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Hollandite

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SHS109209

Hollandite

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Description
Locality: 
Tercera Esperanza Mine, Cabezo de San Ginés, San Ginés de la Jara, Cartagena, Murcia, Spain
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.5 × 1.3 cm
Description

Nice hollandite crystals on matrix

Mineral Data
What's on the rock

Hollandite

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