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A coarse-grained crystalline rock composed mostly of plagioclase.
Classification of AnorthositoidHide
Rock ➔ Igneous rock ➔ Normal crystalline igneous rock ➔ Coarse-grained ("plutonic") crystalline igneous rock ➔ Anorthositoid
Sub-divisions of AnorthositoidHide
Mineralogy of AnorthositoidHide
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: