Abstract
The composition of minerals from stratiform ores of the Lengshuikeng deposit, China was studied using contemporary techniques. Barite, enargite, and kutnohorite typical of postvolcanic mineralization have been identified for the first time at the studied deposit. The fluid inclusion study shows that the stratiform ore was formed at a temperature of 340–140°C from homogeneous chloride solution with salinity of 0.2–11.7 wt % NaCl equiv. The O and C isotopic compositions of carbonates from the stratiform ore allowed us to calculate the oxygen isotopic composition of the H2O and the carbon isotopic composition of the CO2 in the ore-forming fluid. The data on ore minerals, fluid inclusions in quartz, and stable O and C isotopes show that two or more fluids derived from different sources could have mixed during formation of the stratiform ores.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Betekhtin, A.G., Hydrothermal Solutions, Their Origin and Ore Formation, in Osnovnye problemy v uchenii o magmatogennykh rudnykh mestorozhdeniyakh (Main Problems in the Science on Magmatic Ore Deposits), Moscow: USSR Academy of Sciences, 1955, pp. 125–278.
Bodnar, R.J. and Vityk, M.O., Interpretation of Microthermometric Data for H2O-NaCl Fluid Inclusions, in Fluid Inclusions in Minerals: Methods and Applications, Pontignano: Siena, 1994, p. 117–130.
Borisenko, A.S., Study of Salt Composition of Fluid Inclusions in Mineral with Cryometric Method, Geol. Geofiz., 1977, vol. 18, no. 8, p. 16–27.
Bortnikov, N.S., Geochemistry and Origin of the Ore-Forming Fluids in Hydrothermal-Magmatic Systems in Tectonically Active Zones, Geol. Ore Deposits, 2006, vol. 48, no. 1, p. 1–22.
Bottinga, Y., Calculated Fractionation Factors for Carbon and Hydrogen Isotope Exchange in the System Calcite-Carbon Dioxide-Graphite-Methane-Hydrogen-Water Vapor, Geochim. Cosmochim. Acta, 1969, vol. 33, pp. 49–64.
Brown, P., FLINCOR: A Computer Program for the Reduction and Investigation of Fluid Inclusion Data, Am. Mineral., 1989, vol. 74, pp. 1390–1393.
Chen, F.R. and Qiu, Y.Z., Fluid Geochemical Modeling of Ore-Forming Process of Lengshuikeng Ag, Pb, Zn Porphyry Deposit, Jiangxi, China and Its Geological Implications, Geochimica, 1995, vol. 24, no. 1, pp. 24–32.
Chen, W. and Zhou, J.P., Mineralization of the Lengshuikeng Porphyry Ag-Pb-Zn Deposit in Jiangxi Province, J. Mineral. Petrol., 1988, vol. 8, no. 2, pp. 84–91.
Deng, S.M., Cryptoexplosive Breccia Dyke in the Paleovolcanic Rock Zone in Lengshuikeng, Guixi, Jiangxi Province and Its Metallogeny, Geol. Sci. Techn. Jiangxi, 1991, vol. 18, no. 1, pp. 28–32.
Dong, S.F., The Characteristics of Lengshuikeng Auriferous Porphyry and Its Gold Mineralization in Jiangxi, Geol. Jiangxi, 1994, vol. 8, no. 1, pp. 14–20.
Faure, G., Principles of Isotope Geology, New York: Wiley, 1986; Moscow: Mir, 1989.
Generalov, M.E., Endogenic Carbonates As Indicators of Gold Deposit Types, Izv. Akad. Nauk, Ser. Geol., 1990, no. 8, pp. 98–104.
Huang, Z.Q., Discovery and Evaluation of Lengshuikeng Silver Ore Field, Geol. Jiangxi, 1992a, vol. 6, no. 4, pp. 309–314.
Huang, Z.Q., Metallogeny of the Carbonate Ag Deposit in Lengshuikeng, Geol. Jiangxi, 1992b, vol. 6, no. 1, pp. 1–8.
Huang, Z.Q., The Mineralization Conditons and Deposit Characteristics of Lengshuikeng Silver Orefield in Jiangxi, China, J. Precious Metal. Geology, 1993, vol. 2, no. 4, pp. 284–291.
Kolchedannye mestorozhdeniya mira (Massive Sulfide Deposits of the World), Moscow: Nedra, 1984.
Laznicka, P., Giant Metallic Deposits, Berlin: Springer, 2010.
Liu, X. and Shen, S.L., Some Problems of Tectono-Geochemistry in Lengshuikeng Ag-Pb-Zn Ore Field, Jiangxi Province, China, Geotectonica et Metallogenia, 1991, vol. 15, no. 1, pp. 41–54.
Pirajno, F., Hydrothermal Processes and Mineral Systems, Perth: Springer, 2010.
Sheppard, S.M.F. and Schwartz, H.P., Fractionation of Carbon and Oxygen Isotopes and Magnesium Between Coexisting Metamorphic Calcite and Dolomite, Contrib. Mineral. Petrol., 1970, vol. 26, pp. 161–198.
Sheppard, S.M.F., Characterization and Isotopic Variations in Natural Waters, Rev. Mineral., 1986, vol. 16, pp. 165–183.
Wang, A.C., Occurrence and Concentration Regularity of Silver in Lengshuikeng Porphyritic Ag-Pb-Zn Deposit, Geol. Jiangxi, 1991, vol. 5, no. 3, pp. 227–237.
Wei, M.X., Relationship between Altered Carbonate Minerals and Silver Mineralization in the Lengshuikeng Porphyry Silver Deposit, Jiangxi, Mineral Res. Geol., 1997, vol. 11, no. 57, pp. 39–45.
Xiangjin, M., Zengqian, H., Guangyu, D., et al., Geological Characteristics and Mineralization Timing of the Lengshuikeng Porphyry Pb-Zn-Ag Deposit, Jiangxi Province, Acta Geol. Sin., 2009, vol. 83, no. 12, pp. 1951–1967.
Xu, W.X., Xiao, M.H., and Chen, M.Y., A Study of the Isotope Geochemistry of the Lengshuikeng Ag-Pb-Zn Ore Deposit, Jiangxi Province, Bull. Mineral. Petrol. Geochem., 2001, vol. 20, no. 4, pp. 370–372.
Yan, X.X., Zhao, Z.G., and He, X.R., On Ag Element Enrichment in Lengshuikeng Ag Mine, Guixi, Res. Survey and Environment, 2007, vol. 28, no. 1, pp. 46–53.
Zheng, Y.-F., Oxygen Isotope Fractionation in Carbonate and Sulfate Minerals, Geochem. J., 1999, vol. 33, pp. 109–126.
Zuo, L.Y., Meng, X.J., and Yang, Z.S., Petrochemistry and Sr, Nd Isotopes of Intrusive in Lengshuikeng Porphyry Type Ag-Pb-Zn Deposit, Miner. Deposita, 2008, vol. 27, no. 3, pp. 367–382.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © Y. Lei, V.I. Starostin, V.Yu. Prokof’ev, U. Gango, 2012, published in Geologiya Rudnykh Mestorozhdenii, 2012, Vol. 54, No. 3, pp. 265–279.
Rights and permissions
About this article
Cite this article
Lei, Y., Starostin, V.I., Prokof’ev, V.Y. et al. Stratiform ore of the large Lengshuikeng silver deposit, China: Mineralogy, fluid inclusions, stable O and C isotopes. Geol. Ore Deposits 54, 219–232 (2012). https://doi.org/10.1134/S1075701512030075
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1075701512030075