Schorl with Aquamarine and Feldspar – NERA 008

Schorl crystal with bits of aquamarine and feldspar

Measurements:  57 x 46 x 18 mm                                        

Description:  A schorl crystal with bits of broken aquamarine on freldspar. The schorl crystal has a few lovely faces. 

The latter has a few pressure marks near its lower end.

Weight of Specimen:  39.6 g

Chemical Composition:  Be3Al2Si6O18  (aquamarine
                                      
NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)
                                       KAlSi3O (feldspar)  

Hardness on Mohs Scale:  (aquamarine)  7.5 - 8.0
                                         
(schorl)  7.5
                                          (feldspar)  6 - 6.5

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NERA 008

US $ 15

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