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Magnetite - Wikipedia
5.6 Mineral Properties – Physical Geology – H5P Edition V1.1
File:Magnetite-k326a.jpg - Wikimedia Commons
Magnetite: The mineral Magnetite information and pictures
Franklinite with magnetite from Franklin, New Jersey, USA. Franklinite and magnetite are both members of the spinel group. Magnetite is iron oxide, and franklinite is primarily a zinc-iron oxide. Magnetite is common