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Hiortdahlite & Wöhlerite

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HCH521442

Hiortdahlite & Wöhlerite

Description Tabs

Description
Locality: 
Langesundsfjorden, Porsgrunn, Vestfold og Telemark, Norway
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4 × 4 cm
Description

Intergrown yellow aggregate of Hiorthdalite of 2 mm large with darker yellow Wöhlerite in Pegmatite.

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

Wöhlerite

Formula: 
NaCa2(Zr,Nb)(Si2O7)(O,OH,F)2
Strunz: 
9.BE.17
Hardness: 
5.5 - 6.0
Type Locality: 
Løvøya (Løvø; Lövö; Lövöe), Langesundsfjorden, Porsgrunn, Telemark, Norway

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