Very nice shell screen from old mining .
Shell orifice is an aggregate with alternating proportions of
Zinc blende = sphalerite, wurzite, calcite and galena = galenite
However, the beautiful, metallic high-gloss finish can only be seen on polished surfaces – the natural side can be seen in the last photos.
Shell screens are only found at very few sites worldwide.
This piece was made many decades ago in the former mining district of
Bleiberg/Kreuth in Carinthia — Austria found.
Weight: 975 g
Dim.: 15 x 7 x 6 cm