Metals that are perceived to have high supply risks have recently been
called "critical metals". The exact list of metals that are considered to
be critical varies, but typically include indium, gallium, germanium,
selenium, tellurium, neodymium, dysprosium, lithium, vanadium, tin,
tungsten, molybdenum, rhenium, tantalum, niobium, cobalt and the PGE.
The mission of the IAGOD Working Group for Critical Metals is to promote and
coordinate research into the mechanisms that lead to economic
concentration of critical metals in geological environments