Chris Tucker Minerals
Specializing in minerals from Montana

Charter Oak Mine, Blue Wing District, Beaverhead County, Montana

The Charter Oak exploited two narrow pipe-like replacement bodies localized alongside a north trending fault.  The ore occurred in Mississippian Madison limestone which has been thrust over Tertiary andesite.  The mine is credited with meager production but has produced a number of secondary minerals including wulfenite, mimetite, pyromorphite, hemimorphite, cerussite, descloizite, and a few others.

The dumps of the Charter Oak.

The dumps to the main adit.

Another view of the dumps.

The heavily gated adit of the Charter Oak.

A typical view of the underground workings.

Another view of the underground workings.  Note the abundant stulls supporting the heavily lagged back.

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