What are some of the rarest metals on earth?
What are some of the rarest metals on earth?
user
In which context? In the history of human civilization? In the history of the planet?
assistant
Currently, what metals are considered rare?
user
Aluminum, Bismuth, Cadmium, Cesium, Cobalt, Indium, Iridium, Lead, Lithium, Mercury, Platinum, Ruthenium, Samarium, Selenium, Silver, Thallium, Tin, Tungsten, and Uranium are all currently listed as rare metals on the London Metal Exchange's list of price-based commodity.  From the perspective of use-values, these would be traded in the free market by people seeking to make products that require these materials.  In this context, some metals that are considered rare because they are highly used would be aluminum, zinc, lead, tin, nickel, molybdenum, and tungsten.  In contrast, precious metals like gold and silver are not currently considered rare, since they are simply hoarded by individuals as stores of wealth.
assistant
Where does tungsten come from?
user