Quartz, chalcopyrite, Cavnic, Romania, 183 grams
Interesting piece bearing chalcopyrite crystals and quartz crystals, themselves covered by a fine calcite crystallization. The matrix is made of sphalerite and massive galena.It comes from the Cavnic mine, Maramures, Romania.This specimen measures 5.6 cm long by 5.1 cm wide and 6.3 cm at the...