Bentonite Mines in California
98Total Sites
7Active
Bentonite Mining in California
California has 98 bentonite-related mine and mineral deposit locations recorded in federal databases. Of these, 7 are currently active operations. Data comes from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records.
By County
| County | Sites |
|---|---|
| San Bernardino County | 61 |
| Kern County | 15 |
| Inyo County | 8 |
| San Benito County | 4 |
| Imperial County | 3 |
| San Diego County | 2 |
| Santa Barbara County | 2 |
| Colusa County | 1 |
| Fresno County | 1 |
| Ventura County | 1 |
Bentonite Mines
| Mine | County | Type | Status |
|---|---|---|---|
| Ashurst-Lewis Pit | San Benito | Surface | Producer |
| Brubaker Bentonite Mine | San Bernardino | Surface | Producer |
| Centennial Flat Clay Mine | Inyo | Surface | Producer |
| Good Neighbor #1 Mine | San Bernardino | Surface | Producer |
| Newberry Hectorite Mine | San Bernardino | Producer | |
| Vallecitos Clay Mine | San Benito | Surface | Producer |
| Vermillion Canyon Pits | Inyo | Surface | Producer |
| Aetna Group | Kern | Surface | Prospect |
| Antelope Valley Deposit | Colusa | Surface | Occurrence |
| Ashurst Ranch Pit | Fresno | Surface | Past Producer |
| Barber Bentonite | San Bernardino | Surface | Prospect |
| Barber Bentonite Mine | San Bernardino | Past Producer | |
| Barrett | San Bernardino | Surface | Past Producer |
| Barstow Bentonite Mine | San Bernardino | Past Producer | |
| Bentonite Mine | San Bernardino | Past Producer | |
| Bentonite Mine | San Bernardino | Surface-Underground | Past Producer |
| Bentonite Placer Prospect | Inyo | Surface | Prospect |
| Bentonite Prospect | San Bernardino | Occurrence | |
| Bentonite Prospect | Santa Barbara | Occurrence | |
| Bitter Spring Clay Prospect | San Bernardino | Occurrence | |
| Bomber Moon Clay Prospect | San Bernardino | Occurrence | |
| Bomber Moon Mine | San Bernardino | Underground | Past Producer |
| C. and M. Deposit | San Bernardino | Surface | Past Producer |
| Cal-Min-Co Deposit | Imperial | Underground | Past Producer |
| California Talc Clay Pit | San Bernardino | Occurrence | |
| Clay Deposit | Ventura | Surface | Prospect |
| Cronese Mud Mine | San Bernardino | Occurrence | |
| Death Valley-Tecopa | Inyo | Surface | Unknown |
| Duran Deposit | Kern | Surface | Prospect |
| El Centro | Imperial | Surface | Past Producer |
| Filtrol Bentonite Deposit | Kern | Past Producer | |
| Grotto & Lone Adit Bentonite | San Bernardino | Surface | Occurrence |
| Grottoes Clay Prospect | San Bernardino | Occurrence | |
| Gunn Mine | San Bernardino | Past Producer | |
| Hector Bentonite Deposit | San Bernardino | Surface | Past Producer |
| Hector Bentonite Deposit | San Bernardino | Surface | Past Producer |
| Hector Bentonite Deposits | San Bernardino | Surface | Past Producer |
| Hector Tuff Bentonite Prospect | San Bernardino | Occurrence | |
| Hector Tuff Deposit | San Bernardino | Surface | Past Producer |
| Henz Bentonite Deposit | San Bernardino | Prospect | |
| Henz Bentonite Prospect | San Bernardino | Occurrence | |
| Hunger and McPhillips | San Bernardino | Surface-Underground | Past Producer |
| Huntington Tile Clay Deposit | San Bernardino | Surface | Prospect |
| Ibex Bentonite | San Bernardino | Surface | Intermittent |
| Ibex-Bentonite | Inyo | Surface | Past Producer |
| Kingston Wash Mine | San Bernardino | Past Producer | |
| Koehn Deposit | Kern | Underground | Prospect |
| Little Sand Spring Bentonite | Inyo | Occurrence | |
| McKittrick Pit | Kern | Surface | Past Producer |
| Mineola Bentonite/zeolite Deposit | San Bernardino | Surface-Underground | Prospect |
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