精せい鉱こう

noun

refined ore; ore concentrate; dressed ore

Technical term in mining and geology for ore that has been processed to increase its mineral content.

• 選せん鉱こう工こう程ていを経へて、精せい鉱こうが得えられる。

  After the beneficiation process, refined ore is obtained.

• この鉱こう山ざんでは、銅どうの精せい鉱こうを生せい産さんしている。

  This mine produces copper concentrate.