Gypsum

  

Gypusm partially included with green malachite

  

  

Gypusm included with green malachite, gypsum and atacamite

Origin:  Lilly Mine, Peru

Sample size: 5.9 x 3.8 x 2.1 cm (top/2nd row), 7.4 x 5.3 x 4.3 cm (3rd/bottom row)

 

  

Origin: Red River Floodway, nr. Winnipeg, Manitoba, Canada

Sample size: 5.6 x 5.2 x 5.2 cm

 

  

  

Origin: Whyalla Norrie, South Australia, Australia

Sample size: 21.1 x 16.2 x 9.1 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

1 cm large gypsum crystals in matrix

Origin: Saba, The Netherlands Antilles

Sample size: 2.5 x 4 cm

 

9 cm long intergrown gypsum crystals

Origin: St. Eustatius, The Netherlands Antilles

Sample size: 4 x 9 cm

 

Photo courtesy of: