Where does “мумиё” come from?

мумиё (Russian) comes from Tajik мумиё, from Classical Persian مُومِیَا.

мумиё (Russian): mumijo, natural shilajit, mineral tar, mineral pitch, mountain balsam (mumijo is an organic resinous substance found at high altitudes in the Himalayas and used in traditional medicine to treat a variety of diseases. It is a dark brown or black tarry deposit in rock crevices.)