Prehnite, Quartz, Calcite and Epidote Cluster - NBB 048

Measurements:  34 x 28 x 24 mm

Description:  A lovely mixture of prehnite, quartz and calcite, with traces of epidote. The crystals are quite gemmy! 

One of the photographs shows the bottom of the specimen, with a bit of the matrix. There is also some damage there. The specimen appears to have been attached to the mother rock at two places.

Weight of Specimen:  19.1 g

Chemical Composition:  Ca₂Al₂Si₃O₁₀(OH)₂    (prehnite)  
                                      SiO₂  (quartz)  
                                      CaCO₃  (calcite) 
                                      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 048

US $ 60

                         

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