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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