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Sapphirine & Phlogopite

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SHS745935

Sapphirine & Phlogopite

Description Tabs

Description
Locality: 
Androy, Madagascar
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 6 × 4 cm
Description

Nice sapphirine and phlogopite in 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

Phlogopite

Formula: 
KMg3(AlSi3O10)(OH,F)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 3.0
Streak: 
White
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