From structure topology to chemical composition. IX. Titanium silicates: revision of the crystal chemistry of lomonosovite and murmanite, Group-IV minerals

• Published in: Mineralogical Magazine
• Main Authors: CAMARA ARTIGAS, Fernando, Sokolova E, Hawthorne FC, Abdu Y.
• Other Authors: Cámara F, Abdu Y
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2008
• Subjects: lomonosovite; murmanite; crystal structure refinement; hydrogen bonding; EMP analysi; Mossbauer spectroscopy; chemical formula; Ti disilicate mineral; Group IV; Kola Peninsula; Lovozero; kola peninsula
• Online Access: http://hdl.handle.net/2318/78503; https://doi.org/10.1180/minmag.2008.072.6.1207; http://minmag.geoscienceworld.org/content/72/6/1207.abstract

The crystal structures of lomonosovite, ideally Na(10)Ti(4)(Si(2)O(7))(2)(PO(4))(2) O(4) a = 5.4170(7) angstrom, b = 7.1190(9) angstrom, c = 14.487(2) angstrom, alpha = 99.957(3)degrees, beta = 96.711(3)degrees, gamma = 90.360(3)degrees, V = 546.28(4) angstrom(3), D(calc). = 3.175 g cm(-3), and murm...