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.