Magnetite is found in "Switzerland" / "Italy" / "Austria" and "America"

It is characterized by many physical and chemical properties, including:

Physical properties

• The shape is octagonal
• The group oxides
  
• Scratching black
• Hardness 5.5 / 6
• Color black / brown black
• Not radioactive
• dark
• Metallic sparkle

Chemical properties

• Density 5.2
• Eight-faceted / cubic crystal system
• The chemical formula is iron oxide