Quartz Crystal with Schorl – BARG 042

Quartz crystal group with schorl needles inside and on them

Measurements:  73 x 44 x 35 mm

Description:  A group of quartz crystals with bits of feldspar on some surfaces, as well as small needles in and on some of the crystals. The largest crystal has bits of hematite on the surface, as well as a few minute, brownish balls of hematite.     

All the terminations have nicks.

Weight of Specimen:  66.0 g   

Chemical Composition: 
 SiO2  (quartz)  
                                       NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl) 7.5

Hardness on Mohs Scale:  (quartz)  7
                                          (schorl
)  7.5 

Location:  Erongo, Namibia.

Specimen Code:  BARG 042

US $ SOLD
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