Schorl, Smoky Quartz and Hyalite Opal – NERS 015

Stunning specimen: schorl crystal with smoky quartz and hyalite opal

Measurements:   47 x 36 x 35 mm

Description:  A stunning specimen consisting of a schorl crystal with a group of light smoky quartz crystals, partially embedded in the schorl crystal, and hyalite opal coating parts of the specimen. 

The back of the schorl crystal has large contact and pressure marks, while some of the smoky quartz crystals on the edges have a few nicks.

Weight of Specimen:  57.1 g

Chemical Composition:  NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)
                                       SiO2  (quartz)
                                        SiO2•1.5(H2O)  (opal) 

Hardness on Mohs Scale:  (schorl)  7.5                                         
                                          (quartz)  7  
                                           (opal)  5.5 - 6 

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NERS 015

US $ 120

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