Interactive IRUG Spectrum

Section: 6

Minerals and pigments (MP)

Page: 341

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Details

IRUG filename: IMP00341	Data type: Infrared	IRUG material class: Minerals and pigments (MP)
Sample type: Reference material	Common name(s): Tunisite	Chemical/botanical name(s): Anhydrous carbonate with hydroxyl or halogen (class), dawsonite (mineral group)
Sample source 1: Condorcet	Source location 1: Drome, France	Sample source 2: Royal Museum of Scotland
Source location 2: Chambers Street, Edinburgh, EH1 1JF, UK	Sample identifier 2: RMS1974.47.165	Sample source 3: The Natural History Museum, National Museums of Scotland
Source location 3: Cromwell Road, London, SW7 5BD, UK, Edinburgh, UK	Color: White, creamy	Other: Spectrum matches that given in Suhner, (5-57) tunisite
Application: Transmission FTIR spectroscopy	Mode: Tran	Literature Reference: Jones, G. C., and B. Jackson. Infrared Transmission Spectra of Carbonate Minerals. London: Chapman & Hall, 1993., Effenberger, H., F. Kluger, F. Pertlik, and J. Zemann. "Tunisite: Crystal Structure and Revision of Chemical Formula." Tschermaks Mineralogische Und Petrographische Mitteilungen 28.1 (1981): 65-77., Zdenek, J., P. Povondra, and S. Ervin. "Tunisite, a New Carbonate from Tunisia." American Mineralogist 54.1, 2 (1969): 1-13.
Originating institution name: Natural History Museum, National Museums of Scotland	Originating institution acronym: NHM	Molecular formula: C4 H8 Al4 Ca2 Cl Na O 20
Linear formula: NaCa2Al4(CO3)4(OH)8Cl	Other analytical methods: EDS (Na:Ca:Al:Cl=approx. 0.8:2.1:4:1), SEM, XRD (7959F NHM std=tunisite)