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Nepheline With Pyroxene Group

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CLB86013

Nepheline With Pyroxene Group

Classic Locality

Description Tabs

Description
Locality: 
Caspar Quarry, Bellerberg, Ettringen, Eifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 6.8 × 5.5 cm
Largest Crystal: 
0.70cm
Description

Very nice specimen, full of colourless transparent nepheline crystals (analzyed) up to 0.7 cm.

The dark brown crystals are most probably pyroxene but could also be pseudobrookite (not analyzed).

There seems to be another white mineral present.

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

Pyroxene Group

Group Members: 
Clinopyroxene Subgroup
Orthopyroxene Subgroup

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