Mineral description : Gummite

Gummite as yellow oxidation products around uraninite. From Varuträsk.

Mineral class Oxides : Uraninite - Ianthinite group.
Chemical formula Hydrated uranium oxide
Crystal system  
Habitus As rubber like masses.
Cleavage  
Hardness 2.5
Density  
Color Yellow to yellowish red.
Streak  
Luster  
Description  
Occurance As a secondary mineral associated to uranium ores.
Associates Uraninite
Notes  
Locations

To oxides index.
Mineral group index.
Main index.

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axelsson@acc.umu.se
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Last changed : 1998-08-01