Prehnite Balls with Quartz Crystals on Matrix - NBB 042

Prehnite Balls with Quartz Crystals on Matrix

Measurements:  41 x 40 x 30 mm

Description:  Two stunning small balls of bladed prehnite (11 and 8 mm diameter respectively) with a few small quartz crystals, on a matrix of basalt and quartz. 

The prehnite is undamaged, but the main quartz crystal is damaged.

Weight of Specimen:  28.5 g

Chemical Composition:  Ca2Al2Si3O10(OH) (prehnite)  
                                    SiO2  (quartz)  
 
Hardness on Mohs Scale:  
(prehnite)  6-6.5                                 
                                           (quartz)  7 

Location:  Brandberg, Namibia.

Specimen Code:  NBB 042

US $ 70






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