Iseite, Mn2Mo3O8, a new mineral from Ise, Mie Prefecture, Japan

• NISHIO-HAMANE Daisuke

  The institute for Solid State Physics, University of Tokyo

• TOMITA Norimitsu

  Department of Earth Science, Faculty of Science, Ehime University

• MINAKAWA Tetsuo

  Department of Earth Science, Faculty of Science, Ehime University

• INABA Sachio

  Inaba-Shinju Corporation

書誌事項

タイトル別名

• Iseite, Mn₂Mo₃O₈, a new mineral from Ise, Mie Prefecture, Japan

抄録

Iseite, Mn₂Mo₃O₈, a new mineral that is a Mn-dominant analogue of kamiokite, is found in the stratiform ferromanganese deposit, Shobu area, Ise City, Mie Prefecture, Japan. It is the first mineral species that includes both Mn and Mo as essential constituents. Iseite is iron-black in color and has a submetallic luster. It occurs as aggregates up to about 1 mm in size made of minute crystals (<20 μm). Iseite has a zoned structure closely associated with undetermined Mn-Fe-Mo oxide minerals with hexagonal forms, and it occasionally coexists with small amounts of powellite. Its Mohs hardness is 4-5, and its calculated density is 5.85 g/cm³. The empirical formula of iseite is (Mn_1.787Fe_0.193)_Σ1.980Mo_3.010O₈. Its simplified ideal formula is written as Mn₂Mo₃O₈. The mineral is isostructural with kamiokite (hexagonal, P6₃mc). The unit cell parameters are a = 5.8052 (3) Å, c = 10.2277 (8) Å, V = 298.50 (4) ų, and Z = 2. The Rietveld refinement using synchrotron radiation (λ = 0.413 Å) powder XRD data converges to R_wp = 3.11%, and confirms two independent Mn sites—tetrahedral and octahedral—in the crystal structure of iseite, indicating the structure formula Mn^IVMn^VIMo₃O₈.

収録刊行物

• Journal of Mineralogical and Petrological Sciences

  Journal of Mineralogical and Petrological Sciences 108 (1), 37-41, 2013

  一般社団法人　日本鉱物科学会

キーワード

• Iseite
• Mn₂Mo₃O₈
• Kamiokite
• Fe₂Mo₃O₈
• Ise city

詳細情報

• CRID: 1390001206544903296
• NII論文ID: 10031138460
• NII書誌ID: AA11460926
• DOI: 10.2465/jmps.120621c
• COI: 1:CAS:528:DC%2BC3sXosFKlsbY%3D
• ISSN: 13493825
• ISSN: 13456296
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
  • KAKEN
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