Iron oxide minerals are found in rocks around the globe. Some are magnetic, and some of them rust—especially when exposed to water and oxygen. These characteristics provide clues about the ...

Metamorphosed banded iron formation from southern Wyoming showing deformation and folding. The rock is approximately 2.7 billion years old. Dark bands are iron oxides (magnetite, hematite) and ...

"Iron oxides trap phosphorus because they have different ... Because phosphorus is a finite resource—mined from phosphate ...

“These rocks formed in the ancient oceans ... “There’s some very interesting work on the properties of iron oxides at those conditions,” Keller said. “They can become highly thermally ...

At 2.5 billion years old and weighing in at 2.5 tonnes, the banded iron formation is so heavy that Museum engineers had to reinforce the floor underneath it in Hintze Hall. 'The rock tells a ...

Yet cutting through the landscape are countless orange-stained streams, colored by the iron oxide pollution that has ... into contact with exposed mining rocks. Rivers can be cleaned up by ...

The scientists proceeded to mix ferric nitrate with potassium hydroxide, creating a hard iron oxide mineral called nanocrystalline ferrihydrite, which occurs naturally in soil and water.

At some point, iron within rocks on Mars reacted with water or water and oxygen in the air, creating iron oxide — much in the same way rust forms on Earth. Over billions of years, the iron oxide ...

A new study suggests iron-rich ancient sediments may have helped cause some of the largest volcanic events in the planet's history. Visually striking layers of burnt orange, yellow, silver, brown ...

The rock is approximately 2.7 billion years old. Dark bands are iron oxides (magnetite, hematite) and yellow-orange bands are chert with iron oxide inclusions (jasper). (Photo by Linda Welzenbach ...