TL;DR: Anorthite (Plagioclase) is a main entry in the 外星矿物知识引擎 database.
Anorthite is the most abundant mineral on the lunar surface, forming the bright highland crust. It is the primary feedstock for aluminum extraction via molten electrolysis. The lunar highlands are essentially a vast anorthite quarry.
Occurrence
Dominant mineral in lunar highlands (anorthosite crust); 80%+ of highland regolith
Significance
Source of aluminum, silicon, calcium, and oxygen; most abundant lunar mineral; feedstock for aluminum production
Source
Apollo highland samples, Luna samples, Chang'e-5