Magnetite

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Magnetite
Magnetite-118736.jpg
Magnetite frae Bolivie
General
Category
Formula
(repeatin unit)
iron(II,III) oxide, Fe2+Fe3+2O4
Strunz clessification 4.BB.05
Creestal seestem Isometric
Creestal cless Hexoctahedral (m3m)
H-M seembol: (4/m 3 2/m)
Space group Fd3m
Unit cell a = 8.397 Å; Z = 8
Identification
Colour Black, gray wi brounish tint in reflectit sun
Creestal habit Octahedral, fine granular tae massive
Twinnin On {Ill} as baith twin an composeetion plane, the spinel law, as contact twins
Cleavage Indistinct, pairtin on {Ill}, verra guid
Fractur Uneven
Tenacity Brittle
Mohs scale haurdness 5.5–6.5
Skinkle Metallic
Streak Black
Diaphaneity Opaque
Speceefic gravity 5.17–5.18
Solubility Dissolves slowly in hydrochloric acid
References [1][2][3][4]
Major varieties
Lodestane Magnetic wi definite north an sooth poles

Magnetite is a rock meeneral an ane o the main airn ures.

References[eedit | eedit soorce]

  1. Handbook of Mineralogy
  2. Mindat.org Mindat.org
  3. Webmineral data
  4. Hurlbut, Cornelius S.; Klein, Cornelis (1985). Manual of Mineralogy (20th ed.). Wiley. ISBN 0-471-80580-7.