Dolomite

  

Cobaltoan dolomite

  

Cobaltoan dolomite cast with wulfenite

  

Copper (wires) on casted cobaltian dolomite

  

Cobaltoan dolomite

  

  

Cobaltoan dolomite cast with calcite

Origin: Tsumeb, Namibia

Sample size: 9 x 8 x 1.7 cm (top), 13.4 x 12.8 x 4.3 cm (2nd/3rd row), 5.6 x 3.8 x 1.7 cm (4th row), 10.2 x 7 x 3 cm (5th row), 19.2 x 12.2 x 3.7 cm (6th/bottom row)

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone