Gold past producer · Riverside County, California
| State | California |
| County | Riverside |
| Coordinates | 34.03425, -114.50660 |
| Primary | Gold |
| Tertiary | Copper |
| Status | Past Producer |
| Type | Underground |
| Data Source | USGS MRDS |
| Source ID | 10139862 |
| Site | Distance | Commodity | Status |
|---|---|---|---|
| Unnamed Prospect near Poston, AZ | 0.1 mi | Gold | Prospect |
| Steece Group | 0.2 mi | Gold | Past Producer |
| Morning Star Deposit | 0.2 mi | Gold | Plant |
| Mountainer Mine | 0.2 mi | Copper | Producer |
| Unnamed Prospect near Poston, AZ | 0.2 mi | Gold | Prospect |
| Unnamed Prospect near Poston, AZ | 0.3 mi | Gold | Prospect |
| Meek and Sass Mines | 0.3 mi | Gold | Occurrence |
| Niagra Prospect | 0.3 mi | Gold | Occurrence |
| Combination Prospect | 0.4 mi | Gold | Occurrence |
| Calzona Mine | 0.4 mi | Gold | Prospect |
| Unnamed Prospect near Poston, AZ | 0.4 mi | Gold | Prospect |
| Unnamed Manganese Claims near Poston, AZ | 0.5 mi | Manganese | 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.