Odložene so na erodirane starejše anizijske, skitijske, permijske in karbonske kamnine, ki so epigenetsko orudene (Mlakar, 1967; Placer & Čar, 1977; Čar 1985; Čar, 1998).
They were deposited on partly eroded older Anisian, SČthian, Permian and Carboniferous rocks that were epigenetically mineralized (Mlakar, 1967; Placer & Čar, 1977; Čar 1985; Čar, 1998).