"The last four months have been a whirlwind for the science team, and we still feel that Witch Hazel Hill has more to tell us ...

prompting scientists to call it a “scientific gold mine.” In the last four months alone, the rover has collected samples from five distinct rocks, examined seven others, and used its laser ...

Unlike alluvial gold, which is found as very small flakes on riverbanks, gold-bearing rocks have to be dug out of the ground. We're after pure gold, but rock that contains gold also includes lots ...