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Thomsenolite

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CR510999

Thomsenolite

Rare Mineral

Description Tabs

Description
Locality: 
Ivittuut, Arsuk Fjord, Sermersooq, Greenland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 6 × 6.5 cm
Description

This is a very rich and good thomsenolithe specimen from Greenland.

Large and beautiful orientated thomsenolithe crystals in numerous vugs all over the specimen. Some large octahedral ralstonite crystals and minor pachnolite microcrystals are present.

Overall a very good old time specimen - collected in the 1980s

Mineral Data
What's on the rock

Thomsenolite

Formula: 
NaCa[AlF6]·H2O
Strunz: 
3.CB.40
Hardness: 
2.0
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland