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Prismatine With Sapphirine

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CLB158528

Prismatine With Sapphirine

ex collection Gerda Wimmer
Type Locality

Description Tabs

Description
Locality: 
Granulite Outcrop, Waldheim, Mittelsachsen, Saxony, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3 × 2.4 cm
Description

Very nice blueish gray prismatine ('kornerupine') crystals in matrix with a little aquamarin-blue sapphirine in one corner. Waldheim is the type locality of prismatine.

Mineral Data
What's on the rock

Prismatine

Formula: 
([ ],Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Strunz: 
9.BJ.50
Crystal System: 
Orthorhombic
Hardness: 
6.5 - 7.0
Type Locality: 
Granulite outcrop, Waldheim, Döbeln, Saxony, Germany

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

Seller Information

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