The structure of the mineral batisite with high potassium content from
the Malyi Murunsk massif, (Yakutia) has been refined (sp. gr. Ima2, R
= 0.047). It has been established that large cations are orderly dist
ributed over the cavities of the mixed Framework and that the Fe impur
ity is located in one of two Ti positions. The refined structure is co
mpared with the structures of batisite specimens studied earlier withi
n acentric (Ima2) and centrosymmetric (Imam) space groups.