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Quadridavyne

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CHA557795

Quadridavyne

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Description
Locality: 
Somma-Vesuvius, Naples Province, Campania, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 2.2 cm
Description

very rich specimen with many good colourless brilliant exagonal prism of the rare analysed quadridavyne on lava from the type locality

Mineral Data
What's on the rock

Quadridavyne

Formula: 
(Na,K)6Ca2(Al6Si6O24)Cl4
Strunz: 
9.FB.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Ottaviano, Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

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