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Thomsonite & Apophyllite

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MGR807892

Thomsonite & Apophyllite

Classic Locality

Description Tabs

Description
Locality: 
Nesvik, Sunda, Faroe Islands, Denmark
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 4.4 × 2.4 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. 

Very rare Thomsonite from this uncommon locality. Several exposed light spheres in the center of matrix - complete and undamaged, really a very aesthetic assemble!

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

Apophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0