1. Home>
  2. Search IRUG Spectral Database>
  3. Interactive IRUG Spectrum

Interactive IRUG Spectrum

Section: 6 Minerals and pigments (MP) Page: 476

 Copyright © 1993-2024 Infrared and Raman Users Group (IRUG)


Details

IRUG filename:
IMP00476
Data type:
Infrared
IRUG material class:
Minerals and pigments (MP)
Sample type:
Reference material
Common name(s):
Sjogrenite
Chemical/botanical name(s):
Hydrated carbonate with hydroxyl or halogen (class)
Source location 1:
Langban, Filipstad, Varmland, Sweden
Sample source 2:
British Museum
Source location 2:
Great Russell Street, London, WC1B-3DG, UK
Sample identifier 2:
BM1926,1222
Sample source 3:
The Natural History Museum
Source location 3:
Cromwell Road, London, SW7 5BD, UK,
Color:
Straw-colored
Other:
Dimorphous with pyroaurite, spectrum is identical to that of pyroaurite
Application:
Transmission FTIR spectroscopy
Mode:
Tran
Literature Reference:
Jones, G. C., and B. Jackson. Infrared Transmission Spectra of Carbonate Minerals. London: Chapman & Hall, 1993. Allmann, R. "Supplemental Information on the Spectrum of Pyroaurite and Sjogrenite." Neues Jahrbuch Fur Mineralogie, Monatshefte (1969): 552-58. Ingram, L., and H. F. W. Taylor. "The Crystal Structures of Sjogrenite and Pyroaurite." Mineralogical Magazine 36 (1967): 465-79. Frondel, C. "Constitution and Polymorphism of the Pyroaurite and Sjogrenite Groups." American Mineralogist 26 (1941): 295-315.
Originating institution name:
Natural History Museum, National Museums of Scotland
Originating institution acronym:
NHM
Molecular formula:
C H24 Fe2 Mg6 O23
Linear formula:
Mg6Fe23+(CO3)(OH)16*4H2O
Other analytical methods:
EDS (Mg:Fe=approx. 3:1 with trace Si), SEM, XRD (6161 NHM std=sjogrenite)