Fluorite with Sphalerite and Quartz

This great Fluorite miniature, from the historic medieval mining district around Freiberg in Saxony, Germany, is composed of waxy, grey-green Fluorite crystals with whitened centres, sharp, well-defined edges and relatively smooth uninterrupted square faces.  Scattered over these are beautiful sub-mm Sphalerite crystals of bright metallic silver with occasional peacock-blue iridescence.  One Fluorite crystal is highly distorted from the regular cube to a 1.4 x 0.6 x 0.4 cm rectangular prism.  A 7 x 5 mm cluster of lustrous black Sphalerite crystals features on the base.  A Fluorite showing several fascinating crystal forms from Freiberg.