Quartz and Prehnite - NBB 113

Quartz crystal group with pale coloured prehnite

Measurements:  41 x 25 x 18 mm

Description:  A group of quartz crystals with pale coloured bladed prehnite. 

Some terminations have small nicks.

Weight of Specimen:  10.3 g

Chemical Composition:  SiO2  (quartz)
                                        Ca2Al2Si3O10(OH)2  (prehnite) 

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

Location:  Brandberg, Namibia.

Specimen Code:  NBB 113

US $ 15

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