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Sapphirine

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CSL111490

Sapphirine

Rare Mineral

Description Tabs

Description
Locality: 
Betroka District, Anosy, Madagascar
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.2 × 1.1 cm
Description

This is a Mg-Al silicate mineral of aenigmatite group. It forms rounded, blue crystals in feldspar-mica matrix.

Mineral Data
What's on the rock

Sapphirine

Formula: 
(Mg,Fe)4-xAl4+x[Al4+xSi2-xO18]O2
Strunz: 
9.DH.45
Hardness: 
7.5
Type Locality: 
Fiskenæsset old harbour, Fiskenæsset (Fiskenaesset; Qeqertarsuatsiaat), Nuuk (Godthåb), Sermersooq, Greenland
Loranth Minerals

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