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Hollandite

Type Locality
Gowari Wadhona Mine, Chhindwara District (Chindawara District; Chindwara District), Jabalpur Division, Madhya Pradesh, India
Mineral Data
Ba(Mn4+6Mn3+2)O16
Strunz: 
4.DK.05a
Physical Properties
Streak: 
Black
Hardness: 
4.0 - 6.0
Tenacity: 
brittle
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