Antiferromagnetic PbMnTeO6, also known as mineral kuranakhite, was reported recently to have all three cations in trigonal prismatic coordination, extremely unusual for both Mn(4+) and Te(6+). In the present work, the phase was reproduced with the same lattice parameters and Néel temparature TN = 20 K. However, powder neutron diffraction unambiguously determined octahedral (trigonal antiprismatic) coordination for all cations within chiral space group P312. The same symmetry is proposed for SrMnTeO6 and PbGeTeO6, instead of reported space groups P-62m and P31m, respectively. PbMnTeO6 was found to be a robust antiferromagnet with assumingly substantial scale of exchange interactions since the Néel temperature did not show any changes in external magnetic fields up to 7 T. Determined effective magnetic moment μeff = 3.78 μB is in excellent agreement with numerical estimation using effective g-factor g = 1.95 directly measured here by electron spin resonance (ESR). Both specific heat and ESR data indicate rather two-dimensional character of magnetism in compound under study. The combination of chirality with magnetic order makes PbMnTeO6 a promising material with possible multiferroic properties.