The principal molybdenum ores generally classified in this heading are :(a) Molybdenite, molybdenum sulphide. (b) Wulfenite, lead molybdate. The heading also covers roasted molybdenite concentrates ( technical molybdic oxide , obtained by merely roasting molybdenite concentrates). The heading excludes molybdenite prepared for use as a lubricant (heading 25.30).
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