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Grandidierite

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ESM208607

Grandidierite

Description Tabs

Description
Locality: 
Cap Andrahomana, Andranobory, Taolañaro, Anosy, Madagascar
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 3.9 × 4 cm
Description

Well defined sharp greenish blue grandidierite crystal on matrix

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