(One of the most attractive minerals out there!)
Magnetite can act magnetic....(duh)
CHEMISTRY OF MAGNETITE
- Chemical Formula -- Fe3O4
- Chemical Name -- Iron Oxide
- Chemical Composition -- Iron and Oxygen
- Crystal Type -- Octahedral (8 sided) or Dodecahedral (12 sided)
Magnetite can appear crystallized in 8-sided and 12-sided shapes.
- Color -- Black
- Density -- 5.1 to 5.2 g/cm3
- Luster -- Metallic
- Hardness -- 5.5 to 6.5
- Streak -- Black
- Fracture -- Conchoidal Fracture
- Unique Characteristics -- Its not magnetic naturally, but has a tendency to act magnetized. If it is found naturally magnetic, it's known as Lodestone.
Lodestone is naturally magnetic
- Magnetite is a nonsilicate
- Magnetite is classified as an oxide due to the presence of oxygen in its composition
- Most oxides have ionic bonds, and oxygen as one of the components their chemical structure
- Other minerals in this group are Corundum, Ruby and Saphire
USES AND IMPORTANCE
- Magnetite is used in magnets, paint, ink, paper, and cosmetics as well as steel
- Magnetite isn't a gemstone
- Has to be processed to get steel which is used in building materials.
- Without magnetite, we'd lose our most popular magnetic material, with just pure iron, cobalt, and nickel left as magnetic elements.
- Magnetite is the most abundant metal oxide found in igneous rocks
- It is found naturally in France, Germany, Norway, Finland, Brazil, and in Michigan and Utah in the United States
- It is mined
Magnetite is found around the world!
The Mineral and Gemstone Kingdom
Pellant,Chris. Eyewitness Handbook of Rocks and Minerals. NewYork: DK Publishing, 1992.