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Haüyne With Titanite Nosean & Augite

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CLB158523

Haüyne With Titanite Nosean & Augite

ex collection Aidara-Hühne
Classic Locality

Description Tabs

Description
Locality: 
In den Dellen Quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.3 × 8.2 × 6 cm
Largest Crystal: 
0.40cm
Description

Very deep blue haüyne grains, some with crystal surfaces, on matrix with golden-brown titanite, black augite and a colorless mineral, probably nosean and/or fluorapatite, sanidine ... The haüyne color is really great and at least one of the grains could be facetted.

Mineral Data
What's on the rock

Haüyne

Formula: 
(Na,Ca)4-8(Al6Si6O24)(SO4,S,Cl)1-2
Strunz: 
9.FB.10
Hardness: 
5.5 - 6.0
Type Locality: 
Lake Nemi, Alban Hills, Rome Province, Latium, Italy

Titanite

Formula: 
CaTi(SiO4)O
Strunz: 
9.AG.15
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Titanite occurrence, Hauzenberg, Lower Bavaria, Bavaria, Germany

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

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

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