Smoky/Citrine Quartz Crystal with Schorl and Feldspar - NER 056

Measurements:  54 x 22 x 21 mm

Description:  A gemmy, light  smoky/citrine quartz crystal with bits of schorl and feldspar to the lower half; small, clear crystals on two termination faces (probably quartz) and minute crystal inclusions of schorl just beneath the same two surfaces.

The termination point has a few minute nicks, while the rest of the specimen has quite a few pressure / contact marks and nicks.

Weight of Specimen:  36.1 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, Namibia.

Specimen Code:  NER 056

US $ 16