Geodes of (?) Shattuckite and Calcite, on Matrix - NKO 012

Small geodes of (?)shattuckite and calcite, on matrix

Measurements:  50 x 35 x 25 mm

Description:  Small geodes of (what looks like) shattuckite and calcite, sit on a matrix of (?) quartz and feldspar.  Image bottom left shows the bottom of the specimen.

The two exposed geodes have some damage to the edges.

Weight of Specimen:  26.5 g  

Chemical Composition:  Cu5(OH)2(SiO3)(shattuckite)  
                                       KAlSi3O8  (feldspar) 

Hardness on Mohs Scale:  
(shattuckite)  3.5
                                           (feldspar)  6 - 6.5                           

Location:  Kaokoland, Northern Namibia.

Specimen Code:  NKO 012

US $ 25

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