Calcium thorium phosphate (Whitlockite-type mineral). Synthesis and structure refinement.

Authors :: Orlova, A.
Khaĭnakov, S.
Loginova, E.
Oleneva, T.
Granda, S.
Kurazhkovskaya, V.
Source :: Crystallography Reports; Jul2009, Vol. 54 Issue 4, p591-597, 7p, 1 Diagram, 4 Charts, 3 Graphs
Publication Year :: 2009
Abstract: The crystal structure of a new calcium thorium phosphate has been refined by the full-profile Rietveld method using X-ray powder diffraction data. The sample has been synthesized by the sol-gel technique. The phosphate has been identified by X-ray powder diffraction and IR spectroscopy. The refined composition is represented by the formula Ca<subscript>10.26</subscript>Th<subscript>0.12</subscript>(PO<subscript>4</subscript>)<subscript>7</subscript>. The CaO<subscript> n</subscript> and PO<subscript>4</subscript> polyhedra are distorted compared to the corresponding polyhedra in the basic compound β-Ca<subscript>3</subscript>(PO<subscript>4</subscript>)<subscript>2</subscript>. [ABSTRACT FROM AUTHOR]

Subjects :: CALCIUM
THORIUM
PHOSPHATES
X-ray diffraction
POLYHEDRA
THORIUM phosphates

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