I just saw this post of a new discovery on Mars by the new Rover named Perseverance.
From what I know about minerals; 80% of all minerals that are blue or green have some relationship to copper.
Assuming that the light spectrum of Mars is showing the true color, I would say this is a copper meteorite. On Earth copper falls into the atmosphere every so often. They usually burn up immediately with a dazzling display of bright green light and nothing is left to hit the ground. On Mars, the atmosphere is much thinner, with little oxygen to facilitate burning.
The blue is copper oxide or sulfide. The laser samples Perseverance performed will confirm or disprove that.
The pitting is another interesting anomaly. They could be the result of some minor burning of minerals as it entered Mars' atmosphere.
Very very cool find. Congratulations Perseverance and NASA.