Smoky Quartz and Schorl - NER 028

Smoky quartz and schorl crystals

Measurements:  68 x 53 x 28 mm

Description:  A cluster of (mostly) dark smoky quartz crystals, along with a few schorl crystals. Some of the smoky quartz crystals have bits of hyalite opal on them. Bits of feldspar are scattered among the crystals.

Some of the crystals have nicks and flaws.

Weight of Specimen:  55.0 g

Chemical Composition:  SiO (quartz)  
                                       NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)
                                       SiO2•1.5(H2O)  (opal)                                                                           KAlSi3O (feldspar) 
Hardness on Mohs Scale: 
  6 - 6.5

Location:  Erongo Mountain Pegmatites, Namibia.

Specimen Code:  NER 028

US $ 75


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