Holyoke Silver Mine

ProspectSilverUndergroundUSGS MRDS

Location

StateMichigan
CountyMarquette
Coordinates46.58778, -87.63780

Commodities

PrimarySilver
SecondaryGold
TertiaryCadmium

Mine Details

StatusProspect
TypeUnderground
First Production1864
Last Production1868
Data SourceUSGS MRDS
Source ID10310184

What This Means

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.

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