Olivine

The mineral olivine is a magnesium iron silicate with the formula (Mg,Fe)2SiO4 in which the ratio of magnesium and iron varies between the two endmembers of the series: forsterite (Mg-rich) and fayalite (Fe-rich). It gives its name to the group of minerals with a related structure (the olivine group) which includes monticellite and kirschsteinite. Olivine occurs in both mafic and ultramafic igneous rocks, and as a primary mineral in certain metamorphic rocks. It is one of the most common minerals on Earth.

Related Topics:
Mineral - Magnesium - Iron - Silicate - Forsterite - Fayalite - Monticellite - Kirschsteinite - Mafic - Ultramafic - Igneous rock - Metamorphic rock

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