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Thomsenolite

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JYJ616731

Thomsenolite

Description Tabs

Description
Locality: 
Ivittuut, Arsuk Fjord, Sermersooq, Greenland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3 × 1.5 cm
Description

Colourless thomsenolite crystals in a cavity. Beautiful!

 

References:

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 112, 117; Acta Cryst. 23 (1967).; Petersen, O.V. and Secher, K. (1993): The minerals of Greenland. Mineralogical Record 24 (2): 1-65 (p.36)

Mineral Data
What's on the rock

Thomsenolite

Formula: 
NaCa[AlF6] · H2O
Strunz: 
3/C.02-20
Crystal System: 
Monoclinic
Hardness: 
2
Colour: 
Colourless, white, pale
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland
Dimorph Of: 

Pachnolite

Formula: 
NaCa[AlF6]·H2O
Strunz: 
3.CB.40
Hardness: 
3.0