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Topaz Var Pyknite

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SER886904

Topaz Var Pyknite

ex Americo Urbinati collection

Description Tabs

Description
Locality: 
Tin Mine, Altenberg, Sächsische Schweiz-Osterzgebirge, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.2 × 5.1 × 2.9 cm
Description

yellow masses on matrix of topaz var. pyknite

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