Magnetite

(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.

PROPERTIES

  • 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

MINERAL GROUP

  • 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.

LOCATION

  • 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!

RESOURCES

Transtutors

http://www.transtutors.com/chemistry-homework-help/s-and-p-block-elements/oxides.aspx

theImage

theimage.com/mineral/magnetite/index.htm

The Mineral and Gemstone Kingdom

www.minerals.net/mineral/magnetite.aspx

Mineralogy

www.webmineral.com/data/Magnetite.shtml

Oracle Thinkquest

http://library.thinkquest.org/05aug/00461/magnetite.htm

Pellant,Chris. Eyewitness Handbook of Rocks and Minerals. NewYork: DK Publishing, 1992.

Google Images



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