Bultfonteinite

  
 
  
Bultfonteinite with calcite
  
 
  
 
  
Well crystallised bultfonteinite!!
Origin: N'Chwaning II Mine, Kalahari, South Africa
Sample size: 4 x 3.5 x 1 cm (top), 5 x 2.5 x 2.25 cm (2nd row), 5 x 4 x 3 cm (3rd/4th row), 6.5 x 6 x 2.5 cm (5th/6th row), 6.5 x 4.25 x 4 cm (bottom)
 
  
Origin: Nchwaning Mine, Kalahari Manganese Field, South Africa
Sample size: 7.3 x 5.5 x 1.9 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
 
  
This specimen hosts sprays of acicular crystals of bultfonteinite and isolated crystals of beige poldervaartite to 0.5 cm in length.
Origin: N'Chwaning Mine, Kuruman, South Africa, Africa
Sample size: 6.9 x 4.5 x 1.2 cm (top/2nd row), 7.3 x 4.1 x 2 cm (3rd/bottom row)
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

  
Long acicular groups of bultfonteinite crystal groups to 4 mm grown freely in open space associated with creamy brown poldervaartite.
Origin: N'Chwaning II mine, Kalahari Mn Fields, Northern Cape Province, South Africa
Sample size: 6 x 5 x 3 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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