Chromium site, status unknown · Humboldt County, California
Drawn as a mine worked both from the surface and underground. The ore color stands for chromium. 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 | 40.44904, -123.57942 |
| Primary | Chromium |
| Status | Unknown |
| Type | Surface-Underground |
| Data Source | USGS MRDS |
| Source ID | 10115472 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Unknown near Mad River, CA | 0.1 mi | Chromium | Occurrence |
| Dinsmore Pit | 2.2 mi | Sand and Gravel, Construction | Producer |
| Unnamed Location near Mad River, CA | 3.0 mi | Chromium | Prospect |
| Unnamed Location near Mad River, CA | 3.0 mi | Chromium | Producer |
| Unknown near Mad River, CA | 3.2 mi | Chromium | Occurrence |
| Blocksburg | 3.2 mi | Sand and Gravel, Construction | Producer |
| Martin and Murphy Claim | 4.7 mi | Occurrence | |
| Burns Prospect | 5.3 mi | Occurrence | |
| Unnamed Location near Mad River, CA | 5.4 mi | Manganese | Prospect |
| Unnamed Location near Mad River, CA | 5.7 mi | Occurrence | |
| Martin and Murphy Claim | 5.7 mi | Occurrence | |
| Copper Queen Group | 6.4 mi | Copper | Prospect |