The role of bacteria in the origin of iron formations (IF) remains unclear because no direct evidence for their involvement exists. This study shows that spherical siderite in deep-water IF ...

In a nutshell NASA’s Curiosity rover discovered large deposits of siderite, a type of iron carbonate, in Gale Crater, offering the strongest in-situ evidence yet of an ancient carbon cycle on ...

No siderite in some ancient soils therefore implied lower levels of carbon dioxide. Ohmoto and his associates, however, looked at four, rather than one, parameters involved in siderite formation.

It's the first in situ evidence of the carbon cycle on Mars, and it represents an important clue about whether or not the red planet could ever have supported life.

No siderite in some ancient soils therefore implied lower levels of carbon dioxide. Ohmoto and his associates, however, looked at four, rather than one, parameters involved in siderite formation.

A NASA rover taking rock samples on Mars has uncovered a plentiful mineral that was invisible to orbiters studying the Red Planet from space. Scientists say the discovery of siderite, a type of ...

A photomosaic taken by the Curiosity Rover on April 30, 2023 at the Ubajara drill site in Gale Crater, Mars. Rock powder samples drilled here contained substantial amounts of siderite (an iron ...

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Scientists have pondered why Mars seemed to be missing sufficient carbonates indicative of its warm, wet past. Now, NASA’s Curiosity rover may have just solved the mystery.

A 310-million-year-old horseshoe crab’s brain was preserved in clay, thanks to an uncommon fossilization process that protected the fragile neural tissues.

There, embedded in the bedrock, the Curiosity rover has identified a mineral called siderite that can only have formed from the precipitation of carbon from the Martian atmosphere.