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Stilbite Mesolite & Celadonite

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CSW993990

Stilbite Mesolite & Celadonite

Collected July 2011
Classic Locality

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Description
Locality: 
Vestmannavegurin Roadcuts, Kvívík, Faroe Islands, Denmark
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7.2 × 4.7 cm
Weight: 
143.00gr
Description

A dense group of stilbite, mesolite and apophyllite crystals on thin basalt matrix with minor green celedonite. Collected in July 2011 from a large cavity in the basalt at this readout location. Some of the stilbite crystals display 'fishtail' twinning. L6

Previous labels supplied (not photographed)
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

Mesolite

Formula: 
Na2Ca2Si9Al6O30·8H2O
Strunz: 
9.GA.05
Hardness: 
5.0

Celadonite

Formula: 
K(Mg,Fe2+)Fe3+(Si4O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.0
Type Locality: 
Planitz, Zwickau, Saxony, Germany

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