haematite
/ˈhiːmətʌɪt
/(US hematite)
noun
A reddish-black mineral consisting of ferric oxide. It is an important ore of iron.The red sandstone is made up of quartz grains coated with hematite, an iron oxide mineral that gives the stone a red colour....
- Like hematite, some goethite is pseudomorphic after a rhombohedral carbonate mineral.
- The fluids that precipitated the veins were a likely source for some of the iron that formed the hematite.
Origin
Late Middle English: via Latin from Greek haimatitēs (lithos) 'blood-like (stone)', from haima, haimat- 'blood'.