Poldervaartite

     

 

 

Origin: Kalahari Mn-field, N'Chwaning mine, South Africa

Sample size: top 5.8 x 4 x 4 cm, crystals to 1 cm, middle 2 x 2 x 2 cm, bottom 2.5 x 1.5 x 1 cm

 

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Origin: N'Chwaning Mine, near Kuruman, South Africa

Sample size: 4 x 3 x 2.5 cm (top), 5.5 x 4 x 3 cm (2nd row), 4.5 x 2.5 x 1.5 cm (3rd row), 4.5 x 4.5 x 3 cm (4th row), 5 x 4 x 2.5 cm (5th/6th row), 4 x 3 x 2 cm (7th row), 8 x 5.5 x 2.5 cm (8th/9th row), 3.2 x 2.4 x 1.4 cm (10th/bottom row)

 

  

Origin: N’Chwaning II Mine, Kalahari Manganese Field, Northern Cape Prov., S. Africa

Sample size: 5.5 x 4 x 1.6 cm

 

  

Origin: N’Chwaning Mine, Kuruman, South Africa

Sample size: 3 x 3 x 1.8 cm

 

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