Calcite

  

 

  

 

  

 

  

  

 

  

 

 

 

  

  

 

  

 

  

Cobaltian calcite on pyrite

Origin: Bou Azzer, Anti Atlas Mts., Morocco

Sample size: 3 x 2.5 x 25 cm (top), 3.6 x 3 x 1.4 cm (2nd row), 4.1 x 4 x 2 cm (3rd/4th row), 7 x 5.5 x 3.3 cm (5th/6th row), 6 x 3.5 x 3.5 cm (7th/8th row), 5 x 3.7 x 3 cm (9th/10th row), 4.3 x 3 x 2.5 cm (11th/12th row), 5.5 x 4 x 2.6 cm (13th/14th row), 4.5 x 3.7 x 3.2 cm (15th/bottom row)

 

Photo courtesy of: 

 

  

  

Calcite pseudomorph after ikaite

Origin: Olenitsa River, White Sea Coast, Karelia Republic, Russia

Sample size: 7.8 x 4.7 x 4.6 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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