Diopside

  

Diopside in anhydrite

Origin: Kokcha Valley, Badakhshan, Afghanistan, Asia

Sample size: 12 x 6.5 x 5.4 cm

 

  

Origin: Orford Nickel Mine, near St. Denis de Brampton, Quebec, Canada

Sample size: 2.1 x 1.4 cm (left), 2.5 x 1.3 cm (right)

 

  

Violan, manganese variety of diopside

Origin: Praborna Mine, Valle d'Aosta, France

Sample size: 2.5 x 2 x 1.5 cm

 

     

  

Chrome diopside with byssolite, acicular form of tremolite, on calcite

  

 

  

Origin: Tormiq, Baltistan, Pakistan

Sample size: 4.6 x 2.3 x 1.7 cm (top/2nd row), 1.6 cm (2nd row), 3.7 x 0.5 x 0.4 cm (bottom)

 

  

This specimen has numerous blocky crystals of pistachio green diopside to 1.7 cm across with calcite and magnetite. Malakolite was a local term used for this varietal form of diopside but is now obsolete.

Origin: Långban, Sweden
Harry von Eckermann Collection

Sample size: 7.5 x 5 x 3.4 cm

 

  

  

Violet to light blue, manganese-rich diopside variety violan

Origin: Praborna Saint-Marcel,, Aosta Valley, Italy

Ex. Giovanni Signorelli collection

Sample size: 4 x 5 x 3 cm

 

  

  

Diopside crystals up to 0.3 cm with some grossular garnets up to 0.5 cm.

Origin: Pakistan

Ex. Alessandro Genazzani collection

Sample size: 5 x 1.5 x 2 cm

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