最終更新日：2024/08/06

(mineralogy) A black monoclinic mineral containing iron, magnesium, niobium, oxygen, titanium, and tantalum.

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achalaite

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元となった辞書の項目

achalaite

noun

(mineralogy) A black monoclinic mineral containing iron, magnesium, niobium, oxygen, titanium, and tantalum.

The achalaite is a rare gemstone found only in a few regions.

意味（1）

(mineralogy) A black monoclinic mineral containing iron, magnesium, niobium, oxygen, titanium, and tantalum.