元げん素そ鉱こう物ぶつ

noun

native element mineral; native element

Technical term in mineralogy for a mineral composed of a single chemical element in its natural form.

• 金きんや銀ぎんは元げん素そ鉱こう物ぶつの代だい表ひょう例れいです。

  Gold and silver are typical examples of native element minerals.