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A field term for coarse-grained crystalline normal igneous rocks with <90% mafic minerals and the felsic minerals containing <20% quartz, <10% felspathoids and plagioclase being >65% of total feldspars. The plagioclase is sodium rich, in contrast to gabbroids, which have calcium rich plagioclase. The group includes diorite, quartz diorite, quartz monzodiorite, foid- bearing diorite, foid- bearing monzodiorite and monzodiorite.
Classification of DioritoidHide
Sub-divisions of DioritoidHide
Mineralogy of DioritoidHide
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: