KOLSKYITE, A NEW TS-BLOCK MINERAL: PREDICTION AND REALITY
The discovery of kolskyite is extremely important for us as it proves that we can predict crystal structures of TS-block minerals: the crystal structure of kolskyite was predicted by Sokolova & Cámara (2010). Sokolova & Cámara (2010) defined two types of TS-block structures: basic and derivative structures. A basic structure has only one type of TS block and only one type of I block; in a derivative structure, there is more than one type of TS block and there is more than one type of I block. A derivative structure is related to a number of basic structures of the same group. Hence we can predict a derivative structure as a combination of structural fragments of basic structures. Using inverse prediction, the basiccrystal structure of kolskyite was predicted as a component of known derivative structures.
Sokolova, E. (2006) From structure topology to chemical composition: I. Structural hierarchy and stereochemistry in titanium disilicate minerals. Canadian Mineralogist, 44, 1273-1330.
Sokolova, E. & Cámara, F. (2010) From chemical composition to structure topology in Ti silicates. 20th General Meeting of the International Mineralogical Association, Abstracts, Budapest, Hungary.