Hematite is found in the United States of America and is characterized by the following physical and chemical properties:

Physical properties

• The shape is laminar / tablet / cluster
• The group minerals oxides
  
• The scratch is light green / reddish brown
• Hardness 5 / 6
• The color is gray / steel
• Not radioactive
• dark
• Sparkle Metallic / Matte

Chemical properties

• Refractive index 2.94 / 3.22
• Density 3.5
• Hexagonal crystal system

• The chemical formula is iron dioxide