Excellent intensive bluish Haüyne alongside Sanidine Crystals

Excellent intensive blueish in addition to gemmy crystals of haüyne inwards a vug of a sanidinite ejection block.

Haüyne
Formula: Na3Ca(Si3Al3)O12(SO4)
System: Isometric
Colour: Blue, white, grey, …
Lustre: Vitreous, Greasy
Hardness: 5½ – 6

Locality: In den Dellen quarries, Niedermendig, Mendig, Laach lake volcanic complex, Eifel, Rhineland-Palatinate, Germany

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