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Dachiardite-Na Analcime & Pyrite

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CSL516148

Dachiardite-Na Analcime & Pyrite

Rare Mineral

Description Tabs

Description
Locality: 
Tanzenberg, Bruck-Mürzzuschlag District, Styria, Austria
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.9 × 1.4 cm
Description

This is a very nice thumbnail specimen of rare zeolite mineral dachiardite-Na. It forms colorless elongated crystals and sprays in association with tiny colorless analcime crystals and golden yellow pyrite crystals. 

Mineral Data
What's on the rock

Dachiardite-Na

Formula: 
(Na2,Ca,K2)5Al10Si38O96·25H2O
Strunz: 
9.GD.40
Crystal System: 
Monoclinic
Hardness: 
4.0 - 4.5
Type Locality: 
La Palaccia (Auf der Schneid), Duron Valley, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5
Loranth Minerals

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