Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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The chemical composition and shape of inclusion of amethyst

자수정 내포물의 형상과 화학조성에 관한 연구

  • Yoon, Si-Nae (Department of Gemology, Daegu Polytechnic College) ;
  • Song, Young-Jun (Department of Materials and Metallurgical Engineering, Kangwon Univ.) ;
  • Yon, Seog-Joo (Department of Gemological Engineering, Dongshin University)
  • 윤시내 (대구산업정보대학 보석감정과) ;
  • 송영준 (강원대학교 재료금속공학과) ;
  • 연석주 (동신대학교 보석귀금속과)
  • Received : 2010.09.27
  • Accepted : 2010.10.12
  • Published : 2010.10.31
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Abstract

This study was carried out for the purpose of obtaining the basic data for identifying the origin of amethyst. For this, the three dimensional shapes of inclusions contained in various amethyst were observed with Stereo Zoom microscope. The shape and chemical composition of cross section of solid inclusion and the chemical composition of evaporite were investigated by SEM-EDS. The evaporite is made from evaporating of liquid inclusion which is flowed out of amethyst sample by decompressing. Lastly, The trace mineral composition of amethyst was investigated by ICP-AES after digesting the amethyst sample with HF-$H_2SO_4$ solution.

본 연구는 자수정의 산지에 따른 내포물의 성상 변화를 조사함으로써 자수정의 산지 감별을 위한 기초자료를 얻을 목적으로 수행되었다. 자수정에 포획되어 있는 내포물의 삼차원적 형상을 입체현미경으로 관찰하여 그 특징을 조사하였고, 각 내포물 중 고체내포물 단면의 형상 및 화학조성을 SEM/EDS로 조사하였으며, SEM/EDS 관찰을 위한 감압코팅과정에서 액상포유물의 파괴와 증발에 의해 생성되는 수지상 무늬의 형상과 화학조성을 분석함으로써 액상포유물의 조성도 조사하였다. 아울러 각 자수정 시료를 플루오르화수소산으로 처리하여 완전 용해시킨 다음 ICP-AES를 이용하여 각종 자수정에 함유되어 있는 미량 성분의 농도를 정밀하게 분석하여 고찰하였다.

Keywords

References

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