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Nepheline

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Watches:
RGR797085

Nepheline

Description Tabs

Description
Locality: 
Podhorni Hill, Mariánské Lázně, Cheb, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4 × 4 cm
Description

Locality Podhorní vrch (Podhorn hill) is a small volcanic hill in western Bohemia, which Johann Wolfgang von Goethe (1749-1832) describes in his diary on geology and landscape. Nestled aesthetically in a vug are sharp hexagonal prisms of the uncommon sodium, potassium silicate, Nepheline with flat black crystals clinopyroxene.

Mineral Data
What's on the rock

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