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Topaz Var Pyknite

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PDM724299

Topaz Var Pyknite

Classic Locality

Description Tabs

Description
Locality: 
Altenberg, Erzgebirge, Saxony, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 4.5 × 3.3 cm
Description

Subparallel aggregate of prismatic crystals of topaz (variety pyknite) with hematite from Altenberg, a Classic European locality.

Acquired in 1981. Ex Gabriel Fauvart specimen.

Mineral Data
What's on the rock

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

Pyknite

Variety Of: 

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Hardness: 
8.0
Hardness: 
0.0
Streak: 
white

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