Interactive IRUG Spectrum

Section: 6

Minerals and pigments (MP)

Page: 356

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Details

IRUG filename: IMP00356	Data type: Infrared	IRUG material class: Minerals and pigments (MP)
Sample type: Reference material	Common name(s): Coalingite	Chemical/botanical name(s): Hydrated carbonate with hydroxyl or halogen (class), sjogrenite (mineral group)
CAS name: Coalingite (Fe2Mg10(CO3)(OH)24.2H2O)	Sample source 1: Near Dallas Gem Mine	Source location 1: San Benito County, California, US
Sample source 2: British Museum	Source location 2: Great Russell Street, London, WC1B-3DG, UK	Sample identifier 2: BM1977,102
Sample source 3: The Natural History Museum, National Museums of Scotland	Source location 3: Cromwell Road, London, SW7 5BD, UK, Edinburgh, UK	Color: Bronze
Other: X-ray powder diffraction pattern of this sample displayed some differences c.f. PDF 26-1217 possibly due to preferred orientation in the PDF sample, spectrum differs from that shown in the original description (Mumpton)	Application: Transmission FTIR spectroscopy	Mode: Tran
Literature Reference: Jones, G. C., and B. Jackson. Infrared Transmission Spectra of Carbonate Minerals. London: Chapman & Hall, 1993., Delvanaz, H., and R. Allmann. "Fe-brucite, Coalingite and Pyroaurite in the System MgO-Fe-O2-H2O(CO2)." Proceedings and Posters: 66th Annual Meeting of the German Mineralogical Society, Fortschritte Der Mineralogie, Beiheft 66.1 (1988): 23., Mumpton, F. A., H. W. Jaffe, and C. S. Thompson. "Coalingite, a New Minderal from the New Idria Serpentine, Fresno and San Benito Counties, California." American Mineralogist 50.11, 12 (1965): 1893-913., Pastor, R. J., and H. F. W. Taylor. "Crystal Structure of Coalingite." Mineralogical Magazine 38.295 (1971): 286-94.	Originating institution name: Natural History Museum, National Museums of Scotland	Originating institution acronym: NHM
Linear formula: Fe2Mg10(CO3)(OH)24*2H2O	CAS registry no: 12179-78-1	Other analytical methods: EDS (Mg:Fe:Mn=9:2:0.3), SEM, XRD (7962F NHM std=coalingite)