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GEOREF RECORD

Crystal structure of rimkorolgite, Ba[Mg (sub 5) (H (sub 2) O) (sub 7) (PO (sub 4) ) (sub 4) ](H (sub 2) O), and its comparison with bakhchisaraitsevite

Sergey V. Krivovichev, Sergey N. Britvin, Peter C. Burns and Viktor N. Yakovenchuk
Crystal structure of rimkorolgite, Ba[Mg (sub 5) (H (sub 2) O) (sub 7) (PO (sub 4) ) (sub 4) ](H (sub 2) O), and its comparison with bakhchisaraitsevite
European Journal of Mineralogy (April 2002) 14 (2): 397-402

Abstract

The crystal structure of rimkorolgite (a 8.3354, b 12.8304, c 18.313 Aa, beta 90.025 degrees , V 1958.5 Aa (super 3) , space group P2 (sub 1) /c, Z = 4) has been solved and refined to R 0.052. There are five symmetrically independent Mg (super 2+) cations, each octahedrally coordinated by four O and two H (sub 2) O groups. One symmetrically independent Ba (super 2+) cation is coordinated by eight O and two H (sub 2) O groups. The Mg(O,OH) (sub 6) groups and PO (sub 4) tetrahedra form sheets (001); their main elements are zigzag chains of the Mg(O,OH) (sub 6) edge-sharing octahedra. The chains are linked via common vertices to form an octahedral sheet on which Mg atoms are at the vertices of the 6 (super 3) hexagonal net. The PO (sub 4) tetrahedra are above and below hexagonal rings of Mg octahedra and are linked to them by sharing common O vertices. The Ba atoms and the H (sub 2) O(1) and H (sub 2) O(22) groups are located between the sheets providing their linkage into a 3D structure. The structure is closely related to that of bakhchisaraitsevite, Na (sub 2) Mg (sub 5) (PO (sub 4) ) (sub 4) .7H (sub 2) O; the rimkorolgite structure can be considered as a bakhchisaraitsevite-like framework interrupted by the presence of large Ba (super 2+) cation.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 14
Serial Issue: 2
Title: Crystal structure of rimkorolgite, Ba[Mg (sub 5) (H (sub 2) O) (sub 7) (PO (sub 4) ) (sub 4) ](H (sub 2) O), and its comparison with bakhchisaraitsevite
Affiliation: Saint Petersburg State University, Department of Crystallography, Saint Petersburg, Russian Federation
Pages: 397-402
Published: 200204
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 14
Accession Number: 2002-027812
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables
N35°00'00" - N71°00'00", W25°00'00" - E75°00'00"
N66°00'00" - N70°00'00", E32°00'00" - E42°00'00"
N37°00'00" - N83°00'00", W170°00'00" - E28°00'00"
Secondary Affiliation: University of Notre Dame, USA, United StatesRussian Academy of Sciences, RUS, Russian Federation
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 200210
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