Fluorite, Quartz, Schorl and Muscovite Crystals on Matrix – NERF 037

Measurements:  52 x 36 x 30 mm

Description:  Small, green fluorite crystals share a schorl and mica matrix with quartz, small schorl and muscovite crystals. Some of the quartz crystals have schorl crystal inclusions. 

The largest quartz crystal has a nick close to the termination point, along one of the termination ridges. Some of the fluorite crystals have damage to their edges.

The specimen displays well on a flat surface, with all around being display sides.

Weight of Specimen:  44.3 g

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

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

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NERF 037  

US $ 15