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noun

pyrolusite

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Pyrolusite (noun) means a dark mineral made of manganese dioxide, mined as a major source of manganese.

noun
1
A dark mineral made of manganese dioxide, mined as a major source of manganese.
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What is the meaning of pyrolusite?
"pyrolusite" (noun) means a dark mineral made of manganese dioxide, mined as a major source of manganese.
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