pyritic sulfur

例句：

1. 1.Pyrite is a common mineral found in many places around the world.
   黄铁矿是一种在世界许多地方都能找到的常见矿物。
2. 2.The pyrite mine was closed due to safety concerns.
   由于安全问题，那个黄铁矿矿场被关闭了。
3. 3.The smelting process uses pyrite as a raw material.
   冶炼过程使用黄铁矿作为原料。