Silica Mines in California
173Total Sites
25Active
Silica Mining in California
California has 173 silica-related mine and mineral deposit locations recorded in federal databases. Of these, 25 are currently active operations. Data comes from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records.
The earliest recorded silica mine in California is Lakeview Quartzite Deposit in Inyo County, with records dating to 1955.
By County
Silica Mines
| Mine | County | Type | Status |
|---|---|---|---|
| Antioch | Contra Costa | Producer | |
| Byron Pit | Contra Costa | Surface | Producer |
| Byron Plant | Contra Costa | Producer | |
| Cowell Silver Sand Co., Laws | Contra Costa | Producer | |
| Crystal Peak | Sierra | Producer | |
| Crystal Peak | Sierra | Surface-Underground | Producer |
| Crystal Silica Company | San Diego | Producer | |
| Davis and Son | Los Angeles | Producer | |
| Ione Sand Pit | Amador | Surface | Producer |
| Kennedy | San Bernardino | Producer | |
| Mission Viejo Sand Pit | Orange | Surface | Producer |
| Mission Viejo Sand Plant | Orange | Surface | Producer |
| P.j. Weisel, Industrial Sand | Riverside | Producer | |
| Pacific Clay Products | Calaveras | Producer | |
| Pacific Silica Greenhorn Plant | Nevada | Processing Plant | Producer |
| Parker Mill Site | San Bernardino | Processing Plant | Producer |
| Pittsburg Sand Company | Contra Costa | Producer | |
| Roberts Sand Company Black Diamond | Contra Costa | Producer | |
| Salyer Pit & Mill | Humboldt | Surface | Producer |
| Silico Pit | Contra Costa | Surface | Producer |
| Smith Sand Pit | Riverside | Surface | Producer |
| Temescal Canyon Silica Deposit | Riverside | Producer | |
| Western Silica Co Clayton, Muroc | Los Angeles | Producer | |
| You Bet White Mill | Placer | Processing Plant | Producer |
| Yuba Silica | Yuba | Surface | Producer |
| Antioch | Contra Costa | Surface | Past Producer |
| Antioch-Marchio | Contra Costa | Surface | Prospect |
| Atlas Fire Brick Co. Ganister | San Bernardino | Underground | Past Producer |
| Atlas Silica Quarry | San Bernardino | Surface | Past Producer |
| Brandon | El Dorado | Occurrence | |
| Brandon | El Dorado | Occurrence | |
| Brown Silica Deposit | Riverside | Occurrence | |
| Brown Silica Deposit | Riverside | Surface | Past Producer |
| Caswell & Co. | Los Angeles | Surface | Past Producer |
| Chalk Cliff Prospect | Kern | Occurrence | |
| Clark Lake Deposits | San Diego | Occurrence | |
| Coon Hollow | El Dorado | Occurrence | |
| Coon Hollow | El Dorado | Surface | Unknown |
| Corona Mine | Riverside | Surface | Past Producer |
| Coronita Ranch Sand Deposit | Riverside | Prospect | |
| Coyote Mountain Silica Deposit | Imperial | Surface | Past Producer |
| Coyote Mountains | Imperial | Past Producer | |
| Crystal Silica Company | San Diego | Surface | Past Producer |
| Custer Grog Pit | Amador | Occurrence | |
| Cuyamaca | San Diego | Surface | Occurrence |
| Davenport Deposit | Placer | Occurrence | |
| Davis and Son Mine | Los Angeles | Surface | Past Producer |
| Del Monte Prop. Co-Fan Shell Beach | Monterey | Surface | Past Producer |
| Dublin Hills Quartzite | Inyo | Past Producer | |
| Echandi | Calaveras | Occurrence |