豊栄鉱山一号すず鉱床のクトナホラ石，とくにその化学組成の鉱物共生

• 宮久 三千年

  愛媛大学理学部地質学教室

• 原田 進造

  山口県立萩高等学校

• 石橋 澄

  九州大学理学部地質学教室

• 渋谷 五郎

  山口大学教養部鉱物学研究室

• 本村 慶信

  九州大学理学部地質学教室

書誌事項

タイトル別名

• Kutnahorite from Hoei Tin Mine, with Special Concern to Its Chemical Composition and Mineral Paragenesis

抄録

In this paper, the paragenesis of minerals in the Hoei mine is presented with some remarks on the mineralogical properties of kutnahorite.<BR>The Ichigo (no.1) ore body of the Hoei mine is a massive deposit of Sn, Zn and iron sulfide formed by replacement of the Silurian limestone bed. From this ore body, there have been found various kinds of ore and gangue minerals such as: garnet, clinopyroxene, axinite, tourmaline, vesuvianite, quartz, pyrrhotite, chalcopyrite, arsenopyrite, pyrite, marcasite, sphalerite, galena, native bismuth, herzenbergite, franckeite, jamesonite, cassiterite, stannite, malayaite, fluorite, sericite and carbonate minerals. The species of carbonate minerals are ferromanganoan dolomite, magnesian kutnahorite, kutnahorite, calcian rhodochrosite, ferroan magnesite and manganoan calcite, and they have been crystallized at the later stage of mineralization in this mine.<BR>The kutnahorite in this mine is white, yellow or pinkish in color, and platy or leaf-like in external shape, reaching to 5 cm in maximum length. Its specific gravity ranges from 2.98 to 3.18 by picnometer method. Optically negative, and some examples of refractive indices are ω=1.717-1.731, ε=1.524-1.529. Unit cell constants, a₀ = 4.861-4.869 Å, c₀=16.24-16.37 Å. The range of chemical composition of kutnahorite is fairly wide, as shown in Table 4 and 5.<BR>Judging from the mode of occurence, microscopic observations and the compositional changes detected by EPMA, the crystallization sequence of the carbonate minerals is suggested as follows : dolomite-ferromanganoan dolomite-magnesian kutnahorite-kutnahorite-calcian rhodochrosite-manganoan calcite.

収録刊行物

• 鉱山地質

  鉱山地質 25 (133), 347-357, 1975

  資源地質学会

キーワード

• クトナホラ石
• 豊栄鉱山
• 錫鉱床
• 化学組成

詳細情報

• CRID: 1390282681503382528
• NII論文ID: 130003639385
• DOI: 10.11456/shigenchishitsu1951.25.347
• ISSN: 00265209
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可