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- <title>UTas ePrints - Fluid Inclusion and Noble Gas Studies of the Dongping Gold Deposit, Hebei Province, China: A Mantle Connection for Mineralization?</title>
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- <meta content="Mao, J." name="eprints.creators_name" />
- <meta content="Li, Y." name="eprints.creators_name" />
- <meta content="Goldfarb, R." name="eprints.creators_name" />
- <meta content="He, Y." name="eprints.creators_name" />
- <meta content="Zaw, K." name="eprints.creators_name" />
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- <meta content="Fluid Inclusion and Noble Gas Studies of the Dongping Gold Deposit, Hebei Province, China: A Mantle Connection for Mineralization?" name="eprints.title" />
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- <meta content="Fluid Inclusions; Gold; Noble Gases; Dongping; Hebei Province; China" name="eprints.keywords" />
- <meta content="The Dongping gold deposit (>100 t Au) occurs about 200 km inboard of the northern margin of the North
- China craton. The deposit is mainly hosted by syenite of a middle Paleozoic alkalic intrusive complex that was
- emplaced into Late Archean basement rocks. Both groups of rocks are intruded by Late Jurassic to Early Cretaceous
- crustal-melt granite dikes and stocks, some within a few kilometers of the deposit. The gold ores were
- deposited during this latter magmatic period at about 150 Ma, a time that was characterized by widespread regional
- north-south compression that formed the east-west–trending Yanshan deformational belt. The ores include
- both the telluride mineral-bearing, low sulfide quartz veins and the highly K-feldspar–altered syenite,
- with most of the resource concentrated in two orebodies (1 and 70).
- Fluid inclusion microthermometry indicates heterogeneous trapping of low-salinity (e.g., 5–7 wt % NaCl
- equiv) fluids that varied from a few to 60 mole percent nonaqueous volatile species. Laser Raman spectroscopy
- confirms that the vapor phase in these inclusions is dominated by CO2 but may be comprised of as much as 9
- mole percent H2S and 20 mole percent N2; methane concentrations in the vapor phase are consistently <1 mole
- percent. The variable phase ratios are consistent with fluid immiscibility during ore formation. Fluid inclusion
- trapping conditions are estimated to be 250° to 375°C and 0.6 to 1.0 kbar. Helium isotope studies of fluid inclusions
- in ore-stage pyrites indicate 3He/4He ratios of 2.1 to 5.2 Ra (Ra = 1.4 × 10–6 for air) for orebody 1 and
- 0.3 to 0.8 Ra for orebody 70. The former data suggest that at least 26 to 65 percent mantle helium occurs in
- the fluids that deposited the veins in orebody 1. The lower values for orebody 70, which is characterized by a
- more disseminated style of gold mineralization, are interpreted to reflect an increased interaction of ore fluids
- with surrounding crustal rocks, which may have contributed additional 4He to the fluids.
- A mantle source for at least some of the components of the gold-forming fluid is consistent with upwelling of
- hot asthenosphere and erosion of as much as 100 to 150 km of cool Archean lithosphere beneath the craton during
- this time. The Dongping deposit is located along the 100-km-wide north-south gravity lineament, which
- marks the western border of the thinned crust. As both regional metamorphism of Mesoproterozoic and younger
- cover rocks, and widespread granite magmatism, also occurred at ca. 150 Ma, it is unclear as to whether one or
- both of these also contributed fluid and/or metals to the hydrothermal system. Importantly, these new data suggest
- that economically significant gold deposits of similar mineral style and fluid composition, which are scattered
- along the margins of the craton, may all be products of a fluid originally partly sourced within the mantle." name="eprints.abstract" />
- <meta content="2003-05" name="eprints.date" />
- <meta content="published" name="eprints.date_type" />
- <meta content="Economic Geology" name="eprints.publication" />
- <meta content="98" name="eprints.volume" />
- <meta content="3" name="eprints.number" />
- <meta content="517-534" name="eprints.pagerange" />
- <meta content="10.2113/98.3.517" name="eprints.id_number" />
- <meta content="TRUE" name="eprints.refereed" />
- <meta content="0361-0128" name="eprints.issn" />
- <meta content="http://dx.doi.org/10.2113/98.3.517" name="eprints.official_url" />
- <meta content="Ahmad, M., Solomon, M., and Walshe, J.L., 1987, Mineralogical and geochemical
- studies of the Emperor gold telluride deposit, Fiji: ECONOMIC
- GEOLOGY, v. 82, p. 345–370.
