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Sklodowskite & Thomsenolite

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UVM706983

Sklodowskite & Thomsenolite

Radioactive

Description Tabs

Description
Locality: 
Spider Mine, Juab County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 3.2 × 1.2 cm
Description

Yellow sklodowskite associated with sharp colorless to grey crystals of thomsenolite.   A very strange association.

Mineral Data
What's on the rock

Sklodowskite

Formula: 
Mg(UO2)2[HSiO4]2·5H2O
Strunz: 
9.AK.10
Hardness: 
2.0 - 3.0
Streak: 
Yellow
Type Locality: 
Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

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

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