한국광물학회지 (Journal of the Mineralogical Society of Korea)
- 제6권2호
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- Pages.145-155
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- 1993
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- 1225-309X(pISSN)
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- 2288-7172(eISSN)
산청지역 회장암내 단사녹니석의 풍화에 의한 녹니석/버미큘라이트 혼합층 광물 및 할로이사이트의 생성
Formation of Mixed-layered Chlorite/Vermiculite and Halloysite from Clinochlore by Weathering in Anorthosite in the Sancheong District
- Jeong, Gi Young (Department of Geology, Andong National University) ;
- Kim, Soo Jin (Department of Geological Sciences, Seoul National University)
- 발행 : 1993.12.01
초록
산청지역 회장암에 함유된 녹니석이 풍화되면서 겪는 광물학적, 조직학적, 화학적 변화를 X선 회절분석, 주사전자현미경 및 전자현미분석을 이용하여 연구하였다. 회장암에 함유된 녹색의 녹니석은 함철단사녹니석으로서 구조상 IIb형에 속한다. 단사녹니석은
Mineralogical, textural, and chemical changes of chlorite by weathering in anorthosite in the Sancheong district were stucdied using X-ray diffraction, scanning electron microscopy, and electron microprobe analysis. Chlorite in anorthosite corresponds to ferroan clinochlore with IIb structural type. It weatheres firstly to regularly mixed-layered chlorite/vermiculite(C/V) and then, to halloysite without the intermediate stage of vermiculite. Clinochlore packet cleaves and transforms to several thin packets of C/V, which subsequently change to halloysite developint fan-sharped structures by large volume increase. Direct halloysitization of C/V is attributed to the rapid weathering of anorthosite.
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