Manganese past producer · Trinity County, California
discovered 1960
Drawn as an open-pit mine, dug down in benches from the surface. The ore color stands for manganese. 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 | 40.21455, -123.51802 |
| Tertiary | Manganese |
| Status | Past Producer |
| Type | Surface |
| Discovery Year | 1960 |
| Data Source | USGS MRDS |
| Source ID | 10190625 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Ware Deposits Nos.1 and 2 | 0.0 mi | Prospect | |
| Ware Deposit No. 2 | 0.2 mi | Occurrence | |
| Stockton Deposits | 1.0 mi | Occurrence | |
| Big Boy | 1.2 mi | Occurrence | |
| Briggs Deposits | 1.2 mi | Occurrence | |
| Murphy Prospect | 1.3 mi | Manganese | Occurrence |
| Briggs | 1.3 mi | Manganese | Occurrence |
| Big Boy Deposit | 1.4 mi | Occurrence | |
| Black Oak Mine | 1.4 mi | Past Producer | |
| Black Oak Mine | 1.5 mi | Manganese | Producer |
| Broken Hammer Prospect | 1.5 mi | Occurrence | |
| Ware Deposit No. 1 | 1.6 mi | 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.