Quartz, Feldspar and Schorl – NER 009

Measurements:  75 x 52 x 28 mm

Description:  A lovely arrangement of faint smoky coloured quartz crystals (up to about 35 mm long) and feldspar and bits of schorl. 

Some of the quartz crystals' terminations have a few small nicks.

Weight of Specimen:  52 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 009

US $ 45
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