Orpiment

  
 
  
 
  
Orpiment on barite matrix
  
Origin: Elbrusskiy mine, Caucasus, Russia
Sample size: 4 x 4.5 x 1.5 cm (top), 3 x 4 x 1.2 cm (2nd row), 4 x 2.5 x 3.2 cm (3rd row), 4 x 5 x 2 cm (bottom)
 
  
Origin: Huallapon mine, Pasto Bueno district, Pallasca Province, Ancash Dept., Peru
Sample size: 6 x 3.5 x 2.5 cm
 
  
 
  
 
  
Origin: Twin Creeks mine, north of Winnemucca, Humboldt County, Nevada, U.S.A.
Sample size: 3 x 2 x 3 cm (top), 6 x 5.5 x 3.3 cm (2nd row), 15 x 30 x 20 mm (bottom)
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 
 
  
 
  
Origin: Twin Creeks Mine, Humboldt Co, Nevada, U.S.A.
Sample size: 5.2 x 4.8 x 3 cm (top), 5.3 x 4 x 3.2 cm (bottom)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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 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