Small Azurite Geode with Malachite, Duftite and (?)Calcite - NTS 031

Lovely, small geode of small, gemmy azurite crystals. Tsumeb

Measurements:  55 x 29 x 23 mm

Description: 
A lovely, small geode of small, gemmy azurite crystals. The azurite sit on a type of rock matrix with duftite, malachite and (?)calcite.

Most of the azurite crysals are undamaged, with a few having nicks.

Weight of Specimen: 
36.0 g 

Chemical Composition:  Cu3(CO3)2(OH)(azurite)
                                  
Cu2+(CO3)(OH)2  (malachite)
                                           
PbCu(AsO4)(OH)  (duftite)
                                   CaCO
3  (calcite)                                    

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

Location:  Tsumeb, Northern Namibia.

Specimen Code:   NTS 031

US $ 75

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