Azurite, Malachite, Calcite and Duftite on Matrix - NTS 024

Azurite, malachite, calcite andduftite on matrix, Tsumeb



Measurements:  50 x 44 x 22 mm

Description:  
Lovely drusy azurite crystals share an unknown matrix with duftite, malachite and calcite.

The azurite has no notable damage except to the back edge. There is a crack running across the matrix, but it appears to be stable.


Weight of Specimen:  97.1 g

Chemical Composition:  Cu3(CO3)2(OH)(azurite)
                                    Cu2+(CO3)(OH)2  (malachite)

                                    PbCu(AsO4)(OH)  (duftite)

                                    CaCO3
  (calcite)
                                    

Hardness on Mohs Scale:  (azurite)  3.5 – 4
                                      (malachite)  3.5 - 4

                                      (duftite
)  4 

                                      (
calcite)  3
  

Location:  Tsumeb, Northern Namibia.

Specimen Code:   NTS 024

US $ 75



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