Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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Some Mineralogical and Physico-Chemical Properties of Fuller's Earths from Tertiary Sediments in South Korea

삼기층중(三紀層中)에서 산출(産出)되는 산성백토(酸性白土)에 관(關)한 광물학적(鑛物學的) 조성(組成) 및 물리화학적(物理化學的) 성질(性質)에 관(關)하여

  • Moon, Hee Soo (Non-metallic Division, Korea Institute of Energy and Resources) ;
  • Morgan, D.J. (Applied Mineralogy Unit, Institute of Geological Sciences)
  • Published : 1983.09.30
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Abstract

Fuller's earth deposits from Miocene sedimentary sequences in Gyeong Sang-do contain up to 95% Ca-montmorillonite accompanied by cristobalite, clinoptilolite, mordenite, quartz, feldspar and X-ray amorphous material. Differential thermal analysis, infrared and electron microscopic data are given for the montmorillonite component. The ease with which the exchangeable calcium of the montmorillonite could be replaced by sodium (to give a product with properties similar to that of a bentonite) was monitored by the Atterberg liquid limit test. Some samples tested as possible binders for foundry moulding sands gave results that compared favourably with material currently being used for this application. Many of the samples also met the OCMA specifications for clays used in drilling muds.

경상도(慶尙道) 지역(地域)의 삼기층중(三紀層中)에 배태(胚胎)되어진 산성백토(酸性白土)는 주(主)로 Ca-몽모리로나이트로 구성되며 이의 조성비(組成比)는 95%까지에 이른다. 이에 수반되는 광물(鑛物)은 크리스토발라이트, 석영(石英), 장석(長石), 삼정석광물(三井石鑛物) 및 비결정질(非結晶質)이 있다. 시차열분석(示差熱分析), 적외선 및 전자현미경에 의한 이들의 기본적인 특성(特性)을 기재하였고 물리적성질(物理的性質)을 섭성한계(涉性限界) 및 양이온교환능을 측정기재하였다. 이들 자원(資源)의 이용가능한 용도범위를 고찰하였다.

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