Fluorite with Sphalerite, Quartz and Pyrite

A great display specimen-rich in purple Fluorite crystals to over 1 cm across from the famous Trevaunance mine at St Agnes, Cornwall, England.  The Fluorite crystals show both cubic and tetrahexahedron habits and grow over a bed of greenish-grey micro-crystalline Chlorite covering a matrix of grey metamorphosed killas.  Pale greenish blocky Fluorite and black Sphalerite crystals are also distributed across the display surface, with anhedral Sphalerite and Pyrite on the base.