It adopts "antifluorite structure," which means that the small K+ ions occupy the tetrahedral (F−) sites in fluorite, and the larger S2− centers occupy the eight-coordinate sites.
On poprima "antifluoritnu strukturu", što znači da mali K+ joni zauzimaju tetraedralna (F−) mesta u fluoritu, i veliki S2− centri imaju osam koordinatnih mesta.