Quartz and Feldspar Cluster – NER 021

Measurements:  53 x 26 x 19 mm

Description:  A beautiful arrangement of gemmy, light smoky quartz crystals and lovely sprays of feldspar with minute black tourmaline crystals. 

There are some feldspar and schorl inclusions in some of the quartz crystals.  

The specimen has very little damage.

Weight of Specimen:  17.8 g

Chemical Composition:  SiO₂  (quartz)                                          
                                       KAlSi₃O₈   (feldspar) 
                                       NaFe²⁺₃Al₆Si₆O₁₈(BO₃)₃(OH)₄  (schorl)

Hardness on Mohs Scale:  (quartz)  7                                                                                             (feldspar)  6 - 6.5
                                          (schorl)  7.5

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NER 021

US $ 45

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