The collection or removal of ferrous material by use of magnetism
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Category: <span>M</span>
A random concentration of iron rich ore
A light, silvery-grey and very common metal. Symbol, Mg. Its principal ore is magnesite and dolomite
The concentration of minerals by density within a magmatic system, prior to cooling
The extremely hot volcanic fluid which forms rock when cooled
Dark igneous rocks typically high in iron and magnesium
A prefix meaning large, the opposite of micro
A shiny silver coloured liquid metal at room temperature. Symbol Hg. Mercury is extremely toxic and can be lethal in high human concentrations
A measure of an objects attraction to a magnet
An initial refinement of ore produced at a smelter, usually a mix of metal and sulphur, ideal for transportation but requiring further refinement.