Fluorite Crystal Group on Feldspar – NERF 022

Fluorite crystal group on feldspar






Measurements:  
50 x 52 x 42 mm

Description:  A group of (mostly gemmy) green fluorite crystals, on a chunk of feldspar, with bits of schorl in it.  There is also some iron oxide on the feldspar. 

Interesting pattern on one of the fluorite facets (see photograph on right), pressure marks and a few minute nicks visible.  

A lovely specimen that displays well!

Weight of Specimen:   100.5 g

Chemical Composition:  CaF2  (fluorite)
                                    KAlSi3O8  (feldspar)                                                                      NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)

Hardness on Mohs Scale:  (fluorite)  4
                                      (feldspar)  6 - 6.5
                                      (hyalite opal)  5.5 - 6
                                      
(schorl)  7.5

Location:  Erongo Region, Namibia.

Specimen Code:  NERF 022

US $ 55

 

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