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MGR1042886

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Classic Locality

Description Tabs

Description
Locality: 
Nizhnyaya Tunguska River Basin, Evenkia, Krasnoyarsk Krai, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.2 × 8.4 × 6.7 cm
Description

An outstanding example of the specie in incredible dimension and quality!. This remote Siberian zeolite locality has produced some of the finest and largest examples of the species, such as this one. However, only  few are seen on the Western market. The crystal is complete-all-around, pristine, has textbook form and beautiful porcelaneous lustre. In the 80ties a low number of this pieces reached Austria, but I never saw a second in this size. The small matrix at the base is a nice accent, which makes it even more special.

Mineral Data
What's on the rock

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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