Silica, Calcium, Manganese past producer · Trinity County, California
discovered 1937 · first production 1942
Drawn as an open-pit mine, dug down in benches from the surface. The ore color stands for silica, calcium, 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 | 40.41955, -123.17551 |
| Tertiary | Silica, Calcium, Manganese |
| Status | Past Producer |
| Type | Surface |
| First Production | 1942 |
| Discovery Year | 1937 |
| Data Source | USGS MRDS |
| Source ID | 10214163 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Manganese Queen Mine | 0.2 mi | Manganese | Producer |
| Foster and Cuff | 0.6 mi | Past Producer | |
| Foster and Cuff | 0.6 mi | Chromium | Past Producer |
| Blondy | 1.3 mi | Occurrence | |
| Blondy Occurrence | 1.3 mi | Chromium | Occurrence |
| Brown Bear | 1.8 mi | Chromium | Occurrence |
| Brown Bear | 1.8 mi | Chromium | Occurrence |
| Salt Creek No2 and No3 Claims | 1.9 mi | Chromium | Unknown |
| Salt Creek No. 2 and No. 3 Claims | 1.9 mi | Occurrence | |
| Dry Lake Prospect | 2.0 mi | Occurrence | |
| Pewee Claim | 2.1 mi | Chromium | Occurrence |
| Peewee Prospect | 2.1 mi | Chromium | 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.