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Apophyllite Stilbite & Mesolite

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MEX200388

Apophyllite Stilbite & Mesolite

ex private collection, discovery 1991
Classic Locality

Description Tabs

Description
Locality: 
Hvalfjordur, Iceland
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 3.5 × 1.2 cm
Description

A rich paragenesis specimen with there minerals. The apophyllite shows prismatic crystals with a white crust on the top of crystals. The stilbite is the second rich mineral on this specimen. The mesolite shows here small white crystals between the others. We obtained this material directly from the finder.

Mineral Data
What's on the rock

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

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