Extensive collecting at the abandoned mines has revealed over 65 mineral species in a complex polymetallic quartz vein system, including bismutoferrite, bismutostibiconite, clinobisvanite,
koechlinite, namibite, schumacherite, posnjakite, wroewolfeite, idaite, cornwallite, clinoclase, cornubite and lindgrenite.
Associated bismuth minerals along the quartz veins include bismite, bismutite, bismutoferrite, bismutostibiconite, schumacherite and
koechlinite. The source of the bismuth was traced to altered wittichenite exsolved within the bornite of the copper-rich quartz veins.