Quartz with Pyrite and Calcite – NC 012

Measurements:  93 x 70 x 55 mm

Description:  A cluster of light smoky quartz crystals with traces of chlorite inclusions. There is a piece of pyrite (29 x 14 mm) wedged among (and attached to) the quartz crystals and a number of (?)calcite crystals on the quartz. 

The specimen has contact marks and nicks. 

Weight of Specimen:  306 g

Chemical Composition:  SiO₂ (quartz)  
                                        FeS₂ (pyrite)
                                        CaCO₃ (calcite) 
                                       
Hardness on Mohs Scale:  (quartz) 7  
                                           (pyrite) 6 - 6.5
                                           (calcite) 3 
Location:  Jan Coetzee Mine, Okiep Copper District, Namakwa District Municipality, Northern Cape, South Africa (this mine is no longer functioning).

Specimen Code:  NC 012

R 700

R 700

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