粗そ鉱こう

noun

crude ore; raw ore

Technical term in mining and metallurgy for ore that has not yet been refined or processed.

• この地ち域いきでは粗そ鉱こうの採さい掘くつが盛さかんだ。

  Mining of crude ore is active in this region.

• 粗そ鉱こうを精せい錬れんして純じゅん度どの高たかい金きん属ぞくを得える。

  We refine raw ore to obtain high-purity metal.