Browse > Article
http://dx.doi.org/10.9719/EEG.2017.50.3.181

Mineralogy, Geochemistry, and Evolution of the Mn-Fe Phosphate Minerals within the Pegmatite in Cheolwon, Gyeonggi Massif  

Kim, Gyoo Bo (Department of Earth and Environmental Sciences, Korea University)
Choi, Seon Gyu (Department of Earth and Environmental Sciences, Korea University)
Seo, Jieun (Department of Earth and Environmental Sciences, Korea University)
Kim, Chang Seong (Department of Earth and Environmental Sciences, Korea University)
Kim, Jiwon (Korea Resources Corporation)
Koo, Minho (Korea Resources Corporation)
Publication Information
Economic and Environmental Geology / v.50, no.3, 2017 , pp. 181-193 More about this Journal
Abstract
Mn-Fe phosphate mineral complexes included within the pegmatite are observed at Jurassic Cheolwon two-mica granite in Gyeonggi Massif, South Korea. The genetic evolution between the Cheolwon two-mica granite and pegmatite, and various trend of Mn-Fe phosphate minerals is made by later magmatic, hydrothermal, and weathering process based on mineralogical, geochemical analysis. The Cheolwon two-mica granite is identified as S-type granite, considering its chemical composition (metaluminous ~ peraluminous), post-collisional environment, low magnetic susceptibility, and existence of biotite and muscovite. The K-Ar age (ca. 153 Ma) of pegmatite is well coincident with age of the Cheolwon two-mica granite ($151{\pm}4Ma$). It indicates that these two rocks are originated from the same magma. Pegmatite indicates the LCT geochemical signature, and was classified as muscovite-rare element class / Li subclass / beryl type / beryl-columbite-phosphate subtype pegmatite. The triplite $\{(Fe^{2+}{_{0.4}},Mn_{1.6})(PO_4)(F_{0.9})\}$ is dominant phosphates in later magmatic stage which partly altered to leucophosphite $\{KFe^{3+}{_2}(PO_4)_2OH{\cdot}2H_2O\}$ and jahnsite $\{(Fe^{3+}{_{0.7}},Mn_{2.3})(PO_4)_2OH{\cdot}4H_2O\}$ by hydrothermal alteration. In particular, near fractures, the triplite has been separatelty replaced by the phosphosiderite ($Fe^{3+}PO_4{\cdot}2H_2O$) and Mn-oxide minerals during weathering stage.
Keywords
Pegmatite; phosphate mineral; triplite; leucophosphite; jahnsite; phosphosiderite;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ballouard C., Poujol M., Boluvais P., Branquet Y., Tartese R. and Vigneresse J.L. (2016) Nb-Ta fractionation in peraluminous granites: A marker of the magmatichydrothermal trasition, Geology, v.44, n.3, p.231-234.   DOI
2 Bohlen S.R., Montana A. and Kerrick D.M. (1991) Precise determination of the equilibria kyanite $\leftrightarrow$ silimanite and kyanite $\leftrightarrow$ andalusite and a revised triple point for $Al_2SiO_5$ polymorphs, American Mineralogist, v.76, p.677-680.
3 Cerny, P. and Ercit, T.S. (2005) The classification of granitic pegmatites revisited. Canadian Mineralogist, v.43, p.2005-2026.   DOI
4 Cerny, P. (1991) Fertile granites of Precambrian rare-element pegmatite fields: is geochemistry controlled by tectonic setting or source lithologies? Precamb. Res., v.51, p.429-468.   DOI
5 Chappell, B.W. and White, A.J.R. (1992) I- and S-type granite in the Lachlan Fold Belt. Transactions of the Royal Society of Edinburgh: Earth Sciences, v.83, p.1-26.   DOI
6 Chappell, B.W. and White, A.J.R. (2001) Two contrasting granite types - 25 years later. Australian Journal of Earth Sciences, v.48, p.489-499.   DOI
7 Cho, D.L. and Kim, Y.J. (2003) SHRIMP U-Pb age dating analysis of leuco-granitic dikes and biotite gneiss at the Pocheon area in the Gyeonggi Massif, Abstract book of 2003 Fall Joint conference of Geological Science of Korea, p.76.
8 Dana, J.D. and Dana, E.S. (1892) The system of mineralogy, 6th edition. Wiley and Sons, New York-London.
9 Correia Neves, L.M. and Lopes Nunes, J.E. (1968) Pegmatitic phosphates of Alto-Ligonha region (Mozambique - Portuguese East Africa). Recista de Ciencia Geologicas, v.1A, p.1-48.
