Manganese prospect · Humboldt County, California
discovered 1942
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 | Humboldt |
| Coordinates | 40.25485, -123.57082 |
| Tertiary | Manganese |
| Status | Prospect |
| Type | Surface |
| Discovery Year | 1942 |
| Data Source | USGS MRDS |
| Source ID | 10260545 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Prior No.1 | 0.0 mi | Manganese | Occurrence |
| Black Oak Mine | 2.7 mi | Manganese | Producer |
| Murphy Prospect | 2.7 mi | Occurrence | |
| Black Oak Mine | 2.9 mi | Past Producer | |
| Murphy Prospect | 3.0 mi | Manganese | Occurrence |
| Ware Deposit No. 2 | 3.8 mi | Occurrence | |
| Stockton | 3.9 mi | Past Producer | |
| Ware Deposits Nos.1 and 2 | 3.9 mi | Prospect | |
| Ware Deposit No. 1 | 4.2 mi | Occurrence | |
| Big Boy | 4.4 mi | Occurrence | |
| Satterly Bar | 4.5 mi | Sand and Gravel, Construction | Producer |
| Big Boy Deposit | 4.5 mi | Occurrence |
This location is classified as a mineral prospect or occurrence — a site where minerals have been identified but no significant mining has taken place. These sites typically have minimal environmental impact but indicate the presence of mineral deposits in the area.