enargite

例句：

1. 1.Enargite is a mineral that is commonly found in riverbeds and streams.
   萤石是一种在河床和溪流中常见的矿物。
2. 2. The enargite deposits are important for the local economy.
   萤石矿藏对当地经济至关重要。
3. 3. The enargite mine has been closed due to environmental concerns.
   由于环境问题，萤石矿已经关闭。