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Thomsonite

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MGR805138

Thomsonite

Classic Locality

Description Tabs

Description
Locality: 
Gamlarett Quarry, Streymoy Island, Faroe Islands, Denmark
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.7 × 6.6 × 3.5 cm
Description

Viamineralia had the great opportunity to acquire an old collection - the former owner used to spend his holidays on Iceland and Faroe Islands for decades and had a collection with  mineral only from this one area. In this special auction we will present some of the very best pieces. 

And this was the very best Thomsonite of this collection! The sphere is even complete at the backside and 35mm in diameter. It shows a dark brown color and excellent contrast to matrix. Size and arrangement makes it look very aesthetic, an absolutely out-standing piece and of highest relevance for the locality. Undamaged.

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