Question

On minerals, such as haematite. There are only a few minerals in this category, occurring in many rocks and soils, and responsible for much of the natural red and yejiow colouration in the environment. Similar or weaker values are obtained for a group of minerals with the property of paramagnetism. There are a large number of these minerals that normally, but not always, contain iron, and are very common in rocks and soils. Examples are biotite and pyrite. Finally, there is a category of magnetism referred to as diamagnetism, which gives weak and negative values of

Answer 1

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