Now, a new study using data from NASA’s Curiosity Rover claims that sulfate layers on the Martian surface may have been hiding siderite—iron carbonate—from orbital survey missions.

Scientists say the discovery of siderite, a type of iron carbonate, could be crucial evidence to support the theory that Mars once had a thick carbon dioxide-rich atmosphere, allowing a warm ...

Rock powder samples drilled here contained substantial amounts of siderite (an iron carbonate mineral). The siderite played a role in ancient carbon cycling processes that impacted conditions at ...

Reuters A mineral known as siderite, discovered in rock samples collected by the National Aeronautics and Space Administration's (Nasa) Curiosity rover on Mars, provides compelling evidence of ...

NASA's Curiosity rover has unearthed compelling evidence of a past carbon cycle on Mars, discovering siderite within Gale Crater's ancient rocks. This finding suggests Mars once possessed a thick ...

WASHINGTON, April 17 (Reuters) - A mineral called siderite found abundantly in rock drilled by a NASA rover on the surface of Mars is providing fresh evidence of the planet's warmer and wetter ...

NASA Rover Finds Fresh Evidence of the Warm and Wet Past of Mars By Will Dunham WASHINGTON (Reuters) -A mineral called siderite found abundantly in rock drilled by a NASA rover on the surface of ...