Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. mineral

Narrower term/s

• lodestone

Anotations

Scope note:

Black opaque mineral composed of ferro-ferric oxide that is strongly magnetic; a common mineral in large deposits in Sweden, Norway, the Urals, Italy, Switzerland, Australia, Brazil, United States, and Canada. Magnetite is brittle and fractures unevenly. When it possess a polarity, magnetite is called lodestone. Magnetite was used in antiquity for jewelry, amulet beads, seals and as a substitute for black pearls. It is also used as a black pigment in paints, linoleum, ceramic glazes, and glass.