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Thomsonite & Apophyllite

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MGR805144

Thomsonite & Apophyllite

Classic Locality

Description Tabs

Description
Locality: 
Nesvik, Sunda, Faroe Islands, Denmark
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 3.7 × 1.9 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. 

What an unusual look and what a rare combination! Thomsonite spheres up to 15mm formed a very tri-dimensional, attractive assemble. On it you can see several sharp terminated, blocky apophyllite crystals - they are snowy white, like painted with snowy white varnish. Material from the locality is even more rare than other material from Faroe Islands and this one is even an uncommon and rare combination. No significant damages to report.

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