- Azbel, I.Y., and Tolstkhin, I.N., 1990, Geodynamics, magmatism, and degassing
- of the Earth: Geochimica et Cosmochimica Acta, v. 54, p. 139–154.
- Bohlke, J.K., and Irwin, J.J., 1992, Laser microprobe analyses of noble gas
- isotopes and halogens in fluid inclusions: Analyses of microstandards and
- synthetic inclusions in quartz: Geochimica et Cosmochimica Acta, v. 56, p.
- 187–201.
- Bonham, H.F., 1986, Models for volcanic hosted epithermal precious metal
- deposits: A review: 5th International Volcanological Congress, Volcanism,
- Hydrothermal Systems, and Related Mineralization, Hamilton, New
- Zealand, February 1986, Proceedings, p. 13–17.
- Bowers, T.S., and Helgeson, H.C., 1983, Calculation of the thermodynamic
- and geological consequences of nonideal mixing in the system H2O-CO2-
- NaCl on phrase relations in geological systems: Metamorphic equilibria at
- high pressures and temperatures: American Mineralogist, v. 68, p.
- 1059–1075.
- Bozzo, A.T., Chen, J.R., and Barduhn, A.J., 1973, The properties of hydrates
- of chlorine and carbon dioxide, in Delyannis and Delyannis, eds., International
- Symposium on Fresh Water from the Sea, 4th, v. 3, p. 437–451.
- Burnard, P.G., Hu, R., Turner, G., and Bi, X.W., 1999, Mantle, crustal and atmospheric
- noble gases in Ailaoshan gold deposits, Yunnan province, China:
- Geochimica et Cosmochimica Acta, v. 63, p. 1595–1604.
- Burrows, D.R., and Spooner, E.T.C., 1987, Generation of a magmatic H2OCO2
- fluid enriched in Au, Mo, and W within an Archean sodic granodiorite
- stock, Mink Lake, northwestern Ontario: ECONOMIC GEOLOGY, v. 82, p.
- 1931–1957.
- Burrows, D.R., Wood, P.C., and Spooner, E.T.C., 1986, Carbon isotope evidence
- for a magmatic origin for Archean gold-quartz vein ore deposits: Nature,
- v. 321, p. 851–854.
- Cameron, E.M., 1988, Archean gold: Relation to granulite formation and
- redox zoning in the crust: Geology, v. 16, p. 109–112.
- Cameron, E.M., and Hattori, K., 1987, Archean gold mineralization and oxidized
- hydrothermal fluids: ECONOMIC GEOLOGY, v. 82, p. 1177–1191.
- Cheng, Y., 1994, Regional geology of China: Beijing, Geological Publishing
- House, 575 p. (in Chinese).
- Colvine, A.C., Fyon, J.A., Hedather, K.B., Marmont, S., Smith, P.M., and
- Troop, D.G., 1988, Archean lode gold deposits in Ontario: Ontario Geological
- Survey Miscellaneous Paper 139, 136 p.
- Davis, G.A., Zheng, Y., Wang, C., Darby, B.J., Zhang, C., and Gehrels, G.,
- 2001, Mesozoic tectonic evolution of the Yanshan fold and thrust belt, with
- emphasis on Hebei and Liaoning provinces, northern China: Geological
- Society of America Memoir 194, p. 171–198.
- Deng, J., Mo, X., Zhao, H., Luo, Z., Zhao, G., and Dai, S., 1999, The Yanshanian
- lithosphere-asthenosphere catastrophe and metallogenic environment
- in East China: Mineral Deposits, v. 18, p. 309–315 (in Chinese).
