Hematite is an iron oxide that is deep red in color.
赤铁矿是一种具有深红颜色的氧化铁。
2
A study of red granite reveals that the color_forming mineral in red granite is hematite.
通过对红色花岗岩的研究，发现红色花岗岩的成色矿物为赤铁矿。
3
The results showed that the main crystalline iron oxide minerals in the clay of red earth was goethite and hematite, but only goethite was detected in the clay of yellow soil.