Hematite

Formula

Fe2O3

Structure

Non-silicate

Crystal System

Crystal system: trigonal (-)

Physical Properties

Colour in hand specimen: black, steel-grey and bright to dull red 
Streak: cherry-red 
Cleavage: none 
Hardness: 5-6

Optical Properties

Colour in plane polarised light: opaque; blood-red in very thin splinter 
Pleochroism: none 
Relief: high

Mineral Specimens

M500 Hematite 
Cumberland 
A concretionary mass showing concentric and radial structure 
Silvery black with a red streak 
Oxidised to dark brown-red in places 
Metallic lustre

Mineral Name

hematite
iron oxide
opaques
Hematite