Interesting Arrangement of Quartz, Calcite, Prehnite and Epidote – NBB 101

Measurements:  29 x 13 x 10 mm

Description:  A druse of small clear quartz, calcite, prehnite and epidote crystals sit on a low quality quartz crystal (17 mm long). The arrangement of crystal clear calcite crystals, quartz, prehnite and a small vein of epidote, is truly stunning! 

The biggest quartz crystal (17 mm) and some very small crystals, have damage to them, otherwise there is minimal damage.  A micromount photographer will have a field day with this little specimen!

Chemical Composition:  SiO₂   (quartz)                              
                                    CaCO₃   (calcite
                                    Ca₂Al₂Si₃O₁₀(OH)₂    (prehnite)                                                       Ca₂Fe³⁺_2.25Al_0.75(SiO₄)₃(OH)  (epidote)

Hardness on Mohs Scale:  (prehnite) 6-6.5
                                      (quartz)  7      
                                      (calcite)  3       
                                      (epidote)  7  

Location:  Brandberg, Namibia 

Specimen Code:  NBB 101