灰かい曹そう長ちょう石せきじ字FuriganaMeanings1nounoligoclasemineralogy›A mineral name; a type of plagioclase feldspar. Used in geological and mineralogical contexts.灰かい曹そう長ちょう石せきは斜しゃ長ちょう石せきの一いっ種しゅで、ナトリウムを多おおく含ふくむ。Oligoclase is a type of plagioclase feldspar that is rich in sodium.