- Eggler, D.H., and Kadik, A.A., 1979, The system NaAlSi3O8-H2O-CO2 to 20
- kbar pressure: I. Compositional and thermodynamic relations of liquids
- and vapors coexisting with albite: American Mineralogist, v. 64, p.
- 1036–1048.
- Giggenbach, W.F., 1986, The use of gas geochemistry in delineating the origin
- of fluid discharges over the Taupo volcanic zone: A review: 5th International
- Volcanological Congress, Volcanism, Hydrothermal Systems, and Related
- Mineralization, Hamilton, New Zealand, February 1986,
- Proceedings, p. 47–50.
- Goldfarb, R.J., Leach, D.L., Pickthorn, W.J., and Paterson, C.J., 1988, Origin
- of lode-gold deposits of the Juneau gold belt, southeastern Alaska: Geology,
- v. 16, p. 467–474.
- Goldfarb, R.J., Phillips, G.N., and Nokleberg, W.J., 1998, Tectonic setting of
- synorogenic gold deposits of the Pacific Rim: Ore Geology Reviews, v. 13,
- p. 185–218.
- Graham, D.W., Johnson, K.T.M., Douglas, P.L., and Lupton, J.E., 1999,
- Hotspot—ridge interaction along the Southeast Indian Ridge near Amsterdam
- and St. Paul islands: Helium isotope evidence: Earth and Planetary
- Science Letters, v. 167, p. 297–310.Griffin, W.L., Zhang, A., O’Reilly, S.Y., and Ryan, C.G., 1998, Phanerozoic
- evolution of the lithosphere beneath the Sino-Korean craton: Geodynamics
- Series, v. 27, p. 107–126
- Groves, D.I., Golding, S.D., Rock, N.M.S., Barley, M.E., and McNaughton,
- N.J., 1988, Archaean carbon reservoirs and their significance to the fluid
- source for gold deposits: Nature, v. 331, p. 254–257.
- Groves, D.I., Goldfarb, R.J., Gebre-Miriam, M., Hagemann, S.G., and
- Robert, F., 1998, Orogenic gold deposits: Proposed classification in the
- context of their crustal distribution and relationship to the other gold deposit
- types: Ore Geology Reviews, v. 13, p. 7–27.
- Hart, C.J.R., Goldfarb, R.J., Qiu, Y., Snee, L.W., Miller, L.D., and Miller,
- M.L., 2002, Gold deposits of the northern margin of the North China craton:
- Multiple late Paleozoic-Mesozoic mineralizing events: Mineralium
- Deposita, v. 37, p. 326–351.
- Higgins, N.C., and Kerrich, R., 1982, Progressive 18O depletion during CO2
- separation from a carbon-dioxide-rich hydrothermal fluid: Evidence from
- the Grey River tungsten deposit, Newfoundland: Canadian Journal of
- Earth Sciences, v. 19, p. 2247–2257.
- Hu, R., Burnard, P.G., Turner, G., and Bi, X.W., 1998, Helium and argon isotope
- systematics in fluid inclusions of Machangqing copper deposit in west
- Yunnan province, China: Chemical Geology, v. 46, p. 55–63.
- Jean-Baptiste, P., and Fouquet, Y., 1996, Abundance and isotopic composition
- of helium in hydrothermal sulfides from the East Pacific Rise at 13°N:
- Geochimica et Cosmochimica Acta, v. 60, p. 87–93.
- Jiang, N., Xu, J., and Song, M., 1999, Fluid inclusion characteristics of
- mesothermal gold deposits in the Xiaoqinling district, Shaanxi and Henan
- provinces, People’s Republic of China: Mineralium Deposita, v. 34, p.
- 150–162.
- Jiang, S., and Nie, F., 2000, 40Ar-39Ar geochronology of the Shuiquangou alkaline
- complex and related gold deposits, northwestern Hebei, China: Geological
- Reviews, v. 46, p. 621–627 (in Chinese).
