Raman and infrared spectroscopic study of the borate mineral kaliborite

López, Andrés, Scholz, Ricardo, & Frost, Ray L. (2015) Raman and infrared spectroscopic study of the borate mineral kaliborite. Spectroscopy Letters, 48(10), pp. 712-716.

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We have studied the mineral kaliborite. The sample originated from the Inder B deposit, Atyrau Province, Kazakhstan, and is part of the collection of the Geology Department of the Federal University of Ouro Preto, Minas Gerais, Brazil. The mineral is characterized by a single intense Raman band at 756 cm−1 assigned to the symmetric stretching modes of trigonal boron. Raman bands at 1229 and 1309 cm−1 are assigned to hydroxyl in-plane bending modes of boron hydroxyl units. Raman bands are resolved at 2929, 3041, 3133, 3172, 3202, 3245, 3336, 3398, and 3517 cm−1. These Raman bands are assigned to water stretching vibrations. A very intense sharp Raman band at 3597 cm−1 with a shoulder band at 3590 cm−1 is assigned to the stretching vibration of the hydroxyl units. The Raman data are complimented with infrared data and compared with the spectrum of kaliborite downloaded from the Arizona State University database. Differences are noted between the spectrum obtained in this work and that from the Arizona State University database. This research shows that minerals stored in a museum mineral collection age with time. Vibrational spectroscopy enhances our knowledge of the molecular structure of kaliborite.

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ID Code: 84944
Item Type: Journal Article
Refereed: Yes
Keywords: borate, hydroxyl, Infrared, kaliborite, Raman spectroscopy
DOI: 10.1080/00387010.2014.991974
ISSN: 1532-2289
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 Taylor & Francis Group, LLC
Copyright Statement: The Version of Record of this manuscript has been published
and is available in Spectroscopy Letters, 17 June 2015,
Deposited On: 22 Jun 2015 22:54
Last Modified: 17 Jun 2016 22:13

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