Magnetite Photos
Cochise College               
Photos of Minerals
Geology Home Page

Roger Weller, geology instructor

[email protected]     copyright 2010-R.Weller 

 
magnetite crystals-1
Magnetite is iron oxide with a ratio of iron to oxygen of 3 to 4.  It is a black mineral
and is strongly magnetic.  The most common crystal shape is the octahedron. 
Upon prolonged exposure to air and water, magnetite will oxidize to the
brownish-red hematite.
 

magnetite                                                                                                                             crystals2
Photo is copyright free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.