Kröhnkite

  

  

Krohnkite with natrochalcite

  

 

  

 

  

Origin: Chuguicamata mine, Antofagasta Prov., Chile

Sample size: 9.8 x 8.5 x 5.8 cm (top/2nd row), 6.2 x 4.4 x 2.4 cm (3rd/4th row), 7.3 x 4.9 x 4.2 cm (5th/6th row), 4.1 x 1.6 x 1.4 cm (bottom)

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  

  

This specimen is mostly comprised of rich royal blue kröhnkite. Also present are small dark green crystals of natrochalcite to 1 mm across.

Origin: Antofagasto, Chiquicamata, Chile

Sample size: 6.8 x 4.6 x 2.6 cm

 

Photo courtesy of: 

 

Green crusts on halite matrix

Origin: Mina San Francisco, Sierra Gorda, II-Region, Atacam Desert, Chile

Sample size: small cabinet

 

Photo courtesy of: