The ore pyrargyrite is associated with veins of this precious metal, symbol Ag
Most of ... higher 
grade with up to 30% Zn+Pb+Cu, and up to 200 g/t Ag and 3 g/t .... numerous 
complex base- and precious-metal sulphide, sulphosalt .... hydrothermal veins, 
commonly associated with gold and silver, as .... chalcocite, acanthite and 
pyrargyrite.