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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