RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Mineral: Birnessite
English Trivial:
Formula: (Na,Ca,K)(Mn⁺⁴,Mn⁺³)₂O₄·1.5H₂O
Mineralogical Group: Mn oxides/hydroxides
Petrological Group: heavy minerals
Crystallographic System: Prismatic
Strunz Classification: IV/F
Molar Mass in g/mol: 215.71
Density in g/cm³: 3
Comment: member of the group of Hydrous Manganese Oxides (HMO); empirical formula Na0.3Ca0.1K0.1Mn4+Mn3+O4·1.5(H2O)
 
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