Fluorite, calcite, Minerva n°1 Mine, USA, 307 grams
Yellow fluorite at the core and purple on the surface, covered by dog-tooth calcite.This piece is from Minerva Mine No. 1, Cave in Rock District, Hardin County, Illinois, USA.It measures 8.6 cm long by 5.5 cm wide and 5.1 cm at its thickest.Its weight is 307 grams.Additional photos and online...