Dioptase on Planchéite / Shattuckite, on Matrix – NKO 009

Measurements:  39 x 37 x 26 mm

Description:  A group of sparkling dioptase crystals (22 x 18 mm) sits on a quartzite matrix, partly coated with planchéite / shattuckite. 

Some crystals on the edges of the dioptase group are damaged. 

It is difficult to capture the sparkle of the bottle-green dioptase crystals on images, much better in real life.

Weight of Specimen:   44.1 g

Chemical Composition:  Cu₂+SiO₂(OH)₂  (dioptase) 
                                       Cu₈Si₈O₂₂(OH)₄•(H₂O)  (planchéite)  
                                       Cu₅(OH)₂(SiO₃)₄  (shattuckite)     

Hardness on Mohs Scale:  (dioptase)  5
                                          (planchéite)  5.5   
                                          (shattuckite)  3                              
                              
Location:  Kaokoland, Northern Namibia.

Specimen Code:  NKO 009

US $ 45