Mineral description : Norbergite

Norbergite as red dots close to dollaceite (brownish) from Östanmossa.

Mineral class Silicates : Nesosilicates : Olivine group
Chemical formula Mg3(OH,F)2(SiO4)
Crystal system  
Habitus Often as small grains or aggregates.
Cleavage No cleavage.
Hardness 6.5
Density 3.14
Color Pale red.
Streak  
Luster  
Description  
Occurance  
Associates Tremolite, Dollaseite-(Ce)
Notes  
Locations A rare mineral
  • Östanmossagruvan, Norberg. As red grains with dollaseite and tremolite in limestone.
  • Kallmorberg, Norberg (W of Kapellgruvan). Grayish red with tremolite.
  • Also found in Hackspikgruvan and Johannagruvan, Norberg.

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Last changed : 1998-03-07