zinkenite


From The Collaborative International Dictionary of English v.0.48:

Zinkenite \Zink"en*ite\ (-en*[imac]t), n. [From Zinken, director
   at one time of the Hanoverian mines.] (Min.)
   A steel-gray metallic mineral, a sulphide of antimony and
   lead.
   [1913 Webster]
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