Browse > Article
http://dx.doi.org/10.9719/EEG.2017.50.1.35

Ore Mineralization of The Hadong Fe-Ti-bearing Ore Bodies in the Hadong-Sancheong Anorthosite Complexes  

Lee, In-Gyeong (Department of Earth and Environmental Sciences, Chungbuk National University)
Jun, Youngshik (Department of Earth and Environmental Sciences, Chungbuk National University)
Choi, Sang-Hoon (Department of Earth and Environmental Sciences, Chungbuk National University)
Publication Information
Economic and Environmental Geology / v.50, no.1, 2017 , pp. 35-44 More about this Journal
Abstract
The Hadong-Sancheong Proterozoic anorthosite complex occurs in the southwestern region of the Ryongnam massif. The geology of the area mainly consists of metamorphic rocks of the Jirisan metamorphic complex as basement rocks, charnockite, and the Hadong-Sancheong anorthosite, which are intruded by the Mesozoic igneous rocks. Hadong-Sancheong anorthosite complex is divided into the Sancheong anorthosite and the Hadong anorthosite which occur at north-southern and south area of the Jurassic syenite, respectively. The Hadong Fe-Ti-bearing dike-like ore bodies developed intermittently in the Hadong anorthosite with north-south direction and extend about 14 km. The Hadong Fe-Ti-bearing ore bodies consist mainly of magnetite and ilmenite with rutile, titanite, and minor amounts of sulfides(pyrrhotite, pyrite, chalcopyrite and sphalerite). The Hadong Fe-Ti-bearing ore bodies show a paragenetic sequence of magnetite-ilmenite ${\rightarrow}$ magnetite-ilmenite-pyrrhotite ${\rightarrow}$ ilmenite-pyrrhotite-rutile-titanite(and/or pyrite) ${\rightarrow}$ sulfides. Equilibrium thermodynamic interpretation of the mineral paragenesis and assemblages indicate that early Fe-Ti-bearing ore mineralization in the ore bodies occurs at about $700^{\circ}C$ which corresponds to oxygen fugacity of about $10^{-11.8}{\sim}10^{-17.2}$ atm with the decrease tendency of sulfur fugacity to about $10^0$ atm as equilibrium of $Fe_3O_4-FeS$. The change of ore mineral assemblages from Fe-Ti-bearing minerals to sulfides in late ore mineralization of the ore bodies indicates that oxygen fugacity would have slightly decreased to ${\geq}10^{-20.2}$ atm and increased sulfur fugacity to ${\geq}10^0$ atm.
Keywords
Hadong-Sancheong; anorthosite; Fe-Ti-bearing ore bodies; ilmenite; oxygen fugacity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Shikazono, N. (1985) A Comparison of Temperatures Estimated from the Electrum-Sphalerite-Pyritear-Gentite Assemblage and Filling Temperatures of Fluid Inclusions from Epithermal Au-Ag vein-type Deposits in Japan. v.80, p.1454-1424.
2 Son, C.M. and Cheong, J.G. (1972) On the origin of anorthosite in the area of Hadon Sancheong, Gyeongsangnamdo, Korea. J. Kor. Inst. Mining Geol., v.5, p.1-20.
3 Spry, P.G. (2000) Sulfidation and Oxidation Haloes as Guides in the Exploration for Metamorphosed Massive Sulfide Ore. Reviews in Econ. Geol., p.149-161.
4 Choi, Y.K., Cheong, C.H., Lee, D.S., Kim, C.W. and Kim, S.J. (1964) Geological map of the Danseong sheet, 1:50,000, Korea Institute of Geoscience and Mineral Resources. 48p.
5 Froese, E. (1977) Oxidation and sulphidation reactions. In Short course in application of thermodynamics to petrology and ore deposits, Mineralogical association of Canada, p.84-98.
6 Froese, E.A. and Gunter, E. (1976) A Note on the Sulfur Vapor Equilibrium. Econ. Geol., 71, 1589-1594.   DOI
7 Hass, J.L., Jr. and Robie, R.A. (1973) Thermodynamic Data for Wüstite, $Fe_{0.947}O$, Magmetite, $Fe_3O_4$, and Hematite, $Fe_2O_3$, (abstract). Am. Geophys. Union, v.54, p.483.
8 Jeong, J.G. (1980) Petrologic Studies on Anorthositic Rocks in Handong-Sancheing District, Korea. Jeornal of the Geological Society of Korea, v.18, p.83-108.
9 Jeong, J.G. (1982) Petrologic studies on anorthositic rocks in Hadon-Sancheong district, Korea. Jour. Geol. Soc. Korea, v.18, p.83-108.
10 Jeong, J.G. (1987) Magmatic differentiation of the anorthositic rocks in Hadong-Sancheong area, Jour. Geol. Soc. Korea, v.3, p.216-228.
11 Jeong, J.G., Kim, W.-S. and David H. Watkinson (1989) Geologic structure of Hadong anorthositic rocks and associated titanium orebody. Jour. Geol. Soc. Korea, v.25, p.98-111.
12 Ashwal, L.D. (1993) Anorthosites. Springer-Verlag, Berlin, 422.
13 Barton, P.B. Jr., P. III and Toulmin (1964) The Electrum Tarnishing Method for Determination of the Fugacity of Sulfur in Laboratory Sulfide Systems. Geochim. Comochim., Acta, v.25, p.619-640.
