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Muscovite Psm Nepheline

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SHS585786

Muscovite Psm Nepheline

ex Collection Edgar Franz (Freiberg/Saxony)

Description Tabs

Description
Locality: 
Costa di Viezzena, Trento Province, Trentino-Alto Adige, Italy
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.5 × 2.5 cm
Description

Nice pseudomorphose muscovite afterr nepheline so called liebenerite

Mineral Data
What's on the rock

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Nepheline

Formula: 
(Na,K)AlSiO4
Strunz: 
9.FA.05
Hardness: 
5.5 - 6.0
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy