The Wheal Ellen (Commonwealth Mine) produced ~75 000 t of sulphide ore averaging ~10% Pb, 18% Zn, 150 g/t Ag and 4 g/t Au. Mineralisation comprised massive pyrite–sphalerite–galena with minor chalcopyrite, gahnite, tetrahedrite, marcasite, pyrrhotite and arsenopyrite hosted by biotite schist, sericite schist and quartz–garnet–andalusite–biotite–staurolite rocks within a sequence of metagreywacke and quartz–biotite–garnet schist of the Tapanappa Formation.
From:[url]http://www.pir.sa.gov.au/minerals/geological_survey_of_sa/commodities/leadzinc[/url]