Schorl Crystal Group with Feldspar – NERS 026

Schorl crystal group with feldspar

Measurements:  35 x 33 x 24 mm  

Description:  A group of schorl crystals with feldspar. The specimen has a few contact / pressure marks and nicks.

Weight of Specimen:  38.0 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 026

US $ 25








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