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Apophyllite

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MGR805078

Apophyllite

Classic Locality

Description Tabs

Description
Locality: 
Klaksvik, Borðoy, Faroe Islands, Denmark
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 8.1 × 4.5 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.

The particular specimen features several aggregates of sharp, lustrous, snowy white apophyllite crystals set on dark, partly green (celadonite) matrix. Amazing contrast and and out-standing rarity for each zeolithe collector. No significant damages to report.

 

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