Ecdemite
0549 Ecdemite, Passa Limani Cove slag locality (Pacha Limani Cove slag locality), Passa Limani area, Lavrion District slag localities, Lavrion (Laurion; Laurium) District, AttikĀ” (Attica; Attika) Prefecture, Greece
Ex Joan Lamond 3719, received in a swap with Andre Heyninck (Belgium). Tiny yellow plates in slag. Also present are sprays of white acicular crystals labelled (erroneously I think) as calcite.