Castle Island Mine

Past ProducerBarium-BariteOffshoreUSGS MRDS

Location

StateAlaska
Coordinates56.65394, -133.16438

Commodities

PrimaryBarium-Barite
TertiaryCopper, Gold, Silver, Zinc

Mine Details

StatusPast Producer
TypeOffshore
First Production1966
Discovery Year1913
Data SourceUSGS MRDS
Source ID10258759

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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