- a black oxide mineral, FeAl2O4, of the spinel group.
Origin of hercynite
< German Hercynit (1839), equivalent to Latin Hercyn(ia silva) the Hercynian Forest (referring to the Erz Mountains and other wooded ranges N of the Danube) + German -it -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hercynite
Some of the alumina and iron oxide may occasionally be chemically combined, so as to form an iron spinel, or hercynite.