2 cleavages , with an angle of cleavage intersection about 120 and 60 . 3 cleavages , intersecting at angles that are not 90 . Crystal faces do not penetrate into the body of the crystal, whereas cleavages, as parallel sets of cracks, can.
Cleavages can form steps on the outside of the crystal, each parallel to the cleavage direction.
How crystal habit affects luster Earthy hematite is brick red and has non-metallic luster. The crystals are so small that they are partially transparent. Light passing through the grains changes its color to red. The microscopic crystals scatter the light in all directions, giving the sample a dull appearance. Specular hematite is gray and has metallic luster.