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Davyne

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GMN181993

Davyne

Classic Locality

Description Tabs

Description
Locality: 
Caspar Quarry, Bellerberg, Ettringen, Eifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1 × 0.9 cm
Description

Well-formed white davyn crystals in the matrix cavities.

Mineral Data
What's on the rock

Davyne

Formula: 
(Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2
Strunz: 
9.FB.05
Crystal System: 
Hexagonal
Hardness: 
5.5 - 6.0
Streak: 
white
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

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