Are the ‘cave’ minerals archerite (K,NH4)H2PO4 and biphosphammite (K,NH4)H2PO4 identical? A molecular structural study
| Data(s) |
01/09/2011
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| Resumo |
The molecular structure of the mineral archerite ((K,NH4)H2PO4) has been determined and compared with that of biphosphammite ((NH4,K)H2PO4). Raman spectroscopy and infrared spectroscopy has been used to characterise these ‘cave’ minerals. Both minerals originated from the Murra-el-elevyn Cave, Eucla, Western Australia. The mineral is formed by the reaction of the chemicals in bat guano with calcite substrates. Raman and infrared bands are assigned to H2PO4-, OH and NH stretching vibrations. The Raman band at 981 cm-1 is assigned to the HOP stretching vibration. Bands in the 1200 to 1800 cm-1 region are associated with NH4+ bending modes. The molecular structure of the two minerals appear to be very similar, and it is therefore concluded that the two minerals are identical. |
| Formato |
application/pdf |
| Identificador | |
| Publicador |
Elsevier |
| Relação |
http://eprints.qut.edu.au/43735/1/43735A.pdf DOI:10.1016/j.molstruc.2011.06.015 Frost, Ray L., Xi, Yunfei, & Palmer, Sara J. (2011) Are the ‘cave’ minerals archerite (K,NH4)H2PO4 and biphosphammite (K,NH4)H2PO4 identical? A molecular structural study. Journal of Molecular Structure, 1001(1-3), pp. 49-55. |
| Direitos |
Copyright 2011 Elsevier This is the author’s version of a work that was accepted for publication in Journal of Molecular Structure. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Molecular Structure, [VOL 1001, ISSUE 1-3, (2013)] DOI: 10.1016/j.molstruc.2011.06.015 |
| Fonte |
Chemistry; Faculty of Science and Technology |
| Palavras-Chave | #030606 Structural Chemistry and Spectroscopy #archerite, biphosphammite, ‘cave’ minerals, brushite, mundrabillaite, dihydrogen phosphate, Raman spectroscopy. |
| Tipo |
Journal Article |
