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Geochemical Environments of Copper-bearing Ore Mineralization in the Haman Mineralized Area  

Choi, Sang-Hoon (Department of Earth & Environmental Sciences, Chungbuk National University)
Publication Information
Economic and Environmental Geology / v.42, no.1, 2009 , pp. 1-8 More about this Journal
Abstract
The Haman mineralized area is located within the Cretaceous Gyeongsang Basin along the southeastern part of the Korean peninsula. Almost all occurrences in the Haman area are representative of copper-bearing polymetallic hydrothermal vein-type mineralization. Within the area are a number of fissure-filling hydrothermal veins which contain tourmaline, quartz and carbonates with Fe-oxide, base-metal sulfide and sulfosalt minerals. The Gunbuk, Jeilgunbuk and Haman mines are each located on such veins. The ore and gangue mineral paragenesis can be divided into three distinct stages: Stage I, tourmaline + quartz + Fe-Cu ore mineralization; Stage II, quartz + sulfides + sulfosalts + carbonates; Stage III, barren calcite. Equilibrium thermodynamic data combined with mineral paragenesis indicate that copper minerals precipitated mainly within a temperature range of $350^{\circ}C$ to $250^{\circ}C$. During early mineralization at $350^{\circ}C$, significant amounts of copper ($10^3$ to $10^2\;ppm$) could be dissolved in weakly acid NaCl solutions. For late mineralization at $250^{\circ}C$, about $10^0$ to $10^{-1}\;ppm$ copper could be dissolved. Equilibrium thermodynamic interpretation indicates that the copper in the Haman-Gunbuk systems could have been transported as a chloride complex and the copper precipitation occurred as a result of cooling accompanied by changes in the geochemical environments ($fs_2$, $fo_2$, pH, etc.) resulting in decrease of solubility of copper chloride complexes.
Keywords
Haman mineralized area; copper mineralization; mineral assemblage; solubility; copper chloride complexes;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Crerar, D.A. (1974) Solvation and deposition of chalcopyrite and chalcocite assemblages in hydrothermal solution. - Ph D. dissertation, Dept. of Geological Sciences, The Pennsylvania State University
2 Heo, C.H., Yun, S.T., Choi, S.H., Choi, S.G. and So, C.S. (2003) Copper mineralization in the Haman-Gunbuk Area, Gyeongsangnamdo-Province: Fluid inclusion and stable isotope study. Econ. Environ. Geol., v. 36, p. 75- 87   과학기술학회마을   ScienceOn
3 Ellis, A.J. and Golding, R.M. (1963) The solubility of carbon dioxide above 100oC in water and in sodium chloride solutions. Am. Jour. Sci., v 261, p. 47-60   DOI
4 Jin, M.S., Lee, S.M., Lee, J.S. and Kim, S.J. (1982) Lithochemistry of the Cretaceous granitoids with relation to the metallic ore deposits in Southern Korea. Jour. Geol. Soc. Korea , v. 18, p. 119-131
5 So, C.S., Chi, S.J. and Shelton, K.L. (1985) Cu-bearing hydrothermal vein deposits in the Gyeongsang Basin, Republic of Korea. Econ. Geol., v. 80, p. 43-56   DOI
6 So, C.S., Choi, S.H. and Shelton, K.L. (1997) Geochemistry and genesis of hydrothermal Cu deposits in the Gyeongsang Basin (Andong area): A link between porphyry and epithermal systems. N.Jb.Miner.Abh., v. 171, p. 281-307
7 Crerar, D.A. and Barnes, H.L. (1976) Ore solution chemistry V. Solubilities of chalcopyrite and chalcocite assemblages in hydrothermal solution at 200oC to 350oC. Econ. Geol., v, 71, p. 772-794   DOI   ScienceOn
8 Sillitoe, R.H. (1980) Evidence for porphyry-type mineralization in Southern Korea. Mining Geology Spec. Issue 8, p. 205-214
9 Scott, S.D. and Barnes, H.L. (1971) Sphalerite geothermometry and geobarometry. Econ. Geol., v.66, p.653- 669   DOI
10 Hegelson, H.C. (1969) Thermodynamics of hydrothermal systems at elevated temperatures and pressures. Am. Jour. Sci. v. 26, p.729-804   DOI
11 Yun, S.T., Choi, S.H. and So, C.S. (1996) Complex geochemical evolution of hydrothermal fluids related to polymetallic Cu-Zn-Pb mineralization of the Namseon mine, Gyeongsang Sedimentary Basin, Korea. N.Jb.Miner.Abh., v. 170, p. 127-153
12 Sato, K., Shtmazaki, H. and Chon, H.T. (1981) Sulfur isotopes of the ore deposits related to felsic magmatism in the southern Korean Peninsula. Mining Geology, v.31, p. 321-326
13 Fournier, R.O. and Truesdell, A.H. (1973) Am empirical Na-K-Ca geothermometer for natural waters. Geochim. Cosmochim. Acta, v. 73, p. 1255-1275   DOI   ScienceOn
14 Choi, S.H., So, C.S., Youm, S.J. and Shelton, K.L. (1998) Geochemistry and genesis of hydrothermal Cu deposits in the Gyeongsang Basin, Korea: Masan mineralized area. N.Jb.Miner. Anh., V.173, p. 189-206   ScienceOn
15 Heo, C.H., Yun, S.T., So, C.S., Choi, S.H. and Youm, S.J. (2001) Complex geochemical evolution of hydrothermal fluids related to breccia pipe Cu-W mineralization of the Dalseong mine, Korea. N.Jb.Miner.Abh., v. 176, p. 127-151
16 Choi, S.H., So, C.S., Kweon, S.H. and Choi, K.J. (1994) The geochemistry of copper-bearing hydrothermal vein deposits in Goseong mining district (Samsan area), Gyeongsang basin, Korea. Econ. Environ. Geol. v. 27, p. 147-160
17 Kretshmar, U. and Scott, S.D. (1976) Phase relations involving arsenopyrite in the system Fe-As-S and their application. Canadian Mineralogists, v.14, p.364-386
18 Barton, P.B. Jr. and Toulmin, P.III. (1964) The electrumtarnish method for the determination of the fugacity of sulfur in laboratory sulfides system. Geochim. Cosmochim. Acta, v. 28, p.619-640   DOI   ScienceOn
19 Romberger, S.B. and Barnes, H.L. (1970) Ore solution chemistry III. Solubility of CuS in sulfide solutions. Econ. Geol. v. 65, p. 901-919   DOI