Peculiarly Shaped Prehnite, Quartz and Calcite Specimen – NBB 055

Peculiarly shaped prehnite, quartz and calcite specimen

 Measurements:  38 x 25 x 20 mm

Description:  Two lots of bladed prehnite crystals on a matrix of calcite and quartz crystals. The larger prehnite ball has some damage to it where it parted from the matrix.

This specimen's peculiar shape makes it very special! 

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

Location:  Brandberg, Namibia

Specimen Code: NBB 055

US $ 65



                                       
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