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Olmiite

Type Locality
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa
Mineral Data
CaMn2+[SiO3(OH)](OH)
Strunz: 
9.AF.90
Physical Properties
Streak: 
White
Hardness: 
5.0 - 5.5
Tenacity: 
brittle
Synonyms
Synonyms: 
- Olmiite
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