The crystal structure of girvasite, NaCa2Mg3(PO4)3(CO3)(H2O)6, a complex phosphate carbonate hydrate based upon electroneutral heteropolyhedral layers

• Published in: Russian Geology and Geophysics
• Main Authors: Krivovichev, S.V., Britvin, S.N., Chernyatieva, A.P., Yakovenchuk, V.N.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Russian Geology and Geophysics 2015
• Subjects: crystal structure; phosphate-carbonate; complexation; structural complexity; Kola peninsula; Kola Peninsula; Sokolova; Yegorov; kola peninsula
• Online Access: https://doi.org/10.1016/j.rgg.2015.01.009; http://hdl.handle.net/11701/2271

Crystal chemical formula of girvasite. As it was mentioned above, the initial formula of girvasite proposed by Sokolova and Yegorov-Tismenko (1990) on the basis of crystal-structure determination is NaCa2Mg3(OH)2H2(PO4)3(CO3)(H2O)4. However, determination of all H sites in this work revealed no hydr...