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Haüyne & Titanite & Augite

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ESM719942

Haüyne & Titanite & Augite

Description Tabs

Description
Locality: 
In den Dellen Quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
2 × 4.5 × 3 cm
Description

Blue haüyne crystals with yellow titanite crystals and black augite crystals in a sandinite ejection block

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

Augite

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