Pollone mine, Valdicastello Carducci, Pietrasanta, Apuan Alps, Lucca Province, Tuscany, Italy - This is a VERY rare, lead sufosalt with moderately large crystals. The color is battleship gray, with a satiny luster.  This species is not often seen in dealers stocks or even in museums ! This crystal is 1.4x0.9x0.5 cm and shows nice termination and luster. Super rare specimen.