Smithsonite Crystals on Chalcocite - NTS 058

Smithsonite crystals on chalcocite

Measurements:  40 x 20 x 16 mm

Description:  
A specimen consisting of orangy-brown smithsonite crystals on chalcocite. 

A few of the crystals have very small nicks.

Weight of Specimen:  17.6 g

Chemical Composition:  ZnCO3  (smithsonite basic formula)        
                                        Cu2S (chalcocite) 

Hardness on Mohs Scale:  (smithsonite )  4 - 5    
                                           (chalcocite) 2 - 3

Location:  Tsumeb, Northern Namibia.

Specimen Code:  NTS 058

US $ 55

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