Fluorite with Sphalerite and Ankerite Beaumont (Allenheads) ...
Description: Fluorite with Sphalerite and Ankerite Beaumont (Allenheads) Mine, Diana Vein, East Allendale, Northumberland, England, UK 10 cm across A mound of dark gray silicified limestone covered with numerous pale lavender twinned fluorite crystals up to 1.7 cm with associated sphalerite and ankerite. Specimen was recovered ca. 1971.