A mechanism for the consolidation (previously obtained experimentally) of brittle quartz powder particles under strong external action (torsion under pressure) is proposed. The assumption is based on the possible destruction of silicon-oxygen tetrahedra by the breaking of interatomic Si-O bonds. It is shown that the surface layer of ceramic powder particles includes, in addition to the initial tetrahedra, their «fragments» - defects of tetrahedra (first proposed by the authors of the article, as well as their name). The emergence of tetrahedra and their fragments by their faces, edges and vertices on the surface determines the shape of the surface, and ultimately the adhesion of surfaces. The healing of broken Si-O bonds that occurs with an increase in the external impact determines the possibility of consolidation (partial or complete).