Ashley Cooper / Kidney ore of haematite at Florence haematite mine near Egremont West Cumbria, England, UK, July.

Ashley Cooper / Sinkhole in a back garden in Egremont Cumbria as a result of mining subsidence when an old mine shaft opened up, England, UK. June 2005

Philippe Clement / Hematite / haematite specimen, mineral form of iron oxide on white background

SINCLAIR STAMMERS / Fossils of Goniatites (extinct shelled cephalopods) These specimens are Devonian and preserved in haematite, they were found weathered out on desert surface in southern Morocco.

John Cancalosi / Calcite (Calcium carbonate, CaCO3) with haematite inclusions causing red colour. One of the most common and variable minerals on earth, used in building, metallugy, fertilisers and the chemical indust...