Crystal structures of three CaSeO4 polymorphs and their mineralogical relationships

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F14%3A00107086" target="_blank" >RIV/00216224:14310/14:00107086 - isvavai.cz</a>

Result on the web

<a href="https://www.researchgate.net/publication/263725673_Crystal_structures_of_three_CaSeO4_polymorphs_and_their_mineralogical_relationships" target="_blank" >https://www.researchgate.net/publication/263725673_Crystal_structures_of_three_CaSeO4_polymorphs_and_their_mineralogical_relationships</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1127/0077-7757/2014/0257" target="_blank" >10.1127/0077-7757/2014/0257</a>

Result language

angličtina

Original language name

Crystal structures of three CaSeO4 polymorphs and their mineralogical relationships

Original language description

Three polymorphs of anhydrous calcium selenate CaSeO4 have been synthesized; the orthorhombic as well as the monoclinic polymorph were prepared at 210 degrees C; crystals of tetragonal CaSeO4 were grown at 70 degrees C. Based on single crystal X-ray diffraction data the structure of the orthorhombic compound was solved and refined in space group Cmca [a = 7.192(1), b = 14.404(2), c = 6.398(1) angstrom, V = 662.8 angstrom(3), Z = 8 to R1 = 2.0 %, wR2 = 5.5 %]. It belongs to a new structure type with close resemblance to zircon and anhydrite. The structure of monoclinic CaSeO4 is isotypic with monazite and was refined in space group P2(1)/n [a = 6.860(1), b = 7.086(1), c = 6.692(1) angstrom, beta = 104.21(1)degrees, V = 315.3 angstrom(3), Z = 4; R1 = 2.6 %, wR2 = 5.2 %]. The tetragonal modification, refined in space group I4(1)/a, (a = 5.054(1), c = 11.678(2) angstrom, V = 298.3 angstrom(3), Z = 4; R1 = 1.6 %, wR2 = 4.1 %) represents a scheelite structure type. In addition, structure relationships within A([8])X([4])O(4) representatives are emphasized.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10504 - Mineralogy

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Neues Jahrbuch fur Mineralogie, Abhandlungen

ISSN

0077-7757

e-ISSN

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Volume of the periodical

191

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

215-223

UT code for WoS article

000331098000007

EID of the result in the Scopus database

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