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Prismatine With Corundum & Spinel

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CLB77695

Prismatine With Corundum & Spinel

Type Locality

Description Tabs

Description
Locality: 
Granulite Outcrop, Waldheim, Mittelsachsen, Saxony, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 2.7 × 2 cm
Largest Crystal: 
1.00cm
Description

Very nice prismatine crystals up to 1 cm from the type locality with (I presume) pinkish corundum var. ruby (not pictured) and tiny spinel crystals in matrix.

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

Corundum

Formula: 
Al2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
9.0
Streak: 
White

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
7.5 - 8.0

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