Calcite, (?)Duftite and Malachite - NTS 008

mall, gemmy calcite and (?)malachite crystals


Measurements:  76 x 53 x 28 mm

Description:  A specimen consisting of very small, gemmy calcite crystals, some with (what appears to be) duftite inclusions. The reverse side (image bottom left) appears to be small malachite crystals.

A beautiful specimen that displays well on a flat surface. No notable damage.

Weight of Specimen:  72.4 g

Chemical Composition:  Cu2+(CO3)(OH)2  (malachite)
                                        PbCu(AsO4)(OH)  (duftite)
                                        CaCO3
  (calcite)      

Hardness on Mohs Scale:  (malachite)  3.5 - 4
                                           (duftite
)  4 
                                           (calcite)  3  

Location:  Tsumeb, Northern Namibia.

Specimen Code:  NTS 008

US $ 105

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