Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by
mindat.org
There are no ages for
Pyrolusite
at
Horton Mine (Horseshow; Lady Byron; Myrtle; Bryant; Wb. Dance No. 2; Bayhorse Fraction), Philipsburg Mining District (Flint Creek Mining District), Granite Co., Montana, USA