Schorl Crystal – BARG 018

Schorl crystal with good faces

Measurements:  44 x 41 x 33 mm 

Description:  A schorl crystal with good faces. There is a small patch (5 mm diametre) of hyalite opal on one of its facets (image bottom right).

The terminations have only a few very minute nicks. It has several natural pressure marks, and a bit of damage at the bottom, where it parted from its matrix.

Weight of Specimen:  91.6 g

Chemical Composition:  NaFe2+3Al6Si6O18(BO3)3(OH) (schorl)
                                    SiO2•1.5(H2O)  (opal)

Hardness on Mohs Scale:  (schorl)  7.5                     
                                   (opal)  5.5-6 

Location:  Erongo, Namibia.

Specimen Code:  BARG 018

US $ SOLD                   

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