Quartz Crystal with Schorl - NER 012

Quartz crystal with schorl

Measurements:  38 x 17 x 15 mm

Description:  A quartz crystal with partial coating of hematite and a small rainbow in the middle of its shaft, plays host to a few shiny schorl crystals and bits of feldspar.

The schorl crystals have quite a few nicks. The bottom of the quartz crystal has some damage where it parted from its matrix.

Weight of Specimen:  8.3 g 

Chemical Composition:  SiO2  (quartz)  
2+3Al6Si6O18(BO3)3(OH)4  (schorl)
3O (feldspar) 

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

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NER 012



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