is there any logic to bringing some fissile material to mars for use as a future fuel source? My gut instinct says no, but its among the only things I can think

is there any logic to bringing some fissile material to mars for use as a future fuel source? My gut instinct says no, but its among the only things I can think of that would be heavy enough. Uranium and Plutonium are pretty heavy. The only other things I could think of would be common catalyst materials like platinum. Something that could be collected and used later by some future mission. Lead might be useful, as a battery component, but forming it would be problematic. If it remains tungsten, and the impact is going to be at very very high speeds, do any of the other mars rovers have instruments capable of detecting the seismic waves produced? Could that provide us any details of the makeup of the crust? A 150kg tungsten mass would likely make quite a crater traveling at 9000MPH.