felsitic

例句：

1. 1. The mine is producing a significant amount of felsitic.
   这个矿场正在生产大量的铁矿。
2. 2. The felsitic has been used in various industries for decades.
   这种铁矿已经被用于各种行业几十年了。
3. 3.The felsitic is mined from the ground and then processed into steel.
   这种铁矿是从地下开采出来的，然后被加工成钢铁。