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Analcime With Gonnardite & Tacharanite

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MII156997

Analcime With Gonnardite & Tacharanite

Catania Province
Fluorescent

Description Tabs

Description
Locality: 
Mount Caliella, Palagonia, Catania Province, Sicily, Italy
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.5 × 3 cm
Largest Crystal: 
1.00cm
Description

Specimen with beautiful crystals of Gonnardite various sizes.
Many areas with smaller and clear crystals of analcime
and a few crystals of chabazite and tacharanite.

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

Gonnardite

Formula: 
(Na,Ca)2(Si,Al)5O10·3H2O
Strunz: 
9.GA.05
Hardness: 
4.0 - 5.0
Type Locality: 
La Chaux de Bergonne, Gignat, Saint-Germain-Lembron, Puy-de-Dôme, Auvergne, France

Tacharanite

Formula: 
Ca12Al2Si18O51·18H2O
Strunz: 
9.HA.75
Crystal System: 
Monoclinic
Hardness: 
5.0
Colour: 
White
Type Locality: 
Portree, Trotternish, Isle of Skye, North West Highlands (Inverness-shire), Scotland, UK
MineralsIsland

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