oligoclase
A mineral name; a type of plagioclase feldspar. Used in geological and mineralogical contexts.
Oligoclase is a type of plagioclase feldspar that is rich in sodium.
A mineral name formed from 灰, representing calcium, 曹, representing sodium through 曹達, and 長石 “feldspar.” It refers to oligoclase, a plagioclase feldspar containing both sodium and calcium.