Unusually Shaped Quartz Crystal with Schorl - NER 025

Unusually shaped, double terminated quartz crystal with schorl

Measurements:  51 x 18 x 14 mm

Description:  A greyish-white crystal quartz with minute needle inclusions of schorl. There are also some schorl attached to the surfaces. The double terminated crystal has an unusual shape and facets. 

One of the termination points has a small nick, while the rest of the specimen has only a few very small nicks. This is part of a rare find at Erongo in 2015. 

Weight of Specimen:  13.1 g

Chemical Composition:  SiO2  (quartz)      
                                       NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)

Hardness on Mohs Scale:  (quartz)  7                                                                                          (schorl)  7.5

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NER 025