A variety of Amalgam containing 13% of Mercury, applied to the malleable amalgam described by I. Domeyko (1841).
Originally described from Arqueros Ag Mining District, La Serena, Elqui Province, Coquimbo Region, Chile.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.