orthorhombic pyroxene
Alternative form of noil
In a detractive manner.
(mineralogy) Any of a group of minerals having the general formula XYSi₂O₆ in which X is iron or magnesium and Y is iron or manganese.
Third-person singular simple present indicative form of change like the seasons
地質学者は偏光下の薄片で、一般式がXYSi2O6（Xは鉄またはマグネシウム、Yは鉄またはマンガンである）という直方晶系の輝石を確認した。
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