Infrared spectra of three M(I)M(III)S(2) type synthetic minerals (M(I)=Ag or Tl, M(III)=Sb or As)
Article (Published version)
MetadataShow full item record
The infrared spectra of three compounds of the M(I)M(III)S(2) type (smithite, AgAsS2; weissbergite, TlSbS2; and miargyrite, AgSbS2) were studied at room temperature (RT) and at the boiling temperature of liquid nitrogen (LNT). The infrared spectrum of smithite was compared with that of the formally analogous mineral lorandite, TlAsS2. Although the mentioned synthetic minerals have crystal structures which differ from each other, the infrared spectra of smithite and lorandite, on the one hand, and of weissbergite and miargyrite on the other, are similar. The analysis of the spectra indicate that the Tl-S interaction has a more pronounced ionic character than the Ag-S one.
Keywords:infrared spectra / synthetic minerals / smithite / lorandite / weissbergite / miargyrite
Source:Spectroscopy Letters, 1997, 30, 1, 79-87
- Marcel Dekker Inc, New York