Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Grandidierite

Views:
Watches:
JYJ846809

Grandidierite

Description Tabs

Description
Locality: 
Vohibola, Behara, Amboasary Sud, Anosy, Madagascar
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.8 × 3.6 cm
Description

Intense blue grandidierite from the Vohibola phlogopite deposit, Ambosarry, Madagascar. Good and large specimen.

 

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