• journal_title：European Journal of Mineralogy
• Contributor：Zhe LI ; Zhesheng MA ; Ming XIONG ; Nicheng SHI ; Danian YE ; Alexandr KHOMYAKOV
• Publisher：E. Schweizerbart'sche Verlagsbuchhandlung Science Publishers
• Date：2003-
• Format：text/html
• Language：en
• Identifier：10.1127/0935-1221/2003/0015-0707
• journal_abbrev：Eur J Mineral
• issn：0935-1221
• volume：15
• issue：4
• firstpage：707
• section：Articles

The mineral, triclinic astrophyllite, was investigated using the Mössbauer effect. The Mössbauer spectra of triclinic astrophyllite at 298 K, 180 K and 90 K were measured, and the quadrupole splitting distributions (QSDs) from the Mössbauer spectra were obtained by using a Voigt-based method for line shape analysis. The distortion parameters, the variances of the octahedral bond angles for triclinic astrophyllite, were calculated, and a site assignment was tentatively given based on the distortion parameters. According to the ratios of ferric to total iron obtained by the Mössbauer effect and the mean value of f(Fe³⁺(O))/f(Fe²⁺(O)), the chemical formula of triclinic astrophyllite was rewritten.