Sulfur, Mercury past producer · Lake County, California
| State | California |
| County | Lake |
| Coordinates | 39.00389, -122.66472 |
| Primary | Sulfur, Mercury |
| Status | Past Producer |
| Type | Surface-Underground |
| First Production | 1873 |
| Discovery Year | 1865 |
| Data Source | USGS MRDS |
| Source ID | 10040771 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Clear Lake-Sulphur Bank | 0.3 mi | Mercury | Producer |
| Big Borax Lake | 1.0 mi | Stone | Occurrence |
| Red Lava Products Quarry | 1.1 mi | Pumice | Producer |
| Clearlake Lava Pit and Mill | 1.6 mi | Pumice | Producer |
| Hidden Valley Sand & Gravel | 1.6 mi | Construction Sand and Gravel | Abandoned |
| Gravel Pits | 1.6 mi | Sand and Gravel, Construction | Unknown |
| Unnamed Location near Clearlake, CA | 1.8 mi | Chromium | Occurrence |
| Clear Lake Quarry | 1.9 mi | Pumice | Producer |
| Coleman Pumice | 1.9 mi | Pumice | Unknown |
| Christianson Tract | 2.0 mi | Occurrence | |
| Unknown near Clearlake, CA | 2.1 mi | Chromium | Occurrence |
| Christienson Tract | 2.1 mi | Copper | Unknown |
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.