Quartz Crystal Cluster NER 007

Unusual quartz crystal cluster

Measurements:  115 x 94 x 92 mm 

Description:   A cluster of clear quartz crystals on a quartz matrix, partly covered with feldspar and minute schorl crystals.

The two largest terminations have a few small nicks, while two other crystals have contact marks.

An unusual and nice specimen from the Erongo mountains that displays very well on a flat surface.

Weight of Specimen:  718 g

Chemical Composition:  SiO (quartz)                 
                                        KAlSi3O8  (feldspar)   
                                        NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)
Hardness on Mohs Scale: 
 (quartz)  7                                                                
                                           (feldspar)  6 - 6.5    
)  7.5        

Location:  Erongo, Namibia.

Specimen Code:  NER 007

US $ 265

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