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Natural heritage
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Adrian Smith Mineral Collection
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Minerals, gems and meteorites
/
268-402 Silicates
/
Crystaline
401. Poldervaartite. Crystaline
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Dana number
78.1.8.1
Chemical formula
Ca(Ca
0.5
Mn
0.5
)[SiO
3
(OH)](OH)
Crystal class
Orthorhombic
Mohs hardness
5
Specific gravity
2.91
Collected in
N'Chwaning, South African
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