Fluorite, Hyalite Opal and Muscovite - NERF 009

Green fluorite crystals with muscovite, hyalite opal and schorl

Measurements:  34 x 28 x 25 mm

 A group of green fluorite crystals with bits of purple colouring and darker interiors, with (what appears to be) hyalite opal, muscovite and a few small schorl crystals. 

The specimen has a few small nicks. 

This type of specimens are currently very difficult to obtain.

Total Weight of Specimens:  20.0 g 

Chemical Composition:   CaF2  (fluorite) 
                                        KAl2(Si3Al)O10(OH,F)2  (muscovite
                                        SiO2•1.5(H2O)  (opal)                                                                                                          NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)  

Hardness on Mohs Scale:  (fluorite)  4                                                                                                                             (muscovite2-2.5
                                          (opal)  5.5-6    

Location:  Erongo Region, Namibia.

Specimen Code:  NERF 009


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