Prehnite, Quartz, Calcite and Epidote Cluster - NBB 048

Gemmy Prehnite, Quartz, Calcite and Epidote Cluster

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! 

The bottom photograph 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+2.25Al0.75(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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