Andradite

  
  
 
  
  
 
  
Variety demantoid
Origin: Tubussis farm, Erongo, Namibia
Sample size: 6 x 4.2 x 3.5 cm (top/2nd row), 3.5 x 3.4 x 2.5 cm (3rd/4th row), 4.3 x 2.7 x 2.5 cm (bottom)
 
  
Origin: Blue River Deposit, Pavlovka, Primorskiy Kray, Far-Eastern Region, Russia
Sample size: 7.5 x 7.5 x 5 cm
 
  
  
Origin: Franklin, Sussex County, New Jersey, U.S.A.
Ex. Richard Hauck collection
Sample size: 2.3 x 2.8 x 2.1 cm
 
  
Variety melanite
Origin: Chihuahua, Mexico
Ex. Clyde Hardin collection
Sample size: 4.9 x 3.5 x 2.4 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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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