Vibrational spectroscopic characterization of the magnesium borate-phosphate mineral lüneburgite. Issue 9 (20th October 2016)

• Record Type: Journal Article
• Authors: Korybska-Sadło, Iwona; Sitarz, Maciej; Król, Magdalena; Gunia, Piotr
• Is Part Of: Spectroscopy letters. Volume 49:Issue 9(2016)
• Page Start: 606
• Page End: 612
• Publication Date: 2016-10-20
• Subjects: Borate-phosphate -- infrared spectroscopy -- lüneburgite -- Raman spectroscopy; Spectrum analysis -- Periodicals; 543.5
• DOI: 10.1080/00387010.2016.1236819
• Languages: English
• ISSNs: 0038-7010

Abstract

ABSTRACT: Lüneburgite, a rare magnesium borate-phosphate mineral from Mejillones, Chile, has been characterized using Raman and mid-infrared spectroscopy methods. Boron tetrahedra are characterized by sharp Raman band at 877 cm −1, attributed to the ν1 [BO4 ] 5− symmetric stretching mode. The phosphate anion is associated with a distinct band at 1032 cm −1, attributed to the ν3 [PO4 ] 3− antisymmetric stretching mode. The most intensive Raman band at 734 cm −1 is ascribed to stretching vibrations of bridging oxygen atoms in boron–oxygen–phosphor bridges. Bonds associated with water bending mode and stretching vibration are observed at 1661 cm −1 (infrared) and in the 3000–3500 cm −1 region (Raman and infrared spectrum).