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Morphological Diversity of Tremolite-actinolite Series Amphiboles with Implications to the Evaluation of Naturally Occurring Asbestos

투각섬석-양기석 계열 각섬석의 형태적 다양성과 자연 석면 평가에서의 의미

  • Received : 2012.06.13
  • Accepted : 2012.06.25
  • Published : 2012.06.30

Abstract

Electron microscopy of the tremolite-actinolite series amphiboles from the naturally occurring asbestos locality showed the morphological diversity including fibrous, acicular, and prismatic. Very thin, long, and flexible fibers of constant width form ropy bundles or mats. Acicular particles are slightly thick, long, elastic, and easily separated from the bundle of parallel rods. Acicular fragments of lower aspect ratio are formed during the crushing of the amphibole prism. Morphological features of the amphiboles are different depending on their localities and vary in a specimen. Morphological continuum between amphibole fiber and prism requires the establishment of reliable identification criterions and sample preparation protocol based on the relation between carcinogenicity and morphological features.

Keywords

Asbestos;tremolite;actinolite;fibrous;acicular;prismatic;carcinogenic

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