Jacobsite

  
  
 
Ex. Charlie Key collection
Origin: Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa
Sample size: 6 x 4 x 3 cm (top/2nd row), 5 x 4 x 3.25 cm (bottom)
 
  
Origin: Iron Knob, South Australia, Australia
Sample size: 2.5 x 2.1 x 1.9 cm
 
  
Origin: N'Chwaning II Mine, Kuruman, South Africa
Sample size: 3.8 x 3.5 x 3.2 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

Origin: Jakobsberg mine, Nordmark, Filipstad, Värmland, Sweden
Picture size: 3 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

  
Origin: N'Chwaning II Mine, Kuruman, Cape Province, South Africa
Ex. John Schneider collection
Sample size: 4.5 x 3 x 2.3 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

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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