- Jiang, X., Wang, Y., and Wang, Z., 1996, Petrological and petrochemical characteristics
- of the Shuiquangou-Hougou subalkaline syenite complex in
- northwestern Hebei: Gold Geology, v. 2, p. 56–61 (in Chinese).
- Kendrick, M.A., Burgess, R., Pattrick, R.A.D., and Turner, G., 2001, Fluid
- inclusion noble gas and halogen evidence on the origin of Cu-porphyry
- mineralizing fluids: Geochimica et Cosmochimica Acta, v. 65, p.
- 2651–2668.
- Kerrich, R., 1991, Archean gold: Relation to granulite formation or felsic intrusions?:
- Geology, v. 17, p. 1011–1015.
- Kerrich, R., and Fyfe, W.S., 1981, The gold-carbonate associations: Source of
- CO2 and CO2 fixation reactions in Archean lode deposits: Chemical Geology,
- v. 33, p. 265–294.
- Kyser, T.K., and Kerrich, R., 1990, Geochemistry of fluids in tectonically active
- crustal regions: Mineralogical Association of Canada Short Course 18,
- p. 133–230.
- Li, H., Yan, S., and Wang, J., 1996, Preliminary study on mantle-related metallogenesis—
- an example of the polymetallic area of northwestern Hebei
- province: Mineral Deposits, v. 15, p. 249–256 (in Chinese).
- Liu, B., and Shen, K., 1999, Thermo-dynamics of fluid inclusions: Beijing,
- Geological Publishing House, p. 66–118, and p. 171–233 (in Chinese).
- Lu, D., and Wang, J., 1992, A study on the source of metallogenic material of
- Au deposits based on the isotopic composition of silicon—with a note on
- the Dongping gold deposit: Geology and Prospecting, v. 28, p. 28–31 (in
- Chinese).
- Lu, D., Luo, X., Wang, J., Zhang, S., and Zheng, B., 1993, The metallogenic
- epoch of the Dongping gold deposit: Mineral Deposits, v. 12, p. 182–188
- (in Chinese).
- Lu, S., Yang, C., Jiang, M., Li, H., and Li, H., 1996, Trace of evolution of Precambrian
- continental crust: Beijing, Geological Publishing House, 122 p.
- (in Chinese).
- Mamyrin, B.A., and Tolstikhin, I.N., 1984, Helium isotopes in nature: Amsterdam,
- Elsevier, 273 p.
- Mao, J., and Wang, Z., 2000, Timing of extensive mineralization in eastern
- China and its dynamic background: Mineral Deposits, v. 19, p. 289–296 (in
- Chinese).
- Mao, J., Zhang, Z., Yang, J., and Zhang, Z., 2000, Geology and geochemistry
- of the Hanshan shear zone gold deposit in Gansu province, China: Mineralium
- Deposita, v. 35, p. 63–71.
- Mao, J., Kerrich R., Li, H., and Li, Y., 2002a, High 3He/4He ratios in the
- Wangu gold deposit, Hunan province, China: Implication for mantle mixing
- during metallogenic process along the Tanlu deep fault zone: Geochemical
- Journal, v. 36, p. 197–208.
- Mao, J., Richard, G., Zhang, Z., Xu, W., Qiu, Y., and Deng, Jun., 2002b, Gold
- deposits in the Xiaoqinling-Xiong’ershan region, Central China: Mineralium
- Deposita, v. 37, p. 306–325.
- Miao, L., Qiu, Y., Mcnaughton, N., Luo, Z., Groves, D., Zhai, Y., Fan, W.,
- Zhai, M., and Guan, K., 2002, SHRIMP U-Pb zircon geochronology of
- granitoids from Dongping area, Hebei province, China: Constraints on tectonic
- evolution and geodynamic setting for gold metallogeny: Ore Geology
- Reviews, v. 19, p. 187–204.
- Miller, L., Goldfarb, R.J., Hart, C.J.R., Nie, F.J., Miller, M.L., Yang, Y., and
- Liu, Y., 1998, North China gold—a product of multiple orogens: Society of
- Economic Geologists Newsletter, v. 33, p. 6–12.
