Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Hiortdahlite

Views:
Watches:
GFM1022875

Hiortdahlite

Analysed

Description Tabs

Description
Locality: 
Langesundsfjorden, Larvik, Vestfold og Telemark, Norway
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.5 × 1 cm
Description

 Yellowish brown, glassy lustery flat long prismatic crystals up to 2 cm in size, next to Nepheline and Annite in light gray Microcline. Pretty and very rich specimens found around 1920.

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