Malachite After Azurite and Drusy (?)Quartz Crystals on Matrix - NTS 036

Malachite after azurite and small, drusy (?)quartz crystals, on matrix

Measurements:  57 x 40 x 25 mm

Description:  Malachite after azurite, together with small, drusy (?)quartz crystals, sit on a conglomerate rock matrix in what could possibly be called a semi-geode. 

The edges of the semi-geode has damage.

Weight of Specimen:  78.2 g

Chemical Composition:  Cu2+(CO3)(OH)2  (malachite) 
                                        Cu3(CO3)2(OH)2  (azurite)                                                                   SiO2  (quartz)

Hardness on Mohs Scale:  (malachite)  3.5 - 4
                                          (azurite)  3.5 - 4                                                                                 (quartz)  7

Location:  Tsumeb, Northern Namibia.

Specimen Code:   NTS 036

US $ 35
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