Brandberg Specimens in Bulk – BULK 035

Description:  Twenty mineral specimens (27 - 63 mm long) from Brandberg. Apart from one prehnite specimen, the rest are all quartz. 

The largest specimen has a neat, large blow-out, while some of the others have nicks.

Total weight of Specimens:  500 g 

Chemical Composition:  SiO₂  (quartz)
                                         Ca₂Al₂Si₃O₁₀(OH)₂  (prehnite)

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

Location:  Brandberg, Namibia (Africa).

Specimen Code:  BULK 035