- Mo, C., 1997, Origin of the Shuiquangou alkaline complex in northwestern
- Hebei: Bulletin of Mineralogy, Petrology and Geochemistry, v. 16, p. 19–21
- (in Chinese).
- Mo, C., Wang, X., and Cheng, J., 1996, Mechanism of gold mineralizationenrichment
- in main gold deposits in the Zhangjiakou area: Bulletin of Mineralogy,
- Petrology and Geochemistry, v. 15, p. 232–244 (in Chinese).
- Newton, R.C., Smith, J.V., and Windley, B., 1980, Carbonic metamorphism,
- granulite and crustal growth: Nature, v. 288, p. 45–52.
- Nie, F., 1997, Type and distribution of gold deposits along the northern margin
- of the North China craton, People’s Republic of China: International
- Geological Review, v. 39, 151–180.
- ——1998, Geology and origin of the Dongping alkalic-type gold deposit,
- northern Hebei province, People’s Republic of China: Resource Geology,
- v. 48, p. 139–158.
- Niu, S., Li, H., Sun, A., Luo, D., Ye, D., and Wang, J., 1996, Multistage evolution
- and mineralization of mantle plume as exemplified by northern
- Hebei area: Mineral Deposits, v. 15, p. 298–307 (in Chinese).
- Qiu, Y., Groves, D.I., McNaughton, N.J., Wang, L., and Zhou, T., 2002, Nature,
- age, and tectonic setting of granitoid-hosted, orogenic gold deposits of
- the Jiaodong peninsula, eastern North China craton, China: Mineralium
- Deposita, v. 37, p. 283–305.
- Ren, J., Wang, Z., Chen, B., Jiang, C., Niu, B., Li, J., Xie, G., and Liu, Z.,
- 1999, The tectonics of China from a global view: Beijing, Geological Publishing
- House, 32 p. (in Chinese).
- Robert, F., and Kelly, W.C., 1987, Ore-forming fluids in Archean gold-bearing
- quartz veins at the Sigma mine, Abitibi greenstone belt, Quebec,
- Canada: ECONOMIC GEOLOGY, v. 82, p. 1464–1482.
- Roedder, E., 1984, Fluid inclusions: Reviews in Mineralogy, v. 12, p. 25–35.
- Schmidt M.A., Oberthur, T., Vetter, U., and Blenkinsop, T.G., 1997, High CO2
- content fluid inclusions in gold mineralization in the Ashanti belt, Ghana: A
- new category of ore forming fluid?: Mineralium Deposita, v. 32, p. 107–118.
- Schwartz, M.O., 1989, Determining phase volume of mixed CO2-H2O inclusions
- using microthermometric measurements: Mineralium Deposita, v.
- 24, p. 43–47.
- Shepherd , T., Rankin, A.H., and Alderton, D.H.M., 1985, A practical guide
- to fluid inclusion studies: Glasgow, Blackie, 239 p.
- Sillitoe, R.H., 2002, Some metallogenic features of gold and copper deposits
- related to alkaline rocks and consequences for exploration: Mineralium Deposita,
- v. 37, p. 4–13.
- Simmons, S.F., Sawkins, F.J., and Schlutter, D.J., 1987, Mantle-derived helium
- in two Peruvian hydrothermal ore deposits: Nature, v. 329, p. 429–432.
- So, Chil-Sup, Duchenko, V.Y., Yun, Seong-Taek, Park, Maeng-Eon, Choi,
- Seon-Gyu, and Shelton, K.L., 1995, Te- and Se-bearing epithermal Au-Ag
- mineralization, Prasolovskoye, Kunashir island, Kuril island arc: ECONOMIC
- GEOLOGY, v. 90, p. 105–117.
- Song, G., 1991, A gold deposit associated with an alkaline complex—the
- Dongping gold deposit in northern Hebei: Geology and Prospecting, v. 27,
- p. 1–8 (in Chinese).
- Song, R., 1990, Genesis of the Shuiquangou monzonite in the Zhangjiakou
- area and its genetic relation to gold telluride deposits: Beijing, Geological
- Publishing House, 89 p. (in Chinese).
