Prehnite on Basalt Matrix – BARG 002

Prehnite conglomerate crystals on thin basalt matrix

Measurements:  90 x 57 x 34 mm

Description:  A rather large prehnite conglomerate crystals on a thin basalt matrix. The bits of whitish mineral on the prehnite is feldspar. 

Besides a few small nicks to the centre crystals, the only other notable damage is to the edges.

Weight of Specimen:  177.0 g

Chemical Composition:  Ca2Al2Si3O10(OH)  (prehnite)  
                                 

Hardness on Mohs Scale:  
(prehnite)  6-6.5        

Location:  Brandberg, Namibia.

Specimen Code:  BARG 002

US $ 60    




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