Epidote and Quartz Crystals on Matrix - NBB 086

Measurements:  55 x 40 x 25 mm

Description:  Epidote, small quartz cystals and bits of prehnite, sit on a basalt matrix. 

The only notable damage is to the edges of the crystal area. The specimen displays well on a flat surface.

Weight of Specimen:  49.3 g

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

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

Location:  Brandberg, Namibia.

Specimen Code:  NBB 086

US $ 18