hematitepig iron

例句：

1. 1. Hematite is a common mineral foundin many soils.
   赤铁矿是一种在许多土壤中常见的矿物。
2. 2. Thehematite mine islocated in the heart of themountain range.
   赤铁矿矿位于山脉中心。
3. 3. Iron ore is extracted from hematite by crushing and grinding.
   铁矿石通过破碎和磨碎从赤铁矿中提取出来。