Phoenix Fissure

Past ProducerCopper, SilverUndergroundUSGS MRDS

Location

StateMichigan
CountyKeweenaw
Coordinates44.39080, -88.27894

Commodities

TertiaryCopper, Silver

Mine Details

StatusPast Producer
TypeUnderground
First Production1863
Discovery Year1863
Data SourceUSGS MRDS
Source ID10194265

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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