RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY
Haematite. This iron oxide (Fe2O3) mineral ore is seen in its betryoidal (grape-like) form called 'kidney ore'. Here it is black, although haematite's colour can vary from black to red to steel grey. It is a common and widely distributed mineral and it is a major ore of iron.
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