Pyrolusite
Imini mine, Morocco
Photo: Ekaterina Pakhneva
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Pyrolusite
Imini mine, Morocco
Photo: Ekaterina Pakhneva
Microphotography of Geology
Titanite, Caspar Quarry, Germany, Photo by Stephan Wilfsried
Hauyne, Mendig, Germany, Photo by Volker Betz
Pyrolusite, Clara Mine, Germany, Photo by Edgar Muller
Cornwalite, Clara Mine, Germany, Photo by Edgar Muller
Rutile, Wanneenkopfe, Germany, Photo by Fred Kruijen
Pyrolusite, MnO2, is the most important manganese ore mineral. When it grow in crack or on bedding planes it often forms dendritic or arborescent crystal crowths, seen in this photo. This sample is 11 cm across.
source
Calcite & Pyrolusite Daye County, Huangshi, Hubei Province, China (Peoples Republic)
Pyrolusite on matrix
Locality: Morocco
Clouds (No. 143)
Bryce Canyon National Park, UT
Rhodochrosite on Pyrolusite
Locality: Uchucchacua Mine, Lima Department, Peru
Size: 9.5 × 7 × 8 cm
Kammererite's biggest fan (Feat. @hematite76‘s Pyrolusite)
Part of an art trade