地表条件下における長石類の人工変質―酸性雨の岩石鉱物に与える影響の研究（その１）

• 坂本 尚史

  岡山理科大学教養部

• 小林 祥一

  岡山理科大学教養部

書誌事項

タイトル別名

• Artificial Alteration of Feldspars under Earth Surface Condition-Studies on the Influence of Acid Rain on Rocks and Minerals(Part 1).
• Studies on the Influence of Acid Rain on Rocks and Minerals (Part 1)
• 酸性雨の岩石鉱物に与える影響の研究 (その1)

抄録

Three natural feldspars-albite, anorthite and microcline-are artificially weathered for 360 days using a Soxhlet extraction apparatus with distilled water and 0.1N HC1 solution. Testing results: 1) At the early stage of weathering, feldspars started to dissolve along thier cleavage while small etch pits appeared on flat cleavage surface. As weathering continues, a new products-boehmite-was formed on the feldspar surface. The reaction rate of anorthite was larger than the other feldspars, which was promoted by HC1 solution. 2) Boehmite was formed on all feldspars. However, in the case of anorthite, gibbsite and nordstrandite were formed additionally. 3) Kaoline minerals, the most populous clay minerals in naturally weathered feldepers, were not recognized in the present experiment. No kaoline minerals were produced due to the circulatation of the solution which was faster than in natural condition.<BR>Early results suggest possible apprication for interpreting environmental influences of acid-rain.

収録刊行物

• 粘土科学

  粘土科学 32 (2), 108-120, 1992

  一般社団法人 日本粘土学会

キーワード

• feldspars
• weathering
• boehmite
• SEM
• acid-rain

詳細情報

• CRID: 1390001204113332864
• NII論文ID: 130004307553
• DOI: 10.11362/jcssjnendokagaku1961.32.108
• ISSN: 21863563
• ISSN: 04706455
• 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