Gypsum

  

  

"Fishtail" twin selenite

Origin: Naica, Chihuahua, Mexico

Sample size: 13.0 x 4.9 x 2.3 cm

 

  

"Hourglass" selenite

Origin: Great Salt Plains Reservoir, Jet, OK, U.S.A.

Sample size: 6.7 x 4.5 x 4 cm

 

  

  

Gypsum on "dogtooth" calcite

Origin: Santa Eulalia, Chihuahua, Mexico

Sample size: 10.4 x 8.7 x 5.0 cm

 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  

  

Selenite with twining

Origin: Red River flood plain, Manitoba, Canada

Ex. Dave Douglass collection

Sample size: 7 x 6.5 x 5.5 cm

 

  

Gypsum with minor chalcocite

Origin: Tsumeb Mine, Tsumeb, Namibia

Ex. Bill Bernie collection

Sample size: 5.5 x 4.6 x 2.6 cm

 

Photo courtesy of: