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Pyrolusit

m
chem. polianite (min.); pyrolusite; black manganese dioxide
industr., construct., chem. manganese dioxide; manganese dioxide mineral
mineral. battery manganese
mining. brown stone
Min. Pyrolusit m
chem. manganese dioxide; manganese peroxide; min. pyrolusite; polianite
Pyrolusit
: 2 phrases in 1 subject
Mining2

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