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Davyne

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GFM782873

Davyne

Description Tabs

Description
Locality: 
Mogok Township, Pyin-Oo-Lwin District, Mandalay, Myanmar (former Burma)
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.3 × 0.6 × 0.6 cm
Description

pale blue, highly lustrous, transparent, gemmy crystals of 7 mm (MM) to 1,2 cm (KS). These specimens are probably the finest known davyne crystals

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