Pyrolusite : Mn4+O2
Photo added to mindat.org
“Nice pyrolusite balls. FOV 5mm Collection Z.Dvořák, photo P.Fuchs”
Petr Fuchs - 17th March 2013
Mindat.org Photo of the Day
Petr Fuchs - 3rd June 2013
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“Nice pyrolusite balls. FOV 5mm Collection Z.Dvořák, photo P.Fuchs”
Petr Fuchs - 2nd April 2019
Photo added to mindat.org
“Nice pyrolusite balls. Collection Z.Dvořák, photo P.Fuchs”
Petr Fuchs - 2nd April 2019
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