Gypsum

  

Origin: Zimmersrode, Kassel, Germany

Ex. Marty Zinn collection

Sample size: 6.5 x 3.9 x 2.3 cm

 

  

Selenite with quartz pseudomorph after anhydrite

Origin: Rio Grande do Sul, Brazil

Ex. Marty Zinn collection

Sample size: 6.2 x 5.7 x 4.2 cm

 

Origin: Willow Creek, Nanton, Alberta, Canada

Ex. Marty Zinn collection

Sample size: 8.2 x 3.2 x 2.1 cm

 

  

Gypsum twins

  

  

Gypsum twins, ex. Marty Lewadny collection

Origin: Red river Floodway, Winnipeg, Ontario, Canada

Sample size: 5.1 x 4.4 x 3.8 cm (top/2nd row), 6.7 x 6.5 x 4.8 cm (3rd/4th/bottom row)

 

  

Origin: Jet, Alfalfa Co., Oklahoma, United States

Ex. DeVito collection

Sample size: 3.5 x 1 x 1 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  

 

  

  

Yellowish long bladed, translucent crystals, some of which are twinned

Origin: Red Rive Floodway, Winnipeg, Manitoba, Canada

Sample size: 11 x 7 x 7 cm (top/2nd row), 8 x 7 x 7 cm (3rd/4th/bottom row)

 

Photo courtesy of: