How might Mars be different if its surface did not contain so mush iron?

Answer 1

If Mars had significantly less iron on its surface, its geological and atmospheric characteristics would likely be quite different. The planet might exhibit a less reddish hue, which is primarily due to iron oxide (rust) in its soil. Additionally, reduced iron could impact the planet's magnetic field and geological activity, potentially resulting in a less dynamic environment. This could also affect the planet's ability to retain an atmosphere and support any form of life.