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Topaz Var Pyknite

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PDM877661

Topaz Var Pyknite

Classic Locality

Description Tabs

Description
Locality: 
Altenberg, Erzgebirge, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 3.1 × 2.4 cm
Weight: 
31.00gr
Description

Subparallel aggregate of prismatic crystals of topaz pyknite with hematite from Altenberg, a classic European locality. Old specimen, accompanied by an original label from George L English & Co.

According to Vance (1945), George L. English (1864-1944), sold specimens under the name George L English & Co., from 1890 to 1905, year when the business was acquired by the Ward's Natural Science Establishment.

Ex Ennio Contarini #2964.

Vance, R.C. ( 1945). Memorial of George Letchworth English. American Mineralogist, 30, 130-134.

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

Seller Information

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