- Song, R., and Zhao, Z., 1996, Geology of the Dongping gold deposit related
- to an alkaline complex in Hebei province: Beijing, Seismological Publishing
- House, 181 p. (in Chinese).
- Spry, P.G., Paredes, M.M., Foster, F., Truckle, J.S., and Chadwick, T.H.,
- 1996, Evidence for a genetic link between gold-silver telluride and porphyry
- molybdenum mineralization at the Golden Sunlight deposit, Whitehall,
- Montana: Fluid inclusion and stable isotope studies: ECONOMIC GEOLOGY,
- v. 91, p. 507–526.
- Stuart, F.M., Turner, G., Duckworth, R.C., and Fallick, A.E., 1994, Helium
- isotopes as tracers of trapped hydrothermal fluids in ocean-floor sulfides:
- Geology, v. 22, p. 823–826.Stuart, F.M., Burnard, P.G., Taylor, R.P., and Turner, G., 1995, Resolving
- mantle and crustal contribution to ancient hydrothermal fluids: He-Ar isotope
- in fluid inclusions from Dae Hwa W-Mo mineralisation, South Korea:
- Geochimica et Cosmochimica Acta, v. 59, p. 4663–4673.
- Thompson, J.H.F. and Newberry, R.J., 2000, Gold deposits related to reduced
- granitic
- intrusions: Reviews in Economic Geology, v. 13, p. 377–400.
- Thompson, T.B., Trippel, A.D., and Dwelley, P.C., 1985, Mineralized veins
- and breccias of the Cripple Creek district, Colorado: ECONOMIC GEOLOGY,
- v. 80, p. 1669–1688.
- Tolstikhin, I.N., 1978, A review: Some recent advances in isotope geochemistry
- of light rare gases, in Alexander, E.C., and Ozima, M., eds. Terrestrial
- rare gases: Tokyo, Japan Scientific Society Press, p. 27–62.
- Tsefaye, G., 1992, Ore-microscopic and geochemical characteristics of goldtelluride-
- sulfide mineralization in the Macassa gold mine, Abitibi belt,
- Canada: Mineralium Deposita, v. 27, p. 66–71.
- Wake, B.A., and Taylor, G.R., 1988, Major’s Creek, N.S.W., Australia—a Devonian
- epithermal gold deposit: Mineralium Deposita, v. 23, p. 239–246.
- Wang, R., 1992, Characteristics and genesis of felsic alkaline rocks in the Jinjiazhuang
- area, Hebei: Journal of Guilin Institute of Technology, v. 12, p.
- 12–20 (in Chinese).
- Wang, Y., Jiang, X., and Shang, M., 1994, Geological characteristics and genesis
- of gold deposits related to subalkaline rocks in northwestern Hebei:
- Geological Review, v. 40, p. 369–376 (in Chinese).
- Wang, Z., and Jiang, X., 1992, The origin and forming-process of the alkalicomplex
- in the Dongping mine of Zhanginjikou-Xuanhua region, Hebei
- province and its geological significance: Journal of Precious Metallic Geology,
- v. 1, p. 18–25 (in Chinese).
- ——1993, Geological characteristics and metallogeny of alkali-complex-related
- gold deposits in Zhangjiakou-Xuanhua region: Geology and Exploration,
- v. 8, p. 31–39 (in Chinese).
- Wei, J., and Su, Qi, 1994, Geochemical characteristics of the Shuiguangou
- complex in the Dongping gold district, Hebei: Scientia Geologica Sinica, v.
- 29, p. 256–266. (in Chinese).
- Xu, J., Xie, Y., Jiang, N., and Bie, F., 1998, Mineralogical, fluid inclusion, and
- stable isotope study of Wenyu-Dongchuang gold deposits in the Xiaoqinling
- Mt. area, West Henan, China: Exploration and Mining Geology, v. 7,
- p. 321–332
- Xu, S., Nakai, S., Wakita, H., and Wang, X., 1995, Mantle-derived noble gases
- in natural gases from Songliao basin, China: Geochimica et Cosmochimica
- Acta, v. 59, p. 4675–4683.
