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Wolframite (huebnerite, ferberite)

A black, very dense iron-manganese tungstate, the main tungsten ore of granite-related quartz veins. The manganese-rich end-member is huebnerite, the iron-rich one ferberite.

Composition

(Fe,Mn)WO4; monoclinic; about 76% WO3.

Sources

In the atlas

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