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Hiortdahlite

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KAT604690

Hiortdahlite

Description Tabs

Description
Locality: 
Langesundsfjorden, Porsgrunn, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.4 × 4.8 × 2.8 cm
Description

brownish, lustrous hiortdahlite combined with black biothite on matrix

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

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