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Ba-rich micas from the Yindongzi-Daxigou Pb-Zn-Ag and Fe deposits, Qinling, northwestern China

Published online by Cambridge University Press:  05 July 2018

Shao-Yong Jiang ,
M. R. Palmer ,
Yan-He Li  and
Chun-Ji Xue
Shao-Yong Jiang
Affiliation:
Department of Geology, University of Bristol, Bristol, BS8 1RJ, UK
M. R. Palmer
Affiliation:
Department of Geology, University of Bristol, Bristol, BS8 1RJ, UK
Yan-He Li
Affiliation:
Institute of Mineral Deposits, Beijing, 100037, China
Chun-Ji Xue
Affiliation:
Xi'an College of Geology, Xi'an, 710054, China
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Abstract

Electron-microprobe analyses of muscovite, biotite, and feldspar are reported for the stratiform Yindongzi—Daxigou Pb—Zn—Ag and Fe deposits of Qinling, northwestern China. The micas are characterized by high Ba levels in banded albite-carbonate rocks that host the deposits. The biotite is also rich in Cl, as is biotite in the nearby Tongmugou Pb-Zn deposit, although biotite and muscovite from this deposit lack Ba enrichment. It is likely that the Ba-rich micas in the Yindongzi-Daxigou deposits formed contemporaneously from the diagenesis and/or regional metamorphism of hydrothermally altered clay minerals, with the barium being derived from entrained pore fluids that may represent relict hydrothermal fluids associated with ore deposition. During the formation of coexisting muscovite and biotite, barium is preferentially partitioned into muscovite and chloride into biotite. Together with the presence of baryte rocks in the bedded ores, these data suggest that ore deposition in the Yindongzi—Daxigou deposits took place in a more oxidising environment than in the nearby Tongmugou deposit. This difference is attributed to the contrasting sedimentary environments of the two deposits, with the Yindongzi—Daxigou deposits having formed under shallow, oxic conditions and the Tongmugou deposit under deeper, anoxic conditions.

Keywords

barian muscovitebarian chlorian biotitebanded chemical rocksPb—Zn—Ag depositsFe depositChina
Type
Mineralogy
Information
Mineralogical Magazine , Volume 60 , Issue 400 , June 1996 , pp. 433 - 445
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1996

