Keystone Mine

Past ProducerSilver, Copper, Lead, GoldUSGS MRDS

Location

StateArizona
CountyMohave
Coordinates35.37641, -114.15274

Commodities

PrimarySilver, Copper, Lead, Gold
SecondaryZinc
TertiaryMolybdenum, Arsenic

Mine Details

StatusPast Producer
Deposit TypeVein
Last Production1940
Discovery Year1870
Data SourceUSGS MRDS
Source ID10027835

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.

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