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Thomsonite

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CR628544

Thomsonite

Classic Locality

Description Tabs

Description
Locality: 
Hammerunterwiesenthal, Oberwiesenthal, Erzgebirgskreis, Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7 × 4.5 cm
Description

A very rich specimen of this rare zeolite species, which seldom crystallizes in zeolite deposits to the same degree as its more common cousins. This specimen is a rich example, from a classic old locality.

Ex E. Henkel collection, ex J. Henrich collection

Mineral Data
What's on the rock

Thomsonite

Synonym Of: 

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5

Thomsonite-Sr

Formula: 
Na(Sr,Ca)2[Al5Si5O20]·7H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 0.0