A Moessbauer study of pentacoordinated ferric iron in orthoericssonite.

• HÅLENIUS Ulf

  Department of Mineralogy, Swedish Museum of Natural History.

抄録

Mössbauer spectra of orthoericssonite in the temperature range 78–547 K reveal very low quadrupole splittings (QS=0.26–0.31 mm/s) for pentacoordinated Fe³⁺, which is shown to be a consequence of the size of the angle between equatorial bonds and the apical bond of this site. At temperatures above 298 K the Mössbauer centroid shift (CS) decreases linearly at −8.0 (±1.1) ·10⁻⁴mm·s⁻¹ ·deg⁻¹, which is in good agreement with the theoretical value of −7.3 ·10⁻⁴mm ·s⁻¹ ·deg⁻¹. In agreement with previous chemical analyses of the studied samples minor absorption doublets caused by the presence of ferrous iron were recorded in the spectra of a sample from the Hijikuzu mine, Japan. Mössbauer spectra indicate that ferrous iron substitutes for manganese randomly at all three types of octahedral sites found in the orthoericssonite structure.

収録刊行物

• Ｍｉｎｅｒａｌｏｇｉｃａｌ　Ｊｏｕｒｎａｌ

  Ｍｉｎｅｒａｌｏｇｉｃａｌ　Ｊｏｕｒｎａｌ 17 (8), 363-371, 1995

  一般社団法人　日本鉱物科学会

キーワード

• General Earth and Planetary Sciences
• General Environmental Science

詳細情報

• CRID: 1390282681522053248
• NII論文ID: 10008771279
• NII書誌ID: AA00739590
• DOI: 10.2465/minerj.17.363
• ISSN: 18814174
• ISSN: 05442540
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可