Of the 24,000 or so meteorites that have been discovered on Earth, only 34 have been identified as originating from the planet Mars.
These rare meteorites created a stir throughout the world when NASA announced in August 1996 that evidence of microfossils may be present in one of these Mars meteorites.
These numbers seem very low , must be loads around unrecognised .
Had several iron type many years ago in an inherited collection of minerals and a shed full of trilobites , never knew they were that rare.