Calcium, Manganese, Silica past producer · Trinity County, California
discovered 1942
Drawn as an underground mine, reached by a shaft or tunnel and worked along the ore. The ore color stands for calcium, manganese, silica. Federal records note the kind of operation and its status, not its depth or layout, so this is a typical example rather than a survey of this site.
| State | California |
| County | Trinity |
| Coordinates | 40.28565, -123.32971 |
| Tertiary | Calcium, Manganese, Silica |
| Status | Past Producer |
| Type | Underground |
| Discovery Year | 1942 |
| Data Source | USGS MRDS |
| Source ID | 10214705 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Griffiths Mining & Development Co | 0.5 mi | Manganese | Past Producer |
| Apple Flat | 0.6 mi | Manganese | Occurrence |
| Apple Flat Prospect | 0.8 mi | Occurrence | |
| Apple Flat Prospect | 0.8 mi | Prospect | |
| White Oak Prospect | 1.2 mi | Occurrence | |
| Unnamed near Ruth, CA | 1.2 mi | Manganese | Occurrence |
| Eagle P M C | 2.5 mi | Gold | Prospect |
| Wilburns Ranch | 2.9 mi | Unknown | |
| Mary Lue | 3.1 mi | Manganese | Occurrence |
| Mary Lue Claim | 3.2 mi | Occurrence | |
| Black Hawk | 3.7 mi | Occurrence | |
| Black Hawk | 3.7 mi | Manganese | Occurrence |
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.