Hematite (also haematite) is a natural mineral and iron oxide compound.
It's available in abundance around the world. It's composed of 70% iron 30% oxygen.
The red hue seen on Mars comes from fine grains of hematite that blow around during dust storms.
Although relatively hard, hematite is brittle so can chip or shatter if knocked or dropped.
This steely-grey coloured metallic mineral often occurs with other iron minerals such as goethite and magnetite.
GREEN QUARTZ
