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Hiortdahlite

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LGM652745

Hiortdahlite

Ex Dr. Krantz, Bonn, Germany
With Antique Label

Description Tabs

Description
Locality: 
Langesundsfjorden, Larvik, Vestfold og Telemark, Norway
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
6 × 9 × 2.5 cm
Weight: 
163.00gr
Description

Hiortdahlite is a Zr-bearing silicate, belonging to the wöhlerite group. It is quite rare and usually occurs in small yellowish crystals in volcanic rocks or ejection blocks. However, the type locality is at the Langesundsfjorden, Larvik, Vestfold, Norway.

The specimen features several in-grown, yellow-brownish hiortdahlite crystals up to 0.8 cm in syenite matrix.

Comes with old Southwest Scientific Company / Scott J. Williams label dated 1964-1966.

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

Seller Information

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