Quartz Crystal with Schorl - NER 012

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)  
                                      NaFe²⁺₃Al₆Si₆O₁₈(BO₃)₃(OH)₄  (schorl)
                                      KAlSi₃O₈  (feldspar) 

Hardness on Mohs Scale:  (quartz)  7                 
                                          (schorl)  7.5
                                           (feldspar)  6 - 6.5

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NER 012

US $ SOLD