Aquamarine, Schorl and Feldspar – NERA 025

Pale blue aquamarine crystal group with schorl needles, on matrix



Measurements:  42 x 26 x 23 mm

Description:  A group of pale blue aquamarine crystals with numerous schorl needles (variety foitite) in and on them. These sit on a feldspar matrix.

The aquamarine crystals have only a few very small nicks.

Weight of Specimen:  20.1 g

Chemical Composition:  Be3Al2Si6O18  (aquamarine
                                       NaFe2+3Al6Si6O18(BO3)3(OH)4
 (schorl)    
                                       KAlSi3O8 
 (feldspar)  

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

Location:  Erongo, Namibia.

Specimen Code:  NERA 025

US $ 45





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