Gypsum

Gypsum penetration twin, brown due to oriented inclusions of quartz sand grains
Origin: Great Salt Lake, Oklahoma, U.S.A.
Picture height: 8.5 cm
Sample owner: W.R.Moorer 
 

Photo courtesy of: 

Pieter Stemvers, Leusden, Netherlands

email: stemvers@hetnet.nl

 

Origin: Newton, Alberta, Canada
Owner: Milton Speckels
Sample size: about 2 cm
 
Gypsum (sand selenite)
Origin: Kansas, U.S.A.
Owner: Milton Speckels
Sample size: about 2 cm
 
Gypsum (sand selenite)
Origin: China Lake, San Bernardino Co., California, U.S.A.
Owner: Milton Speckels
Sample size: crystal group about 12 cm
 

Photo courtesy of: 

Milton Speckels

Photo-Atlas of Minerals

 

  
 
  
 
  
 
  
Origin: Las Salinas halite mine, near Otume Village, south of Pisco, Ica Department, Peru
Sample size: 6 x 3 x 4.5 cm (top), 6.5 x 5 x 5 cm (2nd row), 5.5 x 4 x 8 cm (3rd/4th row), 5.5 x 4 x 6 cm (bottom)
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

  
Light yellow, glassy and transparent long bladed selenite crystals - with fishtail twins - to 4 cm protruding from a large aggregate of smaller bladed selenite crystals.
Origin: Red River Floodway, near Winnipeg, Manitoba, Canada
Sample size: 9 x 5 x 6 cm
 
  
Origin:  Australia
Sample size: 8 x 3.5 x 2 cm
 
  
Variety satin spar
Origin: Watchet Cliffs, Somerset, England
Sample size: 8.5 x 3.5 x 3 cm
 
  
Origin: Shelford Farm, Sturry, near Canterbury, Kent, England
Sample size: 11 x 3 x 2 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
     
Selenite with near the base included atacamite. There is chrysocolla on the base as well.
Origin: Lilly Mine, Ica, Peru
Sample size: 3.1 x 2.2 x 1.8 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

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