Quartz Crystal with Prehnite and Calcite – NBB 104

Gemmy quartz crystal with gemmy prehnite and gemmy calcit

Gemmy quartz crystal with gemmy prehnite and gemmy calcite

 Measurements:   25 x 14 x 10 mm

Description:  A  gemmy, clear quartz crystal with two lesser quartz crystals with gemmy, bladed, light green prehnite and a small gem quality calcite crystal. The only damage to this specimen, is a few very small nicks to the termination.

Chemical Composition:  SiO2  (quartz)
                                    Ca2Al2Si3O10(OH)2    (prehnite)  
                                    CaCO3  (calcite) 
                                 
Hardness on Mohs Scale:  (quartz)  7 
                                       (prehnite)  6-6.5                                                                                               (calcite)  3          

Location:  Brandberg, Namibia

Specimen Code:  NBB 104

US $ 17




                                       
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