium		Occurrence	MRDS
Samuel Springs Claims	Chromium		Occurrence	MRDS
Scott Ranch	Mercury		Occurrence	MRDS
Scott Ranch Property	Mercury		Occurrence	MRDS
Search Group			Occurrence	MRDS
Search Group	Copper	Underground	Prospect	MRDS
Silva Pumice Quarry	Pumice		Occurrence	MRDS
Silverado Mine	Silver	Surface-Underground	Past Producer	MRDS
Silverado-Palisade Deposit	Gold, Silver	Surface-Underground	Past Producer	MRDS
Smith Gravel Pit	Sand and Gravel, Construction		Occurrence	MRDS
Smith Gravel Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Stirling	Iron		Occurrence	MRDS
Stirling	Iron		Unknown	MRDS
Sullinger Claim	Chromium		Occurrence	MRDS
Sullinger Claim	Chromium	Surface	Prospect	MRDS
Summit			Occurrence	MRDS
Summit Mine	Mercury		Prospect	MRDS
Tarry Claim	Chromium		Occurrence	MRDS
Tarry Claim	Chromium	Surface-Underground	Past Producer	MRDS
Toyon Mine	Mercury	Surface-Underground	Prospect	MRDS
Turner Mine	Chromium		Occurrence	MRDS
Turner Mine	Chromium	Surface-Underground	Past Producer	MRDS
Twin Peaks	Mercury		Past Producer	MRDS
Twin Peaks Mine	Mercury		Occurrence	MRDS
Twin Peaks Mine	Mercury	Underground	Past Producer	MRDS
Unknown	Iron		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Stone, Crushed/Broken		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unknown	Magnesite		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unknown	Perlite		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unknown	Chromium		Occurrence	MRDS
Unnamed Chromite	Chromium		Occurrence	MRDS
Unnamed Chromite	Chromium		Prospect	MRDS
Unnamed Location	Sand and Gravel, Construction		Past Producer	MRDS
Unnamed Location	Perlite		Occurrence	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Location	Mercury	Surface-Underground	Prospect	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Mercury		Occurrence	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Mercury		Occurrence	MRDS
Unnamed Location	Mercury		Occurrence	MRDS
Unnamed Location	Mercury		Unknown	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Location	Iron	Surface-Underground	Unknown	MRDS
Unnamed Location	Mercury		Occurrence	MRDS
Unnamed Location	Silver		Unknown	MRDS
Unnamed Location	Mercury		Occurrence	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Flagstone		Occurrence	MRDS
Unnamed Location	Manganese		Occurrence	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Copper		Occurrence	MRDS
Unnamed Location	Manganese		Occurrence	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Limestone, Dimension		Occurrence	MRDS
Unnamed Location	Chromium	Surface	Prospect	MRDS
Unnamed Location	Magnesite	Underground	Prospect	MRDS
Unnamed Location	Mercury		Occurrence	MRDS
Unnamed Location	Limestone, Dimension	Surface-Underground	Occurrence	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Sand and Gravel, Construction	Surface	Unknown	MRDS
Unnamed Location	Mercury		Occurrence	MRDS
Unnamed Location	Mercury	Surface	Occurrence	MRDS
Unnamed Location	Chromium	Surface-Underground	Prospect	MRDS
Unnamed Location	Mercury		Occurrence	MRDS
Unnamed Location	Geothermal		Occurrence	MRDS
Unnamed Location	Chromium	Surface	Prospect	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Location	Manganese		Occurrence	MRDS
Unnamed Location	Gemstone		Occurrence	MRDS
Unnamed Prospect	Chromium		Occurrence	MRDS
Unnamed Prospect	Chromium		Occurrence	MRDS
Unnamed Prospect	Chromium		Occurrence	MRDS
Unnamed Prospect	Chromium		Occurrence	MRDS
Unnamed Prospect	Chromium		Occurrence	MRDS
Unnamed Prospect	Chromium		Occurrence	MRDS
Unnamed Prospect	Chromium	Surface-Underground	Prospect	MRDS
Unnamed Prospect	Chromium	Surface-Underground	Prospect	MRDS
Unnamed Quarries	Limestone, General, Clay		Prospect	MRDS
Unnamed Quarries	Limestone, Dimension	Surface-Underground	Prospect	MRDS
Unnamed Quarry	Sand and Gravel, Construction		Past Producer	MRDS
Unnamed Quarry	Sand and Gravel, Construction		Past Producer	MRDS
Unnamed Quicksilver	Mercury		Occurrence	MRDS
Unnamed Quicksilver	Mercury		Occurrence	MRDS
Unnamed Quicksilver	Mercury		Occurrence	MRDS
Unnamed Quicksilver	Mercury		Occurrence	MRDS
Valley	Mercury		Past Producer	MRDS
Valley	Mercury	Surface-Underground	Prospect	MRDS
Viola	Chromium	Surface-Underground	Prospect	MRDS
Walker Pumice Quarry	Pumice		Occurrence	MRDS
Wallace			Occurrence	MRDS
Wallace Prospect			Occurrence	MRDS
Wallace Prospect	Manganese		Occurrence	MRDS
Walter Springs	Geothermal	Well	Unknown	MRDS
White Angel	Chromium		Occurrence	MRDS
White Angel	Chromium		Occurrence	MRDS
White Rock			Occurrence	MRDS
White Rock	Copper		Occurrence	MRDS
White Rock Mine	Magnesite	Surface-Underground	Past Producer	MRDS
White Rock Mine	Magnesite	Underground	Prospect	MRDS
Whitney	Mercury		Past Producer	MRDS
Whitney Mine	Mercury	Underground	Prospect	MRDS
Williamson Lease	Mercury		Past Producer	MRDS
Williamson Lease	Mercury		Occurrence	MRDS
Wilson Pumice Quarry	Pumice		Occurrence	MRDS
Wilson Pumice Quarry	Pumice		Occurrence	MRDS