Call number:
D11 (11)
Classification:
Oxides
Translated title:
Pyrolusite
Place of origin:
Langeberg/Saxony, Germany
Depositional environment:
A common Mn mineral, although difficult to distinguish from similar Mn minerals, pyrolusite forms under oxidizing conditions and high pH. Mainly a mineral of lacustrine, shallow marine, and bog deposits, it is also found in the oxidized zones of manganiferous ore deposits and as deposits formed by circulating meteoric water. Both colloidal processes and bacterial action are important in its formation.
Description:
A common Mn mineral, although difficult to distinguish from similar Mn minerals, pyrolusite forms under oxidizing conditions and high pH. Mainly a mineral of lacustrine, shallow marine, and bog deposits, it is also found in the oxidized zones of manganiferous ore deposits and as deposits formed by circulating meteoric water. Both colloidal processes and bacterial action are important in its formation.
Chemical formula:
b-MnO2
Crystal system:
Tetragonal
Crystal schema:
Ditetragonal Dipyramidal
Persistent URL:
Digitized items 1
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Photograph
uoadl:185642
Photo number:
1
