Boron-Borates past producer · San Bernardino County, California
| State | California |
| County | San Bernardino |
| Coordinates | 34.91671, -116.91757 |
| Primary | Boron-Borates |
| Secondary | Strontium |
| Status | Past Producer |
| Deposit Type | SEDIMENTARY-LACUSTRINE |
| First Production | 1888 |
| Last Production | 1924 |
| Discovery Year | 1882 |
| Data Source | USGS MRDS |
| Source ID | 60001094 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Calico Rock Milling's Beige Rock Qu | 0.8 mi | Volcanic Materials | Past Producer |
| Daggett/yermo Site | 0.8 mi | Limestone, General | Occurrence |
| Brubaker Beige Rock Quarry | 1.0 mi | Volcanic Materials | Producer |
| Lead Mountain | 1.0 mi | Barium-Barite | Past Producer |
| Lead Mountain | 1.0 mi | Barium-Barite | Occurrence |
| Unnamed Prospect near Yermo, CA | 1.1 mi | Stone, Crushed/Broken | Occurrence |
| Unnamed Silver-Barite Occurrence near Yermo, CA | 1.1 mi | Silver | Occurrence |
| Unnamed Adit near Yermo, CA | 1.1 mi | Clay | Prospect |
| Unnamed Shaft near Yermo, CA | 1.1 mi | Silver | Prospect |
| Unnamed Shaft near Yermo, CA | 1.2 mi | Barium-Barite | Prospect |
| American Borax Co. | 1.2 mi | Boron-Borates | Past Producer |
| Brubaker Bentonite Mine | 1.3 mi | Bentonite | Producer |
This mine is a past producer — it was once operational but is no longer actively mining. Past producer sites may still have environmental impacts including disturbed land, tailings piles, and potential water quality effects. Some past producer sites have been reclaimed, while others remain as-is. Check with your state mining or environmental agency for current site conditions.