Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
권호 표지

Mineralogical Characteristics and Formation Processes of Zonal Textures in Hydrothermal Epidote from the Bobae Sericite Deposit

보배 견문모 광상에서 산출하는 녹염석의 누대구조의 특징과 발달과정

  • Published : 2001.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

Zoned epidotes formed by the propylitic alteration of the Bobae sericite deposit in western Pusan show complex compositional zoning patterns, such as multiple growth zoning, oscillatory zoning, patchy zoning and irregular zoning. The complex zoned epidote, in general, shows AI-rich cores and Fe-rich rims. Pistacite component (Ps) in the epidote ranges from 18.5 to 74.3 mot.%. Remnant textures in multiple growth zoning indicate that the earlier zone was partially resorbed prior to growth of later one. Multiple growth zoning and oscillatory zoning suggest that hydrothermal system underwent rapid changes and fluctuations in fluid chemistry, redox condition, or temperature.

부산 보배견운모 광상의 프로필리틱 열수변질대에서 형성된 녹염석은 다양한 누대구조를 수반하는데, 다중결정성장 누대구조, 진동누대구조, patchy누대구조 및 강도가 약한 불규칙한 누대구조가 특징적이다. 누대구조는 주로 열수용 액의 AI Fe의 활동도에 좌우되며, 전반적으로 결정의 중심부에서는 AI, 가장자리에서는 Fe의 함량이 높다. 녹염석 의 Ps는 18.5-34.3 mot.% 범위이다. 여러 결정이 중첩하여 형성된 누대구조에서는 잔류조직이 부분적으로 흡수용해 되었으며, 이후에 결정들이 새로 성장하였다. 다중결정성장 누대구조나 진동누대구조는 열수시스템의 유체의 화학조성, 산화환원전위, 온도 등과 같은 물리화학적 변수들이 급격하게 변동하였음 지시한다

Keywords

References

  1. 자원환경지질 v.28 부산보배 견운모광상의 산출상태와 생성환경 문지원;문희수
  2. Nature v.294 Oscilatory zoning: a pathological case of crystal growth Allegre, C.J.;Provost, A.;Jaupart, C.
  3. Water-Rock Interaction Formation of zoned epidote in hydrothermal systems Arnason, J.G.;Bird, D.K.;Kharaka, Y.K.(ed.);Maest, A.S.(ed.)
  4. Can. Miner. v.29 Thermobarometry using mutil-equilibrium calculations: A new technique with petrological applications Berman, R.G.
  5. Am. Jour. Sci. v.281 Chemical interaction of aqueous solutions with epidote-feldspar mineral assemblages in geologic systems. Ⅱ. Equilibrium constraints in metamorphic/geothermal processes Bird, D.K.;Helgeson, H.C.
  6. Econ. Geol. v.79 Cale-silicate mineralization in active geothermal systems Bird, D.K.;Schiffman, P.;Elders, W.A.;Williams, A.E.;McDowell, S.D.
  7. Jour. Geo-phys. Res, v.93-B11 Compositional, order/disorder, and stable isotope characteristics of Al-Fe epidote, state 2-14 drill hole, Salton Sea geothermal system Bird, D.K.;Cho, M.;Janik, C.J.;Liou, J.G.;Caruso, L.J.
  8. Jour. Geophys. Res. v.93-B11 Epidote-bearing veins in the state 2-14 drill hole: Implications for hydrothermal fluid composition Caruso, L.J.;Bird, D.K.;Cho, M.;Liou, J.G.
  9. Ph D Thesis Mineralogy and genesis of napseok (sericite, pyrophyllite, dickite) in the Kimhae area, Korea Choo, C.O.
  10. Jour. Mineral. Soc. Korea v.9 FTIR and Mossbauer spectroscopic studies on the hydrothermal epidote from the Bobae clay deposit, Pusan, Korea Choo, C.O.;Kim, S.J.
  11. N. Jb. Mineral. Mh. Occurrence of chlorite and interstratified 7-Å phase in rhyodacitic tuff, south-eastern Korea, and implications for hydrothermal alteration conditions Choo, C.O.;Kim, S.J.
  12. 11st Annual Goldschmidt Conference Program Complex zoned tourmaline in the diaspore nodule from a hydrothermal kaolin deposit, Miryang, south Korea Choo, C.O.;Kim, J.J.;Kim. Y.
  13. In Rock-forming Minerals(2nd ed.) v.1B Disilicates and ring silicates Deer, W.A.;Howie, R.A.;Zussman, J.
  14. Am. Mineral. v.69 $Al-Fe^{3+}$ and $Ca-Sr^{2+}$ epidotes in metagreywacke-quartzofeldspathic schist, Southern Alps, New Zealand Grapes, R.;Watanabe, T.
  15. Science v.209 Oscillatory zoning in plagioclase feldspar Haase, C.S.;Chadam, J.;Feinn, D.;Ortoleva, P.
  16. Am. Mineral. v.59 Amphibole pairs, epidote minerals, chlorite and plagioclase in metamorphic rocks, northern Sierra Nevada, California Hietanen, A.
  17. Am. Mineral. v.82 Statistical characteristics and origin of oscillatory zoning in crystals Holten, T.;Jamtveit, B.;Meakin, P.;Cortini, M.;Blundy, J.;Austrheim, H.
  18. Geochim. Cosmochim. Acta. v.64 Noise and oscillatory zoning of minerals Holten, T.;Jamtveit, B.;Meakin, P.
  19. Am. Mineral. v.76 Oscillatory zonation patterns in hydrothermal grossular-andradite garnet: Nonlinear dynamics in regions of immiscibility Jamtveit, B.
  20. Geology v.21 Zonation patterens of skarn garnets: Records of hydrothermal system evolution Jamtveit, B.;Wogelius, R.A.;Fraser, D.G.
  21. Am. Mineral. v.53 Hydrothermal epidote formed in the Salton Sea geothermal system, California. Keith, T.E.C.;Muffler, L.J.P.;Cremer, M.
  22. Jour. Mimer. Soc. Korea. v.4 Mineralogy and genesis of hydrothermal deposits trom the southeasten part of Korean peninsula: (2) Bobae sericitic deposit Kim, S.J.;Choo, C.O.;Park, H.I.;Noh, J.H.
  23. Am. Mineral. v.79 A nonlinear dynamic model of oscillatory zoning in plagioclase L'Heureux, I.;Fowler, A.D.
  24. Econ. Geol. v.90 Chemical variation and significance of tourmaline from southwest England London, D.;Manning, D.C.
  25. Contrib. Mineral. Petrol. v.57 The Al-Fe(Ⅲ) epidote miscibility gap in a metamorphic profile through the Penninic series of the Tauern Window, Austria Raith, M.
  26. Geochem. Jour. v.18 Compositional variations in epidote from geothermal areas Shikazono, N.
  27. Am. Jour. Sci. v.276 The origin of oscillatory zoning in plagioclase: A diffusion and growth controlled model Sibley, D.F.;Vogel, T.A.;Walker, B.M.;Byerly, G.
  28. Am. Mineral. v.80 Oscillatory zoning in meteoritic forsterite Steele, I.M.
  29. Am. Mineral. v.84 Complex zoning in apatite from the Idaho batholith: A record of magmamxing and intracrystalline trace element diffusion Tepper, J.H.;Kuehner, S.M.
  30. Mineral. Mag. v.55 Oscillatory zoning in metamorphic minerals: an indicator of infiltration metasomatism Yardley, B.W.D.;Rochelle, C.A.;Barnicoat, A.C.;Lloyd, G.E.