Hodrushite, a new sulphosalt of copper and bismuth, was found in the Rosalia ore vein at Banská Hodruá near Banská Štiavnica, Czechoslovakia. It has chemical composition Cu_8·12Bi_11·54Fe_0·29S₂₂(as determined by electron-microprobe method) close to Cu₈Bi₁₂S₂₂. Symmetry is monoclinic, space group A2/m, lattice constants a 27·21, b 3·93, c 17·58 Å, β 92° 9′, measured density 6·35, calculated density 6·45 g/cm₃. Microhardness 200 kg/mm₂, anisotropic, weak bireflectance, creamy with pinkish tint, maximum reflectivity about 6000 Å. Crystals needle-shaped and striated along [010], colour steel-grey, quickly tarnishing to bronze. Associated with quartz, hematite, and chalcopyrite. Closely related to cuprobismutite.