Exceptional Quartz Crystal with Prehnite and Analcime Crystals - NBB 061

Exceptional double terminated crystal with phantom, prehnite and analcime crystals

Measurements:  71 x 23 x 21 mm

Description:  A double terminated, clear quartz crystal with a light amethyst / smoky phantom. 

There is a small, neat prehnite crystal (9 mm long), a double terminated, clear quartz crystal and water clear analcime crystals (up to 3 mm wide) on the surface of the specimen. 

Inside the crystal there are some interesting gas inclusions. This exceptional specimen has only a few small nicks.  

Chemical Composition:  SiO2  (quartz)
                                   Ca2Al2Si3O10(OH)2  (prehnite)  
                                   NaAl(Si2O6)•(H2O)  (analcime)

Hardness on Mohs Scale:  (quartz)  7
                                      (prehnite)  6-6.5    
                                      (analcime) 5

Location:  Brandberg, Namibia

Specimen Code:  NBB 061

US $ SOLD


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