Geologist Gerard Bond noticed that some of the sediment grains were stained with ironoxide, evidence that they originated in locales where glaciers had overrun outcrops of red sandstone.
地质学家杰拉德·邦德注意到，一些沉积物颗粒被氧化铁染色，这表明它们起源于冰川覆盖红砂岩露头的地方。
2
Hematite is an ironoxide that is deep red in color.
赤铁矿是一种具有深红颜色的氧化铁。
3
The surface charges of several types of redironoxide pigment have been determined by using thermoelectrieity analysis.