کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1231395 | 1495274 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Identification of montgomeryite mineral [Ca4MgAl4(PO4)6·(OH)4·12H2O] found in the Jenolan Caves—Australia Identification of montgomeryite mineral [Ca4MgAl4(PO4)6·(OH)4·12H2O] found in the Jenolan Caves—Australia](/preview/png/1231395.png)
In this paper, we report on many phosphate containing natural minerals found in the Jenolan Caves – Australia. Such minerals are formed by the reaction of bat guano and clays from the caves. Among these cave minerals is the montgomeryite mineral [Ca4MgAl4(PO4)6·(OH)4·12H2O]. The presence of montgomeryite in deposits of the Jenolan Caves – Australia has been identified by X-ray diffraction (XRD). Raman spectroscopy complimented with infrared spectroscopy has been used to characterise the crystal structure of montgomeryite. The Raman spectrum of a standard montgomeryite mineral is identical to that of the Jenolan Caves sample. Bands are assigned to H2PO4−, OH and NH stretching vibrations. By using a combination of XRD and Raman spectroscopy, the existence of montgomeryite in the Jenolan Caves – Australia has been proven. A mechanism for the formation of montgomeryite is proposed.
Raman spectrum of montgomeryite from the Jenolan Caves.Figure optionsDownload as PowerPoint slideHighlights
► Many phosphate containing minerals are found in the Jenolan Caves.
► Such minerals are formed by the reaction of bat guano and clays from the caves.
► Among these cave minerals is the mineral montgomeryite Ca4MgAl4(PO4)6·(OH)4·12H2O.
► By using a combination of XRD and Raman spectroscopy, the existence of montgomeryite in the Jenolan Caves has been proven.
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 94, August 2012, Pages 1–5