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Nosean & Nepheline

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NST628399

Nosean & Nepheline

Type Locality

Description Tabs

Description
Locality: 
Laacher See, Glees, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 3.5 cm
Description

Nosean from the type locality in combination with nepheline inside a vuggy sanidinite ejection block. Comes with a 19th century handwritten label.

Mineral Data
What's on the rock

Nosean

Formula: 
Na8(Al6Si6O24)(SO4)·H2O
Strunz: 
9.FB.10
Hardness: 
5.5
Type Locality: 
Sandkuhle, Maria Laach, Laach lake volcanic complex, Eifel, Rhineland-Palatinate, Germany

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