Olmiite and Calcite - SKMF 009

Measurements:  38 x 38 x 26 mm

Description:  Two generations of olmiite growth, in two colour tones, with bits of calcite between and on them. 

The only notable damage is to the edges of the olmiite.

Weight of Specimen:  43.4 g 

Chemical Composition:  Ca₁₀B₂Si₈O₂₉•12(H₂O)  (oyelite)
                                      CaCO₃  (calcite)  

Hardness on Mohs Scale:  (oyelite)  5
                                          (calcite)  3

Location:  N'Chwaning 2, Kalahari Manganese Fields, Northern Cape, South Africa.

Specimen Code:  SKMF 009

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