Calcite Crystals, Two Generations  - SKMF 047

Measurements:  28 x 21 x 16 mm

Description:  Lovely, clear, second generation calcite crystals grew over first generation (darker) calcite crystals, with a few minute sprays of oyelite attached to the clear calcite. 

Some parts of the first generation calcite protrudes neatly through the second generation calcite growth.

The specimen has no notable damage.

Weight of Specimen:  8.3 g

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

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

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

Specimen Code:  SKMF 047