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Analcime

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QRI785173

Analcime

Former collection Weber (CH) & Christian Mavris
Type Locality

Description Tabs

Description
Locality: 
Cyclopean Islands, Aci Trezza, Etna, Catania Province, Sicily, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.5 × 2.5 cm
Largest Crystal: 
1.00cm
Weight: 
26.00gr
Description

Three gemmy and fully lustrous analcime crystals are decorating this hyaloclastite matrix specimen in a most elegant fashion. The upper tip has a crystal perched on top, while the other two are partially enclosed into open vugs, a feature that also protected them. Noteworthy, the crystals have a strong glassy lustre and are so transparent one can see through them to the bottom matrix. Minimal peripheral bruising.

Cyclopean Islands are part of a local reservation and collecting is forbidden since 1998. 

This is a historical specimen from the former collection Weber (CH), assembled pre-1951. Needless to say, also in my collection. 

 

Previous labels supplied (not photographed)
Mineral Data
What's on the rock

Analcime

Formula: 
Na2(Al2Si4O12)·2H2O
Strunz: 
9.GB.05
Crystal System: 
Triclinic
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Cyclopean Islands, Acitrezza (Aci Trezza), Etna Volcanic Complex, Catania Province, Sicily, Italy

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