The crystal structure of leningradite, PbCu3 (VO42 Cl2, a mineral from the fumaroles of the Great fissure Tolbachik eruption, located in the Kamchatka Peninsula, Russia,has been solved by direct methods from single-crystal X-ray-diffraction data and refined to R1 = 0.047 for 1235 unique reflections with Fo ≥ 4σF. The mineral is orthorhombic, space group Ibam, a 9.005(7), b 11.046(9), c 9.349(7) Å, V929.9(13) Å3, Z = 4. The structure contains one symmetrically unique Pb position coordinated by four O and four Cl atoms. The V5+ cation is tetrahedrally coordinated by four O atoms. There are two symmetrically independent Cu sites in distorted octahedral [40 + 2Cl] coordination. The structure can be described in terms of fundamental chains consisting of corner-sharing CuO4 squares and VO4 tetrahedra. The chains are parallel to the c axis and are linked into a three-dimensional framework with elliptical channels occupied by the Pb2+ cations and Cl- anions.