How do we know a meteorite is from Mars?

Martian meteorites are distinguished from Earth rocks and other meteorite types by their chemical and mineral composition, as well as their age. Moreover, gases trapped in shock glass in martian meteorites have been matched to measurements of the martian atmosphere taken by the NASA Viking mission in 1976.Click to see full answer. Considering this, how do we know alh84001 came from Mars?The strongest evidence for their martian origin is that they, including ALH 84001, contain traces of gas that is just like the martian atmosphere. We know the composition of the martian atmosphere, because the Viking Lander spacecraft analyzed it, on Mars, in 1976.Beside above, how do we know where meteorites come from? Most of the meteorites found on the Earth appear to be fragments from the asteroid belt between Mars and Jupiter and other ones originate from the Moon and Mars. This chemical composition closely resembles observations on Mercury’s crust ran by the probe Messenger, in orbit around the planet. Simply so, how did meteorite from Mars arrive on Earth? A Martian meteorite is a rock that formed on the planet Mars and was then ejected from Mars by the impact of an asteroid or comet, and finally landed on the Earth.How do I know if I’ve found a meteorite?To find out if a rock is a meteorite, look for the rock to be black or rusty brown, which shows that the meteorite has either just fallen or has been on Earth for some time. Next, determine whether your rock has an irregular shape with rounded edges as this is the typical shape of meteorites.