For the first time, researchers have found evidence that people were using red ochre in West Africa ... A natural pigment containing iron oxide and clay, the reddish material was used by ...

Mars’s red dust may contain ferrihydrite, an iron mineral that forms in water. This suggests ancient Mars had water for ...

So they needed a cheap way to protect the barns' wood. They mixed skimmed milk, lime, and red iron oxide to make a red, plastic-like coating. The coating protected the wood and kept barns warmer ...

The colour of Mars has been hotly debated over the years, as has whether there has ever been life on the planet ...

Well that’s ruined all my lectures! I’ve spent years talking about space and a go to fact is the red colour of Mars. It’s ...

Until now, scientists believed that hematite, a dry iron oxide, was responsible for the planet's red color. However ... likely due to the non-linear mixing with basalt powder. The band at 3 µm could ...