kerargyrite

例句：

1. 1. This mineral is commonly found in riverbeds and can be used as a pigment.
   这种矿物通常存在于河床中，可以用作颜料。
2. 2.The iron oxide layer on the surface of the metal is what gives it its rusty appearance.
   金属表面的铁氧化物层是它出现锈迹的原因。
3. 3. The kerargyrite deposits are important for the local economy and provide a significant source of income for the community.
   这些铁矿资源对当地经济至关重要，为社区提供了重要的收入来源。