- a mineral of the spinel group, an oxide of zinc, manganese, and iron, occurring in black octahedral crystals or in masses: formerly mined for zinc.
Origin of franklinite
1810–20, Americanism; named after Franklin, New Jersey, where it is found; see -ite1
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Examples from the Web for franklinite
- a black mineral consisting of an oxide of iron, manganese, and zinc: a source of iron and zinc. Formula: (Fe,Mn,Zn) (Fe,Mn) 2 O 4
C19: from Franklin, New Jersey, where it is found, + -ite 1
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