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Hiortdahlite On Sanidine

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SHS789055

Hiortdahlite On Sanidine

Description Tabs

Description
Locality: 
Laacher See, Glees, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 0.8 × 0.9 cm
Description

Nice hiortdahlite crystals on sanidin

Mineral Data
What's on the rock

Hiortdahlite

Formula: 
(Ca,Na)3(Zr,Ti)(Si2O7)(O,OH,F)2
Strunz: 
9.BE.17
Crystal System: 
Triclinic
Hardness: 
5 - 5½
Colour: 
Yellow, yellowish-brown

Sanidine

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic - Prismatic
Hardness: 
6.0
Streak: 
White
Type Locality: 
Drachenfels, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany