Fluorite Crystals on Matrix – NERF 031

Five different minerals, with fluorite crystals on matrix





Measurements:  38 x 22 x 14 mm

Description:  The specimen consists of a total of five different minerals. Small fluorite crystals, the largest 10 x 10 mm, sit on a matrix of very small mica, schorl and quartz crystals, with the largest fluorite crystal having bits of hyalite opal on it.  

Some of the crystals on the edges of the specimen, have some damage.

Weight of Specimen:  12.7 g  

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

Hardness on Mohs Scale:  (fluorite)  4(schorl)  7.5 
                                           (muscovite
2-2.5
                                           (quartz)  7
                                           (opal) 
5.5-6 

Location:  Erongo Region, Namibia.

Specimen Code:  NERF 031

US $ SOLD






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