Asbestiform Tremolite Formed by Chert-Dolomite Reaction and Its Morphological Characteristics

처트-백운석 반응에 의한 석면상 투각섬석의 생성과 형태적 특성

  • Received : 2013.06.07
  • Accepted : 2013.06.20
  • Published : 2013.06.30


Diagenetic black chert nodules occur in the Paleozoic dolostone in Susan, Jecheon, Korea. They reacted with dolomite to form alteration rim around the nodules during the contact metamorphism probably related to the intrusion of biotite granite. In the earlier stage of alteration, talc and calcite replaced both the chert and dolomite, which were subsequently replaced by tremolite. Significant mass of tremolite occurs along the horizon enriched with chert nodules. Scanning electron microscopy and optical microscopy of the tremolite specimens revealed the elongated morphology of diverse aspect ratios coexisting in several mm scale. Non-asbestiform tremolite columns were also common as well as asbestiform fibrous bundles. Quantitative estimation of asbestos should be more cautious for naturally occurring materials because all the tremolite particles in the outcrop are not asbestiform. The occurrence of asbestiform tremolite in the Susan area indicates that a combination of chert-bearing dolostone, heat source, and aqueous fluids is one of the geological environments for the formation of asbestiform tremolite.


Dolomite;chert;tremolite;asbestos;electron microscopy;morphology


  1. Joesten, R. (1991) Local equilibrium in metasomatic processes revisited: diffusion-controlled growth of chert nodule reaction rims in dolomite. American Mineralogist, 76, 743-755.
  2. Koh, S.M. (2009) Occurrence and formation environments of asbestos minerals. In: Kim, S.J. (ed.), Asbestos Academy, Mineralogical Society of Korea, 18-34.
  3. Lee, M.S. and Park, B.S. (1965) The Geological map of Hwanggang-ni sheet with explanatory text. Geological Survey of Korea.
  4. Lower, H. and Meeker, G. (2002) Tabulation of asbestos-related terminology. USGS Open-File Report 02-458.
  5. McConnel, E.E. et al. (1990) Toxicology and cacinogenesis studies of tremolite. National Toxicology Program Technical Report Series No. 277. 183p.
  6. Mine Reclamation Corporation (2010) Guideline for the Reclamation of Asbestos Mine area. Mine Reclamation Corporation.
  7. The Mineralogical Society of Korea (2012) A study for the selection of asbestos-bearing materials and their reasonable managements. The Mineralogical Society of Korea.
  8. Pettijohn, F.J. (1975) Sedimetary rocks. Harper & Row, Publishers, New York.
  9. Strohmeier, B.R., Huntington, J.C., Bunker, K.L., Sanchez, M.S., Allison, K., and Lee, R.J. (2010) What is asbestos? and why is it important? Challenges of defining and characterizing asbestos. International Geological Review, 52, 801-872.
  10. Suzuki, K. (1977) Local equilibrium during the contact metamorphism of siliceous dolomites in Kasugamura, Gifu-ken, Japan. Contribution to Mineralogy and Petrology, 61, 79-89.
  11. Tilley, C.E. (1948) Earlier Stages in the Metamorphism of Siliceous Dolomites. Mineralogical Magazine, 28, 272-276.
  12. Woodford, D.T., Sisson, V.B., and Leeman, W.P. (2001) Boron metasomatism of the Alta stock contact aureole, Utah: Evidence from borates, mineral chemistry, and geochemistry. American Mineralogist, 86, 513-533.
  13. Yoon, K.T., Hwang, J.Y., Oh, J.H., and Lee, H. (2010) Characteristics of Tremolite Asbestos from Abandoned Asbestos Mines in Boryeong Area, Chungnam. Journal of the Mineralogical Society of Korea, 23, 73-84. (in Korean with English abstract).
  14. Davis, J.M.G., Addison, J., McIntosh, C., Miller, B.G., and Niven, K. (1991) Variations in the carcinogenicity of tremolite dust samples of differing morphology. Annals New York Academy of Sciences, 643, 473-490.
  15. Gunter, M.E., Belluso, E., and Mottana, A. (2007) Amphiboles: Environmental and health concerns. In: Hawthorne, F.C., Oberti, R. Della Ventura, G. Mottana, A. (eds.), Amphiboles: Crystal Chemistry, Occurrence and Health Issues, Reviews in Mineralogy and Geochemistry, Vol. 67, Mineralogical Society of America and the Geochemical Society, 453-516.
  16. Hoersch, A.L. (1981) Progressive metamorphism of the chert-bearing Durness limestone in the Beinin an Dubhaich, Isle of Skye: A reexamination. American Mineralogist, 66, 491-506.
  17. Jeong, G.Y. and Choi, J.B. (2012) Morphological Diversity of Tremolite-actinolite Series Amphiboles with Implications to the Evaluation of Naturally Occurring Asbestos. Journal of the Mineralogical Society of Korea, 25, 95-104. (in Korean with English abstract).

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  1. Occurrence and Mineralogical Characteristics of Asbestos in Dolostone at Ungdo, Seosan vol.47, pp.5, 2014,


Supported by : 한국석회석가공업협동조합