Anorthitic refers to a type of feldspar mineral, but there are several synonyms that can be used to describe it. These include plagioclase, albitic, and albite-rich. Plagioclase is a broader term that encompasses all feldspar minerals that form solid solutions between sodium and calcium. Albitic specifically refers to plagioclase minerals with a higher percentage of sodium than calcium. Albite-rich is also a term used to describe plagioclase minerals with a high concentration of albite. When describing anorthitic minerals, it is important to consider their specific properties and composition, as well as their classification within the category of feldspar minerals.