potarite
/pəˈtɑːrʌɪt/Mineralogy
noun
Palladium amalgam, PdHg, occurring naturally as brittle, silvery grains and nuggets with variable composition and crystallizing in the tetragonal system.
Origin
1920s. From the name of the Potaro River, in Guyana, South America, where the mineral was first found + -ite.