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Thomsonite-Ca

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MEX190728

Thomsonite-Ca

ex Franke, Erfurt collection
Classic Locality

Description Tabs

Description
Locality: 
Hammerunterwiesenthal, Oberwiesenthal, Erzgebirgskreis, Saxony, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
11.7 × 7.2 × 3.9 cm
Description

Large specimen with nice thomsonite crystal balls from older collection. The thomsonite shows a translucent white color with high lustre.

Mineral Data
What's on the rock

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Old Kilpatrick, Strathclyde (Dunbartonshire), Scotland, UK