Althausite

     
Origin: Overntjern, Buskerud, Norway
Sample size: 3.2 x 5 cm specimen. Numerous 0.5 cm grayish to maroon colored and opaque crystals of althausite are found on this specimen
 

Photo courtesy of: 

John Veevaert, Trinity Minerals Co

Trinityminerals.com

 

  
2 cm sized brown crystals in serpentine-magnesite matrix
Origin: Dypingdal Serpentine-Magnesite deposit, Snarum, Modum, Norway
Sample size: 3 x 7 cm
 
Greyish vitreous masses in serpentine/magnesite matrix
Origin: Tingelstadtjern, Modum, Norway
Sample size: 4 x 6 cm

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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