Fluorite, Hyalite Opal and Mica – NAM 010

Fluorite and hyalite opal on matrix rich in mica and schorl

Measurements:  78 x 70 x 50 mm

Description:  Fluorite and hyalite opal sits on a matrix rich in mica and schorl.

The fluorite crystals have a few flaws. 

The hyalite opal should fluoresce well under ultraviolet light.

Weight of Specimen:  122 g

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

Hardness on Mohs Scale:  (fluorite) 4    
                                           (basic opal)  
5.5 - 6 
                                    (schorl)  7.5 

Location:  Erongo, Namibia.

Specimen Code:  NAM 010

R 500


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