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Talc Psm Quartz

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CR50739

Talc Psm Quartz

With Antique Label

Description Tabs

Description
Locality: 
Göpfersgrün, Wunsiedel, Upper Franconia, Bavaria, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.5 × 2.5 cm
Largest Crystal: 
1.50cm
Description

A rare example of the softest mineral replacing one of the harder species, and from the only place I know of from which it occurs - this ancient mining area in Bavaria. The location is now long-defunct and most specimens are of very old heritage, having traveled through many collections to get down to us in the present day.

Acquired 1955

Mineral Data
What's on the rock

Talc

Formula: 
Mg3(Si4O10)(OH)2
Strunz: 
9.EC.05
Crystal System: 
Triclinic
Hardness: 
1.0
Streak: 
White

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White