Gypsum

  
  
Ramshorn gypsum
Origin: Santa Eulalia, Chihuahua, Mexico
Sample size: 7.5 x 4.3 x 3.8 cm
 
  
  
Ex. Marty Lewadny collection
  
Gypsum twin
Origin: Red River Floodway, nr. Winnipeg, Manitoba, Canada
Sample size: 6.6 x 5.5 x 4.2 cm (top/2nd/3rd row), 7.5 x 5.3 x 5.1 cm (bottom)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Origin: Dal' Negorsk, Primorskiy Area, Russia
Sample size: 6.6 x 6 x 3 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

 
  
Origin: Vista Ridge, Colorado, U.S.A.
Sample size: 6.1 cm wide (top), 8.4 cm wide (bottom)
 
Origin: Winnipeg, Manitoba, Canada
Sample size:  5.7 cm tall
 
  
  
Gypsum with twinned crystals
Origin: Red River Floodway, Winnipeg, Manitoba, Canada
Sample size: 8 x 5.5 x 8.5 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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Back to Alphabetical list Physical, chemical and crystallographic description Optical properties/Thin sections SEM images TEM images vibrational spectra description IR spectra Raman spectra N-IR spectra F-IR spectra IES spectra