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Grandidierite

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BNG864639

Grandidierite

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Description
Locality: 
Taolañaro, Anosy, Madagascar
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.4 × 2.1 cm
Largest Crystal: 
2.00cm
Description

Superb rare gemmy blue green Grandidierite from Madagascar , 

Very hard to find , 

Nice gemmy Grandidierite from the locality.

Mineral Data
What's on the rock

Grandidierite

Formula: 
(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
Strunz: 
9.AJ.05
Hardness: 
7.5
Type Locality: 
Cap Andrahomana, Ranopiso Commune, Taolañaro District (Fort Dauphin), Anosy Region (Fort Dauphin Region), Tuléar Province (Toliara), Madagascar

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