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pyrolusite

f
chem. Braunstein m; Pyrolusit m; Mangandioxyd Min.; Polianit m; Mangandioxyd n
industr., construct., chem. Mangandioxyd Mangandioxid
life.sc. Batterie-Erz n; Pyrolysit m
min. pyrolusite f
chem. Mangandioxyd n; Braunstein m; Min. Pyrolusit; Polianit m