Fluorite Crystals on Muscovite and Feldspar - NERF 036

Green fluorite crystals with purple edges, on muscovite and feldspar


Measurements:
 54 x 30 x 20 mm

Description:  Small green fluorite crystals (up to 4 mm on edge) with purple edges, rest on a soft matrix of feldspar and muscovite. There are a few small schorl crystals embedded in the matrix.

There appears to be no damage to the fluorite crystals.

Weight of Specimen:  28.1 g

Chemical Composition:  CaF2  (fluorite) 
                                   KAl2(Si3Al)O10(OH,F)2  (muscovite) 

                                   KAlSi3O8  (feldspar) 

Hardness on Mohs Scale:  (fluorite)  4 
                                      (muscovite)  2-2.5

                                      (feldspar)  6 - 6.5

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NERF 036

US $ 45




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