It's not "exotic" in that it isn't used (it has major industrial Uses) but rather that it is one of the less common materials in the crust. It's less common th

It's not "exotic" in that it isn't used (it has major industrial Uses) but rather that it is one of the less common materials in the crust. It's less common than many of the "rare earth" elements and less common than uranium (Uranium is the 49th most common element while Molybdenum is the 58th depending on source https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth%27s_crust https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth... ).