10 Coveney, R.M. and Glascock, M.D. (1989) A review of the origins of metal-rich Pennsylvanian black shales, central U.S.A., with an inferred role for basinal brines: Applied Geochemistry, v.2, p.543-561.
11 Gromet, L.P., Dymek, R.F., Haskin, L.A. and Korotev, R.L. (1984) The 'North American Shale Composite': its compilation, major and trace element characteristics. Geochim. Cosmochim. Acta, v.48, p.2469-2482.   DOI
12 Heinrich, E.W. (1951) Mineralogy of triplite. American Mineralogist, v.36, p.256-271.
13 Hess, F.L. and Hunt, W.F. (1913) Triplite from Eastern Nevada. American Hournal of Sciences, v.36, p.51-54.
14 Kang, M.W., Kim, J.H. and Choi, J.B. (2011) Occurrence of the Nb-Ta Ore Bodies in Pegmatite, Mujoo, Journal of Mineral Society Korea, v.24, no.2, p.133-143.   DOI
15 Park, K.H., Lee, B.J., Cho, D.L. and Kim, J.B. (1997) Geological map of Korea: Hwacheon, Korea Institute of Geoscience and Mineral Resources, p.1-33.
16 Ki, W.S., Cho, D.L., Kim, B.C. and Jin, G.M. (2005) Geological Report of the Pocheon Sheet, Korea Institute of Geoscience and Mineral Resources. p.1-66.
17 Kim, C.S., Go, J.S. Choi, S.G. and Kim, S.T. (2014) Geology, Mineralization, and Age of the Pocheon Fe(-Cu) Skarn Deposit, Korea, Economic and Environment Geology, v.47, p.317-333.
18 Lee, S.R., Cho, M., Yi, K. and Stern R.A. (2000) Early Proterozoic Granulites in Central Korea: Tectonic Correlation with Chinese Cratons. Journal of Geology, v.108, p.729-738.   DOI
19 Mackay, D.A.R. and Simandl, G.J. (2015) Pyrochlore and columbite-tantalite as indicator minerals for specialty metal deposit, Geochemistry: Exploration, Environment, Analysis (GEEA), v.15, p.167-178.   DOI
20 Park, H.I., Chang H.W. and Jin M.S. (1988) K-Ar Ages of Mineral Deposits in the Gyeonggi Massif, Jour. Korean Inst. Mining Geol., v.21, n.4, p.349-358.
21 Rea, J.R. and Kostiner, E. (1972) The Crystal Structure of Manganese Fluorophosphate, $Mn_2(PO_4)F$, Acta Cryst., v.B28, p.2525-2529.
22 Roda-rovles, E., Pesquera, A., Madinabeitia, S.G.D., Ibarguchi J.G., Nizamoff, J., Simmons, W., Falster, A. and Galliski, M. (2014) On the Geochemical Chacter of Primary Fe-Mn Phosphates Belonging to the Triphylite - Lithiophilite, Graftonite - Beusite, and Triplite - Zwieselite Series: First Results and Implications for Pegmatite Petrogenesis, The Canadian Mineralogist, v.52, p.321-335.   DOI
23 Shannon, E.V. (1920) Notes on anglesite, anthophyllite, calcite, datolite, sillimanite, stilpnomelane, tetrahedrite and triplite. Proceedings of the United States National Museum, v.58, p.437-453.   DOI
24 Wolf, M.B., London, D. and Morgan, G.B. (1994) Effect of boron on the solubility of cassiterite and tantalite in granitic liquids, Geol. Soc. Am . Abster. Progr., v.26, p.A-450.
25 Song, K.Y. and Cho, D.L. (2007) Geological Report of the Gimhwa Sheet, Korea Institute of Geoscience and Mineral Resources, p.1-66.
26 Taxer, K. and Bartl, H. (2004) On the dimorphy between the variscite and clinovariscite group: refined, finestructural relationship of strengite and clinostrengite, $Fe(PO_4){\cdot}_2H_2O$, Crystal Research and Technology, v.39, p.1080-1088.   DOI
27 Vignola, P., Hatert, F., Cuastoni, A. and Bersani, D. (2014) On the Crysral-Chemistry of a near-endmember Triplite, $Mn^{2+}_2(PO_4)F$, from the Codera Valley (Sondrio Province, Central Alps, Italy), The Canadian Mineralogist, v.52, p.235-245.   DOI
28 Wallace, R.E. (1940) Crystal chemistry of the phosphates, arsenates and vanadates of the type $A_2XO_4(Z)$. American Mineralogist, v.25, p.441-479.