Manganese occurrence · Riverside County, California
| State | California |
| County | Riverside |
| Coordinates | 34.02835, -114.51500 |
| Primary | Manganese |
| Tertiary | Copper |
| Status | Occurrence |
| Data Source | USGS MRDS |
| Source ID | 10139682 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Nelson Prospect | 0.0 mi | Gold | Occurrence |
| Undetermined Occurrence | 0.1 mi | Iron | Occurrence |
| Unnamed Prospect near Poston, AZ | 0.1 mi | Gold | Occurrence |
| Unnamed Prospect near Poston, AZ | 0.2 mi | Gold | Occurrence |
| Unnamed Prospect near Poston, AZ | 0.2 mi | Copper | Occurrence |
| Meek and Sass Mines | 0.3 mi | Gold | Occurrence |
| Unnamed Prospect near Poston, AZ | 0.4 mi | Gold | Prospect |
| Unnamed Prospect near Poston, AZ | 0.4 mi | Gold | Prospect |
| Little Girl Prospects | 0.5 mi | Gold | Occurrence |
| Steece Group | 0.5 mi | Gold | Past Producer |
| Riverside Mts. Manganese Deposit | 0.5 mi | Manganese | Occurrence |
| Margarita Prospects | 0.5 mi | Gold | 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.