14 Jeong, J.G., Kim, W.-S. and Seo, B.-M. (1991) Differentiation of the plutonic rocks in Saengcho-myon, Sancheong-gun: trace element modeling for the magmatic differentiation. J. Miner. Soc. Korea, v.4, p.69-89.
15 Jung, J.S., Kim, J.-S., Cho, H., Song, C.-W., Son, M., Ryoo, C.-R., Chi, S. and Kim, I.-S. (2010) Occurrence and deformation of Fe-Ti ores from the Proterozoic Hadong anorthosites, Korea. Jour. Petrol. Soc. korea. v.19, p.31-49.
16 Kang, S.-W., Yoo, B.-W., Ryoo, C. and Kim, Y.-J. (1994) Petrochemistry of plutons in the Hamyang-Macheon Area, Gyeongnam. Jour. Korean Earth Science Society, v.15, p.100-114.
17 Kim, D.-Y., Song, Y.-S. and Park, K.-H. (1998) Petrology, geochemistry and geological chronology of charnockite of Eastern Jirisan area. 53rd Abstract Book of Geol. Soc. korea, p.35-36.
18 Kim, O.J., Hong, M.S., Yun, S.K., Park, H.I. and Park, Y.D. (1964) Geological map of the Unbong sheet, 1:50,000, Korea Institute of Geoscience and Mineral Resources.
19 Kim, N.J. and Gang, P. J. (1965) Geological map of the Jinkyo sheet, 1:50,000, Korea Institute of Geoscience and Mineral Resources.
20 Kim, O.J., Hong, M.S., Park, H.I., Park, Y.D., Kim, G.T. and Yun, S. (1963) Geological map of the Sancheong sheet, 1:50,000, Korea Institute of Geoscience and Mineral Resources.
21 Kim, S.Y., Seo, J.R., Yang, J.I. and Kim, S.B. (1991) Geology and ore deposits of rare elements in Hadong and Uljin area, Korea. Korea Institute of Geology, Mining and Materials, 156p.
22 Ko, B.K. (2006) Petrological and geochemical studies of the petrogenesis of the Hadong-Sancheong anorthosite complex. Ph. D. Thesis, Kangwon National University, 154p.
23 Koh, S.-M., Yoo, J.-H., Kim, Y.-U., Lee, H.-Y., Kim, S.-Y. and Song, M.-S. (2003) Evalution and exploration of titanium and feldspar deposits in Hadong-Sancheong-Hapcheon area. Korea Institute of Geoscience and Mineral Resources, 70p.
24 Koh, S.-M. (2010) Occurrences of Ilmenite Deposits in Hadong-Sancheong Area. J. Miner. Soc. Korea, v.23, p.25-37.
25 Kwon, S.T. and Jeong, J.G. (1990) Preliminary Sr-Nd Isotope Study of the Hadong-Sancheong Anorthositic Rocks in Korea: Implication for Their Origin and for the Precambrian Tectonics. Journal of the Geological Society of Korea, v.26, p.341-349.
26 Lee, I.G., Park, S.J., Chi, S.J. and Choi, S.H. (2011) Genesis of Hadong-Sancheong Ti-bearing ore body, 2015 Abstract Book of the Korean Soc. of Econ. and Environ, Geol., p.251.
27 Park, K.-H., Kim, D.-Y. and Song, Y.-S. (2001) Sm-Nd mineral ages of charnockites and ilmenite-bearing anorthositic rocks of Jirisan area and their genetic relationship. Jour. Petrol. Soc. Korea, v.10, p.27-35.
28 Lee, J.M., Jeong, J.G. and Kim, W.S. (1999) The preliminary study on the evolution of Hadon anorthositic rocks and their genetic relations with ilmenite-bearing ore bodies, Korea. Jour. Geol. Soc. Korea, v.35, p.321-326.
29 Lee, S.M. (1980) Some metamorphic aspects of the meta-pelites in Jirisan (Hadong-Sancheong) region. Jour. Geol. Soc. Korea, v.16, p.1-15.
30 Nam, G.S., Ryu, W.S. and Lee, J.D. (1989) Geological map of the Hadong sheet, 1:50,000, Korea Institute of Geoscience and Mineral Resources.
31 Park, Y.-R., Ko, B.K. and Lee, K.-S. (2004) Oxygen and hydrogen isotope studies of fluid-rock interaction of the Hadong-Sancheong anorthositic rocks. Jour. Petrol. Soc. Korea, v.13, p.224-237.
32 Richardson, F.D.J. and Jeffes, H.E. (1952) The Thermodynamics of Substances of Interest in Iron and Steel Making III-Sulphides. J. Iron Steel Inst., v.71, p.165-175.
33 Robie, R.A. and Waldbaum, D.R. (1968) Thermodunamic Properties of Minerals and Related Sbubstances at 298K ($25^{\circ}C$ and atmosphere (1.013bar) Pressure and at Higher Temperature. U. S. Geol. Suv. Bull. 1259p.
34 Scott, S.D. and Barnes, H.L. (1971) Sphalerite Geothermometry and Geobarometry. Econ. Geol., v.66, p.653-669.   DOI
35 Seo, J.R., Park, S.W., Lee, P.G., Oh, M.S. and Lee, B.J. (1993) Study of rare mineral resources in the Hadong area. Korea Institute of Geology, Mining and Materials, 72p.