CRYSTALLOGRAPHIC ANALYSIS OF THREE MODIFICATIONS OF CaCO3: CALCITE, ARAGONITE, VATERITE

被引:5
作者
Borisov, S., V [1 ]
Magarill, S. A. [1 ]
Pervukhina, N., V [1 ]
机构
[1] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk, Russia
关键词
crystallographic analysis; calcite; aragonite; vaterite; mechanisms of atomic ordering; anion and cation sublattices; symmetry-stability; crystal dynamics;
D O I
10.1134/S0022476621070064
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The crystallographic analysis of three modifications of CaCO3 - rhombohedral calcite (R (3) over barc), orthorhombic aragonite (Pmcn), and monoclinic vaterite (C2/c) - reveals different mechanisms of atomic ordering in the structures. An important role in the formation of a specific structure is played by the point symmetry of energetically stable atomic groups (templates) in the precrystallization phase, which depends on the crystallization conditions, impurities, and local heterogeneities. Then the template symmetry forms the structure symmetry by placing heavy atoms and mass centers of stable CO3 atomic groups mainly in special positions with fixed coordinates. The details of this crystal dynamics (the ordering of atomic positions by translational and point symmetries) are shown.
引用
收藏
页码:1027 / 1037
页数:11
相关论文
共 7 条
[1]   TEMPERATURE DEPENDENCE OF THE STRUCTURAL PARAMETERS IN THE TRANSFORMATION OF ARAGONITE TO CALCITE, AS DETERMINED FROM IN SITU SYNCHROTRON POWDER X-RAY-DIFFRACTION DATA [J].
Antao, Sytle M. ;
Hassan, Ishmael .
CANADIAN MINERALOGIST, 2010, 48 (05) :1225-1236
[2]   On stimuli and mechanisms of crystallization [J].
Borisov, S. V. ;
Pervukhina, N. V. ;
Magarill, S. A. .
STRUCTURAL CHEMISTRY, 2016, 27 (06) :1673-1683
[3]   STABILITY OF CATION MATRIX FRAGMENTS IN SEVERAL SOLID-PHASE TRANSITIONS [J].
BORISOV, SV ;
BLIZNYUK, NA .
JOURNAL OF STRUCTURAL CHEMISTRY, 1987, 28 (03) :457-462
[4]   On the symmetry-stability problem [J].
Borisov, SV .
JOURNAL OF STRUCTURAL CHEMISTRY, 1995, 36 (06) :1061-1062
[5]   Algorithms, software, and examples of pseudotranslational sublattice analysis for crystal structures [J].
Gromilov, S. A. ;
Bykova, E. A. ;
Borisov, S. V. .
CRYSTALLOGRAPHY REPORTS, 2011, 56 (06) :947-952
[6]   Ab Initio Structure Determination of Vaterite by Automated Electron Diffraction [J].
Mugnaioli, Enrico ;
Andrusenko, Iryna ;
Schueler, Timo ;
Loges, Niklas ;
Dinnebier, Robert E. ;
Panthoefer, Martin ;
Tremel, Wolfgang ;
Kolb, Ute .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (28) :7041-7045
[7]  
Povarennykh A. S, 1966, KRISTALLOKHIM KLASSI