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Hollandite In Quartz

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FNW94547

Hollandite In Quartz

Description Tabs

Description
Locality: 
Ambatofinandrahana, Amoron'i Mania, Madagascar
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 3.5 × 2.6 cm
Description

Acicular hollandite stars included in a complete quartz crystal.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
Fine Minerals World
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