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References

Barbey, P. and Cuney, M. (1982) K, Rb, Sr, Ba, U, and Th geochemistry of the Lapland granulites (Fennoscandia). LILE fractionation controlling factors. Contrib. Mineral. Petrol., 81, 304–16.CrossRefGoogle Scholar
Bjorlykke, K.O. and Griffin, W.L. (1973) Barium feldspar in Ordovician sediments, Oslo region, Norway. J. Sed. Petrol., 43, 461–5.Google Scholar
Bol, L.C.G.M., Bos, A., Sauter, P.C.C. and Jansen, J.B.H. (1989) Barium-titanium-rich phlogopites in marbles from Rogaland, southwest Norway. Amer. Mineral., 74, 439–47.Google Scholar
Bostrom, K., Rydell, H. and Joensuu, O. (1979) Langban —an exhalative sedimentary deposit? Econ. GeoL, 74, 1002–11.CrossRefGoogle Scholar
Chabu, M. and Boulegue, J. (1992) Barian feldspar and muscovite from the Kipushi Zn-Pb-Cu deposit, Shaba, Zaire. Canad. Mineral, 30, 1143–52.Google Scholar
Coats, J.S., Smith, C.G., Fortey, N.J., Gallagher, M.J., May, F. and McCourt, W.J. (1980) Stratabound barium-zinc mineralization in Dalradian schist near Aberfeldy, Scotland. Trans. Inst. Mining Metall. (Sect. B: Appl. Earth Sci.), 89, B110—B122.Google Scholar
Coats, J.S., Fortey, N.J., Gallagher, M.J. and Grout, A. (1984) Stratiform barium enrichment in the Dalradian of Scotland. Econ. GeoL, 79, 1585–95.CrossRefGoogle Scholar
Deer, W.A., Howie, R.A. and Zussman, J. (1966) An Introduction to the Rock Forming Minerals. Longman, London. 528pp.Google Scholar
Dunn, P.J. (1984) Barian muscovite from Franklin, New Jersey. Mineral. Mag., 48, 562–3.CrossRefGoogle Scholar
Dymek, R.F., Boak, J.L. and Kerr, M.T. (1983) Green micas in the Archean Isua and Malene supracrustal rocks, southern West Greenland, and the occurrence of a barian-chromian muscovite. Rapp. Gronlands Geol. Unders., 112, 71–82.Google Scholar
Fortey, N.J. and Beddoe-Stephens, B. (1982) Barium silicates in stratabound Ba-Zn mineralization in the Scottish Dalradian. Mineral. Mag., 46, 63–72.CrossRefGoogle Scholar
Fortey, NJ., Coats, J.S., Gallagher, M.J., Smith, C.G. and Greenwood, P.G. (1993) New stratabound barite and base metals in Middle Dalradian rocks near Braemar, northeast Scotland. Trans. Inst. Mining Metall. (Sect. B: Appl. Earth Sci.), 102, B55—B64.Google Scholar
Frondel, C. and Ito, J. (1968) Barium-rich phlogopite from Langban, Sweden. Arkiv Mineralogie Geologie, 4, 445–7.Google Scholar
Frondel, C., Ito, J. and Hendricks, J.G. (1966) Barium feldspars from Franklin, New Jersey. Amer. Mineral, 51, 1388–93.Google Scholar
Garrels, R.M. and Christ, C. L.(1965) So/MncmA Minerals and Equilibria. Harper, New York. 450pp.Google Scholar
Gaspar, J.C. and Wyllie, P.J. (1982) Barium phlogopite from the Jacupiranga carbonatite, Brazil. Amer. Mineral., 67, 997–1000.Google Scholar
Guggenheim, S. (1984) The brittle micas. In Reviews in Mineralogy: Micas (Bailey, S.W., ed.). Mineralogical Society of America, 61—104.Google Scholar
Guidotti, C.V. (1984) Micas in metamorphic rocks. In Reviews in Mineralogy: Micas (Bailey, S.W., ed.). Mineralogical Society of America, 357—467.Google Scholar
Heinrich, E.W. and Levinson, A.A. (1955) Studies in the mica group; X-ray data on roscoelite and barium- muscovite. Amer. J. Sci., 253, 39–43.CrossRefGoogle Scholar
Holland, H.D. and Malinin, S.D. (1979) The solubility and occurrence of non-ore minerals. In Geochemistry of Hydrothermal Ore Deposits(2nd edition) (H.L. Barnes, ed.). John Wiley and Sons, Inc., 461—501.Google Scholar
Jakobsen, U.H. (1990) A hydrated barium silicate in unmetamorphosed sedimentary rocks of central North Greenland. Mineral. Mag., 54, 81–9.CrossRefGoogle Scholar
Jiang, S.-Y., Palmer, M.R., Xue, C.J. and Li, Y.H. (1994) Halogen-rich scapolite-biotite rocks from the Tongmugou Pb-Zn deposit, Qinling, northwestern China: Implications for the ore-forming processes. Mineral. Mag., 58, 543–52.CrossRefGoogle Scholar
Jiang, S.-Y., Palmer, M.R., Li, Y.-H. and Xue, C.-J. (1995) Chemical compositions of tourmaline in the Yidongzi-Tongmugou Pb-Zn deposits, Qinling, China: Implications for the hydrothermal ore- forming processes. Mineral. Deposita, 30, 225–34.CrossRefGoogle Scholar
Large, D.E. (1980) Geological parameters associated with sediment-hosted submarine exhalative Pb-Zn deposits: An empirical model for mineral exploration. Geol. Jahrb., 40, 59–129.Google Scholar
Mansker, W.L., Ewing, R.C. and Keil, K. (1979) Barian- titanian biotites in nephelinites from Oahu, Hawaii. Amer. Mineral., 64, 156–9.Google Scholar
Munoz, J.L. and Swenson, A. (1981) Chloride-hydroxyl exchange in biotite and estimation of relative HC1/ HF activities in hydrothermal fluids. Econ. Geol, 76, 2212–21.CrossRefGoogle Scholar
Pan, Y. and Fleet, M.E. (1991) Barian feldspar and barian-chromian muscovite from the Hemlo area, Ontario. Canad. Mineral, 29, 481–98.Google Scholar
Raase, P., Raith, M., Ackermand, D., Viswanathan, M.N. and Lai, R.K. (1983) Mineralogy of chromi- tiferous quartzites from south India. J. Geol. Soc. India., 24, 502–21.Google Scholar
Runnells, D.D. (1964) Cymrite in a copper deposit, Brooks Range, Alaska. Amer. Mineral, 49, 158–65.Google Scholar
Russell, M.J., Hall, A.J., Willan, R.C.R., Allison, I., Anderton, R. and Bowes, G. (1984) On the origin of the Aberfeldy celsian+baryte+base-metal deposits, Scotland. Symposium on prospecting in areas of glaciated terrain, Glasgow, Scotland. 158—70.Google Scholar
Tracy, R.J. (1991) Ba-rich micas from the Franklin Marble, Lime Crest and Sterling Hill, New Jersey. Amer. Mineral., 76, 1683–93.Google Scholar
Treloar, P.J. (1987) Chromian muscovites and epidotes from Outokumpu, Finland. Mineral. Mag., 51, 593–9.CrossRefGoogle Scholar
Valley, J.W., Peterson, E.U., Essene, E.J. and Bowman, J.R. (1982) Fluorphlogopite and fluortremolite in Adirondack marbles and calculated C-O-H-F fluid composition. Amer. Mineral, 67, 545–57.Google Scholar
Wendlandt, R.F. (1977) Barium-phlogopite from Haystack Butte, Highwood Mountains, Montana. In Carnegie Inst, of Washington Year Book 1977, 534-9.Google Scholar
Xue, C. (1991) A study on the seafloor hydrothermal sedimentary nature of jasperoid rocks in Yindongzi. Mineral. Petrol., 11, 31–40.(in Chinese).Google Scholar
Yoshii, M., Maeda, K., Kato, T., Watanabe, T., Yui, S., Kato, A. and Nagashima, K. (1973) Kinoshitalite, a new mineral from the Noda-Tamagawa mine, Iwate Prefecture. Chigaku Kenkyu, 24, 181–90.Google Scholar
Zhang, B.Y., Chen, D.X., Li, Z.J. and Gu, X.M. (1989) The regional geochemistry of the Zhashui-Shanyang sulfide mineralization zone, Shaixi, China. Chinese Geol. Univ. Pub. House, Beijing, 249 pp. (in Chinese).Google Scholar
Zhang, F. (1991) Exhalites associated with Pb-Zn mineralization in Devonian system and their prospecting implications, Qinling, China J. Geochem., 10, 348–56.Google Scholar
Zhang, Q.S. (1980) Metamorphic geology Qinling. People's Pub. House, Jilin. 215 Chinese).Google Scholar