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Quadridavyne Anorthite

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ZLT722245

Quadridavyne Anorthite

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Description Tabs

Description
Locality: 
Bellerberg, Ettringen, Eifel Mountains, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
0.9 × 1.7 × 0.12 cm
Description

Part of a xenolith with prismatic, hexagonal crystals of quadridavyne ( analysed)  und tabular anorthite.

Mineral Data
What's on the rock

Quadridavyne

Formula: 
(Na,K)6Ca2(Al6Si6O24)Cl4
Strunz: 
9.FB.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Ottaviano, Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Anorthite

Formula: 
CaAl2Si2O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

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