Keystone Mine

Past ProducerGold, Silver, Zinc, CopperUndergroundUSGS MRDS

Location

StateCalifornia
CountyShasta
Coordinates40.72095, -122.51500

Commodities

PrimaryGold, Silver, Zinc, Copper
TertiarySulfur-Pyrite

Mine Details

StatusPast Producer
TypeUnderground
First Production1923
Discovery Year1900
Data SourceUSGS MRDS
Source ID10214011

What This Means

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.

Other Mines in Shasta County

View all mines in Shasta County →

Other Gold, Silver, Zinc, Copper Mines in California

All gold, silver, zinc, copper mines in California →