Stibiotantalite-group minerals in a lithium pegmatite from Nagatare, Fukuoka Prefecture, Japan.

• BANNO Yasuyuki

  National Institute of Advanced Industrial Science and Technology

• BUNNO Michiaki

  National Institute of Advanced Industrial Science and Technology

• HARUNA Makoto

  National Institute of Advanced Industrial Science and Technology

• OBA Masahiro

  Department of Chemistry, University of Tsukuba

抄録

Stibiotantalite-group minerals were found from a lithium pegmatite, Nagatare, Fukuoka Prefecture, Japan. Two samples were examined; one is stibiotantalite, compositionally close to the ideal formula SbTaO₄ and the other is a member of bismutotantalite-stibiotantalite series. The stibiotantalite grain is homogeneous in composition, and has high Ta/(Ta+Nb) values of 0.91-0.92. The bismutotantalite-stibiotantalite grain is very heterogeneous, and the ranges of Bi/(Bi+Sb) and Ta/(Ta+Nb) values are 0.26-0.54 and 0.71-0.81, respectively. This grain is heavily veined by Bi-poorer stibiotantalite. Compositional variation in Bi/(Bi+Sb) of this grain indicates the existence of solid solution between bismutotantalite and stibiotantalite with relatively wide range. The unit cell parameters of the stibiotantalite and the bismutotantalite-stibiotantalite are; orthorhombic a=4.916(1), b=11.811(1), c=5.536(1) Å and a=4.945(1), b=11.794(2), c=5.592(1) Å, respectively.

収録刊行物

• Journal of Mineralogical and Petrological Sciences

  Journal of Mineralogical and Petrological Sciences 96 (5), 205-209, 2001

  一般社団法人　日本鉱物科学会

キーワード

• Geology
• Geophysics

詳細情報

• CRID: 1390282681522349184
• NII論文ID: 10007407894
• NII書誌ID: AA11460926
• DOI: 10.2465/jmps.96.205
• ISSN: 13493825
• ISSN: 13456296
• 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