Fluorite, Albite and Herderite - NERF 032

Measurements:  76 x 53 x 40 mm

Description:  A specimen consisting of mostly light green fluorite crystals, partially coated with albite (and possibly feldspar) and with a few small, yellowish herderite crystals up to about 1.5 mm long. Herderite is seldom found in the Erongo region.

Some of the fluorite crystals have small nicks.

Total Weight of Specimens:  164.6 g 

Chemical Composition:   CaF₂  (fluorite)
                                        NaAlSi₃O₈  (albite)  6 - 6.5
                                        CaBePO₄F  (herderite)  5 - 5.5

Hardness on Mohs Scale:  (fluorite)  4
                                          (albite)  6 - 6.5
                                          (herderite)  5 - 5.5

Location:  Erongo Region, Namibia.

Specimen Code:  NERF 032

US $ 75