Gieseckite
Pronunciation : Gie"seck*ite
Part of Speech : n.
Etymology : [Named after Karl Giesecke.] (Min.)
Definition : Defn: A mineral occurring in greenish gray six-sided prisms, having a greasy luster. It is probably a pseudomorph after el?olite.
Source : Webster's Unabridged Dictionary, 1913
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