کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1231395 1495274 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Identification of montgomeryite mineral [Ca4MgAl4(PO4)6·(OH)4·12H2O] found in the Jenolan Caves—Australia
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Identification of montgomeryite mineral [Ca4MgAl4(PO4)6·(OH)4·12H2O] found in the Jenolan Caves—Australia
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 94, August 2012, Pages 1–5
نویسندگان
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