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Peridotites are an ultramafic rock containing more than 40% olivine.
Classification of PeridotiteHide
Modal classification of ultramafic rocks (after Streckeisen, 1973)
Sub-divisions of PeridotiteHide
Mineralogy of PeridotiteHide
Essential minerals - these are minerals that are required within the classification of this rock:
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Accessory minerals - these are minor components, often far less than 1% of the total mineral material: