The paper reports evidence that the multi-spin-axis magnetic structure proposed in 1964 by van Laar is realized antiferromagnetic CoO. This tetragonal spin arrangement produces both strong and weaker monoclinic distortion experimentally observed this material. to be a “monoclinic-like” of array oxygen atoms, comparable with rhombohedral-like atoms recently present NiO MnO. monoclinic-like has n...