Skrikerum Mine, Valdemarsvik, Ostergotland, Sweden
Type Location
Cu2Se
This is an extremely rare Copper Selenide from the type location. It is named after the Swedish chemist, Jons Jacob Berzelius, who discovered Selenium. The Berzelianite is found as very small gray metallic flakes in the black material, which does not really show in these photos. The white material is Calcite, but the black material is unidentified as is the small bit of red material.