... Ore minerals: Alabandite, boulangerite, bournonite, chalcopyrite, galena, magnetite, nagyagite, pyrite, realgar, sphalerite, stibnite, sylvanite, telluride, tetrahedrite, krennerite,
petzite, stuetzite, arsenic,...
http://www.gl.rhul.ac.uk/geode/ABCD/Apuseni.html