Fluorite and Muscovite Crystals on Matrix – NERF 016

Fluorite and muscovite crystals on matrix





Measurements:  40 x 25 x 15 mm

Description:  A few green fluorite crystals with colour zoning due to temperature changes (when the crystals formed), sit on a feldspar matrix, together with mica crystals.

Weight of Specimen: 13.9 g

Chemical Composition:  CaF2  (fluorite)
                                        KAlSi3O (feldspar) 

                                        KAl2(Si3Al)O10(OH,F)2  (muscovite)

Hardness on Mohs Scale:  (fluorite)  4
                                           (feldspar)  6 - 6.5
                                           (muscovite)  2-2.5

Location:  Erongo Region, Namibia.

Specimen Code:  NERF 016

US $ 10

 

 

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