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Davyne

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