Fluorite Crystals on Chalcedony  –  VAR 030

Measurements:  142 x 100 x 30 mm

Description:  A fairly big (trimmed) specimen of purple fluorite crystals on chalcedony. Most of the crystals (of which the largest one is 17 x 16 mm) have a coating of feldspar on some surfaces. 

Some of the fluorite crystals are damaged.

Weight of Specimen:  588 g

Chemical Composition:  CaF₂  (fluorite)
                                       SiO₂  (chalcedony)   
                                        KAlSi₃O₈  (feldspar) 
                                   
Hardness on Mohs Scale:  (fluorite)  4
                                          (chalcedony)  7 
                                          (feldspar)  6 - 6.5

Location:  Okorusu mine, Otjiwarongo, Namibia, Africa.  

Specimen Code:  VAR 030     

US $ 180