Schorl and Quartz - NER 043

Interesting specimen quartz and schorl

Measurements:  65 x 35 x 24 mm

Description:  A light smoky quartz crystal with tiny schorl crystals on its top surfaces, sits embedded in a schorl crystal. The flat quartz crystal has very little damage and has pressure marks and facets on its bottom side. 

The top of the schorl crystal has only a few very small nicks, while its bottom side has contact and pressure marks and a few small nicks.

Weight of Specimen:  51.9 g

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

Hardness on Mohs Scale:  (quartz)  7                                                                                           (schorl)  7.5

Location:  Erongo, Namibia.

Specimen Code:  NER 043

US $ 65

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