Bigger Mica Mine

Past ProducerFeldspar, Mica, BerylliumUSGS MRDS

Location

StateColorado
CountyJefferson
Coordinates39.56471, -105.21502

Commodities

PrimaryFeldspar, Mica, Beryllium
TertiaryUranium, Bismuth, Niobium (Columbium), REE, Tin, Tantalum

Mine Details

StatusPast Producer
First Production1884
Last Production1935
Discovery Year1884
Data SourceUSGS MRDS
Source ID10013744

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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