.Quartz and Calcite Cluster - NBB 207

Measurements:  58 x 35 x 28 mm

Description:  A cluster of quartz and calcite crystals on a matrix of basalt, with traces of epidote. The red colouring in the calcite appears to be hematite.

Some sections of the specimen has some damage.

Weight of Specimen:  35.6 g

Chemical Composition:  SiO₂  (quartz)
                                       CaCO₃  (calcite) 

Hardness on Mohs Scale:  (quartz)  7 
                                          (calcite)  3

Location:  Brandberg, Namibia.

Specimen Code:  NBB 207

US $ 35 
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