Quartz Crystal Group – NBB 153

Quartz crystal group with some hematite inclusions

Measurements:  83 x 48 x 25 mm

Description:  A group of clear quartz crystals, some with bits of red hematite inclusions. There are a few small prehnite crystals and white feldspar among the crystals, also a few very minute bits of epidote. 

Some of the crystals are damaged. The specimen displays well on a flat surface.          

Weight of Specimens:  79.7 g

Chemical Composition:  SiO2  (quartz)
                                       Ca2Al2Si3O10(OH)  (prehnite) 
                                        KAlSi3O8 (feldspar) 

Hardness on Mohs Scale:  (quartz)  7
                                          (prehnite)
 6-6.5
                                           (feldspar)  6 - 6.5

Location:  Brandberg, Namibia.

Specimen Code:  NBB 153

US $ 75


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