The crystal structure of lintisite, Na3LiTi[Si2O6]2O2·2H2O, a new titanosilicate from Lovozero (USSR)

• Published in: Zeitschrift für Kristallographie
• Main Authors: MERLINO, STEFANO, PASERO, MARCO, KHOMYAKOV AP
• Other Authors: Merlino, Stefano, Pasero, Marco, Khomyakov, Ap
• Format: Article in Journal/Newspaper
• Language: English
• Published: 1990
• Subjects: Lintisite; crystal structure; silicate lithium titano; lithium titanosilicate; titanosilicate lithium; kola peninsula
• Online Access: http://hdl.handle.net/11568/12583; https://doi.org/10.1524/zkri.1990.193.1-2.137

Lintisite is a new titanosilicate with ideal chemical composition Na3LiTi2Si4O14.2H2O, found at Lovozero, Kola peninsula, USSR. The mineral is monoclinic, space group C2/c, with a = 28.583(4), b = 8.600(1), c = 5.219(1) angstrom, beta = 91.03(2)-degrees. The crystal structure of lintisite has been refined to R = 0.033, Rw = 0.028 for 1095 reflections collected with Mo K-alpha radiation. The structure is formed by pyroxene-like chains of [SiO4] tetrahedra, chains of edge-sharing [TiO6] and [Na(O,H2O)6] octahedra, columns of edge-sharing [LiO4] tetrahedra, and distorted [NaO8] cubes. The modular relationships among lintisite, vinogradovite and ramsayite are discussed. Finally the thermal behaviour of lintisite is explained in the light of the structural results.