Franklinite

Franklinite is an oxide mineral belonging to the normal spinel subgroup`s iron (Fe) series, with the formula ZnFe3+2O4. As with another spinel member magnetite, both ferrous (2+) and ferric (3+) iron may be present in Franklinite samples. Divalent iron and/or manganese (Mn) may commonly accompany zinc (Zn) and trivalent manganese may substitute f....
Found on http://en.wikipedia.org/wiki/Franklinite

Franklinite

• (n.) A kind of mineral of the spinel group.
Found on http://thinkexist.com/dictionary/meaning/franklinite/

franklinite

(from the article `magnetite`) ...rocks and in granite pegmatites, stony meteorites, and high-temperature sulfide veins. The magnetite series also contains magnesioferrite ...
Found on http://www.britannica.com/eb/a-z/f/57

Franklinite

Frank'lin·ite noun (Min.) A kind of mineral of the spinel group.
Found on http://www.encyclo.co.uk/webster/F/72

Franklinite

Franklinite is a mineral found in Franklin, New Jersey, and used as an ore of zinc and manganese. With minor exceptions, the mineral is confined to Franklin, New Jersey. It has the formulae (Zn,Mn,Fe)(Fe,Mn)2O4 and a relative hardness of 7. Franklinite exhibits increased magnetism when it is heated.
Found on http://www.probertencyclopaedia.com/browse/HF.HTM
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