Quartz Crystals on MatrixNBB 150

Quartz crystals with amethyst / smoky colour, on matrix

Measurements:  71 x 62 x 50 mm

Description:  Quartz crystals with amethyst / smoky colouring, sit on a feldspar matrix with bits of epidote. Some of the crystals have minute bits of red hematite included.

The large crystal ( 46 mm long) has no notable damage. What appears (on 1st glance) to be a nick in the termination, is actually where two female crystals have fused into one crystal, and the terminations joined. 

Some of the small crystal have small nicks.

Weight of Specimen:  201.7 g

Chemical Composition:  SiO2  (quartz)
                                        KAlSi3O8 (feldspar)

Hardness on Mohs Scale:  (quartz)  7
                                           (feldspar)  6 - 6.5

Location:  Brandberg, Namibia.

Specimen Code:  NBB 150


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