金きん鉱こう脈みゃく

noun

gold vein; gold-bearing reef

Refers to a natural deposit of gold within rock, often used in mining and geological contexts.

• この山やまでは金きん鉱こう脈みゃくが発はっ見けんされた。

  A gold vein was discovered in this mountain.

• 金きん鉱こう脈みゃくを採さい掘くつするには大だい規き模ぼな設せつ備びが必ひつ要ようだ。

  Large-scale equipment is needed to mine a gold vein.