franklinite

American  

[frangk-li-nahyt] / ˈfræŋk lɪˌnaɪt /

noun

1. 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.

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franklinite British  

/ ˈfræŋklɪˌnaɪt /

noun

1. 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

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Etymology

Origin of franklinite

1810–20, named after Franklin, New Jersey, where it is found; -ite ¹

Example Sentences

Lawmakers this week introduced measures declaring the Io moth the state moth, Franklinite the state mineral and Thomas Alva Edison the state inventor.

From Washington Times

Franklinite is named after the mineral-rich town of Franklin in Sussex County.

From Washington Times

Associated with franklinite at Franklin Furnace, and found also at some other localities, is another member of the spinel group, namely, gahnite or zinc-spinel, which is a zinc aluminate, ZnAl2O4, with a little of the zinc replaced by iron and manganese.

From Project Gutenberg

This extremely white and fine pigment is prepared by the roasting and sublimation of franklinite, zincite, and other zinc-bearing ores largely found in New Jersey.

From Project Gutenberg

Herring was another American who invented celebrated safes, made with a boiler-iron exterior, a hardened steel inner safe, with the interior filled with a casting of franklinite around rods of soft steel.

From Project Gutenberg