vein-type pyrite deposit

例句：

1. 1. The vein-type pyrite deposit is a significant sourceof gold in the region.
   脉型黄铁矿矿床是该地区金的重要来源。
2. 2. Thevein-type pyrite deposit has beenmined for centuries due to its highgold content.
   由于其高含金量，脉型黄铁矿矿床被开采了数百年。
3. 3. The vein-type pyrite deposit is considered a valuable resource formining and metallurgy.
   脉型黄铁矿矿床被认为是采矿和冶金的宝贵资源。