Vibrational spectroscopy of natural cave mineral monetite CaHPO4 and the synthetic analog

Frost, Ray L., Xi, Yunfei, Millar, Graeme J., Tan, Keqin, & Palmer, Sara J. (2013) Vibrational spectroscopy of natural cave mineral monetite CaHPO4 and the synthetic analog. Spectroscopy Letters, 46(1), pp. 54-59.

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Abstract

Monetite is a phosphate mineral formed by the reaction of the chemicals in bat guano with calcite substrates and is commonly found in caves. The analog of the mineral monetite CaHPO4 has been synthesized and the Raman and infrared spectra of the natural monetite originating from the Murra-el-elevyn Cave, Eucla, Western Australia, compared. Monetite is characterized by a complex set of phosphate bands that arise because of two sets of pairs of phosphate units in the unit cell. Raman and infrared bands are assigned to HPO4(2-), OH stretching and bending vibrations. Infrared bands at 1346 and 1402 cm−1 are assigned to POH deformation modes. Vibrational spectroscopy confirms the presence of monetite in the cave system.

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ID Code: 58694
Item Type: Journal Article
Refereed: Yes
Keywords: brushite, ‘‘cave’’ minerals, hydrogen phosphate, monetite, Raman spectroscopy
DOI: 10.1080/00387010.2012.663852
ISSN: 1532-2289
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 Taylor & Francis Group, LLC
Deposited On: 04 Apr 2013 03:22
Last Modified: 06 May 2014 18:25

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