Journal article
Ba(NpO2)(PO4)(H2O), its relationship to the uranophane group, and implications for Np incorporation in uranyl minerals
The American mineralogist, Vol.91(7), pp.1089-1093
07/01/2006
DOI: 10.2138/am.2006.2132
Abstract
Single crystals of Ba(NpO
)(PO
)(H
O) were obtained using hydrothermal synthesis techniques. The structure was determined using single-crystal X-ray diffraction data collected using MoKα radiation and an APEX II CCD detector and was refined on the basis of F
for all unique data to R
= 2.41%. Ba(NpO
)(PO
)(H
O) crystallized in monoclinic space group P2
/n with a = 6.905(3), b = 7.108(3), c = 13.321(6) Å, β = 105.02°, and V = 631.4 Å
. The structure contains chains of edge-sharing neptunyl pentagonal bipyramids that link through phosphate tetrahedra to form infinite sheets. This sheet-type is identical to the anion topology of the uranophane group, in particular to that of oursinite, Co[(UO
)(SiO
OH)]
(H
O)
. Similarities between Ba(NpO
)(PO
)(H
O) and the uranophane group of minerals suggests a charge-balancing mechanism for incorporation of Np
into uranyl minerals.
Details
- Title: Subtitle
- Ba(NpO2)(PO4)(H2O), its relationship to the uranophane group, and implications for Np incorporation in uranyl minerals
- Creators
- Tori Z Forbes - Department of Civil Engineering and Geological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, U.S.APeter C Burns - Department of Civil Engineering and Geological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, U.S.A
- Resource Type
- Journal article
- Publication Details
- The American mineralogist, Vol.91(7), pp.1089-1093
- Publisher
- De Gruyter
- DOI
- 10.2138/am.2006.2132
- ISSN
- 0003-004X
- eISSN
- 1945-3027
- Number of pages
- 5
- Language
- English
- Date published
- 07/01/2006
- Academic Unit
- Civil and Environmental Engineering; Chemistry; Core Research Facilities
- Record Identifier
- 9984216563902771
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