Specimens Bindheimite is an alteration product, or more specifically an oxidation product of lead antimony sulfides such as jamesonite , Pb 4 FeSb 6 S 14 and boulangerite , Pb 5 Sb 4 S 11. Sometimes it pseudomorphs these minerals meaning that it replaces them without to much distortion of the outward appearance of the crystals. More commonly, bindeimite replaces these minerals with cryptocrystalline indistinct masses or crusts. Color is yellow to red-brown or greenish to white. Luster is resinous to earthy.
Crystals are opaque.
Crystal System is isometric. Crystal Habits include pseudomorphs of lead antimony sulfides, but more commonly cryptocrystalline masses or crusts. Cleavage is not discernible. Fracture is earthy. Hardness is 4 - 4.5.