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Talc Psm Augite

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PDM877654

Talc Psm Augite

Pseudomorph

Description Tabs

Description
Locality: 
Dobrčice, Skršín, Most District, Ústí nad Labem Region, Czech Republic
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.1 × 0.9 × 0.5 cm
Description

Floater crystal of augite that has been completely replaced by talc from Dobrčice (Dobschitz in German), a super classic locality. Preserved in a glass container, it comes with an old original handwritten label.

Ex Robert Jakob specimen.

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

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

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