Why did rocks from the Mars Perseverance rover surprise scientists? - The Jerusalem Post

Why did rocks from the Mars Perseverance rover surprise scientists?  The Jerusalem PostThe Sands Of Mars Are Green As Well As Red, Rover Perseverance Discovers  Astrobiology NewsLife on Mars clue after Nasa discovery  Evening StandardNASA's Perseverance Rover Discovers Rocks Shaped By Water On Mars  NDTVRock-hunting NASA rover reveals Martian craters surprising geology  Geo News