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Braunite - N'Chwaning II Mine, Kalahari manganese fields, Northern Cape Province, South Africa (#:MINS8383)

Small cluster featuring clean lustruous black xls of Braunite on massive braunite. Not easy to find this specie in well represented xls!

Formula :
Mn2+>Mn63+[O8>/SiO4]
System: tetragonal Hardness:6-6½ Rarity:not common
Strunz id:VIII/B.9-03 - SILICATES
Name origin: After Wilhelm von Braun (1790-1872), official and minister in Gotha, Germany, supporter of geology and mineralogy. He supplied the original material for the description of braunite.

Specimen weight:30 gr.
Crystal size:Up to 6 mm
Overall size: 27mm x 23 mm x 28 mm

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Braunite - N'Chwaning II Mine, Kalahari manganese fields, Northern Cape Province, South Africa

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