Dark igneous rocks typically high in iron and magnesium
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Category: <span>M</span>
A prefix meaning large, the opposite of micro
The collection or removal of ferrous material by use of magnetism
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
A term applied to a variety of minerals which occur as loose mixtures of clay, calcium carbonate, and carbon based materials in various stages of decomposition. It is frequently found in a hydrous state in subterraneous deposits. It is used for fertilizer and also in the beauty industry for its exfoliative properties
A deposit of sedimentary material which has settled underwater
Rock derived from recrystallization of limestone, metamorphisized through heat and pressure