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Stilbite & Thomsonite

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MGR899376

Stilbite & Thomsonite

Classic Locality

Description Tabs

Description
Locality: 
Skalabotnur, Skálafjørđur, Eysturoy Island, Faroe Islands, Denmark
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.4 × 8.4 × 5.7 cm
Description

Here we have a wonderful round shaped cluster of snowwhite stilbite crystals from Denmark. The specimen is in great condition. This is rare material and hard to find on the common market.

Mineral Data
What's on the rock

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White

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