Schorl Crystal with Partial 'Mercedes' Sign –  NERS 019

Schorl specimen with partial 'mercedes' sign

Measurements:  60 x 50 x 45 mm

Description: A well-formed schorl crystal with a shiny, jet-black colour, multiple terminations and a partial 'mercedes' sign. The specimen has striking facets, and is partly covered with brownish feldspar. 

Weight of Specimen:  224.9 g

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

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

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NERS 019

US $ 130

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