- Xu, Y., Yun, Q., and Li, S., 1994, Metallogenetic study of the Dongping gold
- deposit: Geology and Prospecting, v. 30, p. 28–33 (in Chinese).
- Yakubchuk, A., Cole, A., Seltmann, R., and Shatov, V., 2002, Tectonic setting,
- characteristics, and regional exploration criteria for gold mineralization in
- the Altaid orogenic collage: the Tien Shan province as a key example: Society
- of Economic Geologists, Special Publication 9, p. 177–201.
- Yue, Y., Liou, J.G., and Graham, S.A., 2001, Tectonic correlation of the Beishan
- and Inner Mongolia orogens and its implications for the palinspastic
- reconstruction of north China: Geological Society of America Memoir 194,
- p. 101–116.
- Zhang, W., and Chen, Z., 1993, Geology of fluid inclusions: Wuhan, China
- University of Geosciences Press, p. 83–92 and p. 107–156 (in Chinese).
- Zhang, Z., 1997, Isotope geochemical characteristics of the Shuiquangou
- complex in northern Hebei and its genetic significance: Journal of
- Changchun University of Earth Sciences, v. 27, p. 36–42 (in Chinese).
- Zhang, Z., and Mao, J., 1995, Geology and geochemistry of the Dongping
- gold telluride deposit, Hebei province, North China: International Geology
- Reviews, v. 37, p. 1094–1108.
- Zhao, S., 1996, Geological characteristics of the Dongping gold deposit,
- northern Hebei: Gold Geology, v. 2, p. 22–26 (in Chinese).
- Zhou, T., Goldfarb, R.J., and Phillips, G.N., 2002, Tectonics and distribution
- of gold deposits in China—an overview: Mineralium Deposita, v. 37, p.
- 249–282." name="eprints.referencetext" />
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- <meta content="Mao, J." name="DC.creator" />
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- <meta content="Goldfarb, R." name="DC.creator" />
- <meta content="He, Y." name="DC.creator" />
- <meta content="Zaw, K." name="DC.creator" />
- <meta content="260100 Geology" name="DC.subject" />
- <meta content="The Dongping gold deposit (>100 t Au) occurs about 200 km inboard of the northern margin of the North
- China craton. The deposit is mainly hosted by syenite of a middle Paleozoic alkalic intrusive complex that was
- emplaced into Late Archean basement rocks. Both groups of rocks are intruded by Late Jurassic to Early Cretaceous
- crustal-melt granite dikes and stocks, some within a few kilometers of the deposit. The gold ores were
- deposited during this latter magmatic period at about 150 Ma, a time that was characterized by widespread regional
- north-south compression that formed the east-west–trending Yanshan deformational belt. The ores include
- both the telluride mineral-bearing, low sulfide quartz veins and the highly K-feldspar–altered syenite,
- with most of the resource concentrated in two orebodies (1 and 70).
- Fluid inclusion microthermometry indicates heterogeneous trapping of low-salinity (e.g., 5–7 wt % NaCl
- equiv) fluids that varied from a few to 60 mole percent nonaqueous volatile species. Laser Raman spectroscopy
- confirms that the vapor phase in these inclusions is dominated by CO2 but may be comprised of as much as 9
- mole percent H2S and 20 mole percent N2; methane concentrations in the vapor phase are consistently <1 mole
- percent. The variable phase ratios are consistent with fluid immiscibility during ore formation. Fluid inclusion
- trapping conditions are estimated to be 250° to 375°C and 0.6 to 1.0 kbar. Helium isotope studies of fluid inclusions
- in ore-stage pyrites indicate 3He/4He ratios of 2.1 to 5.2 Ra (Ra = 1.4 × 10–6 for air) for orebody 1 and
- 0.3 to 0.8 Ra for orebody 70. The former data suggest that at least 26 to 65 percent mantle helium occurs in
- the fluids that deposited the veins in orebody 1. The lower values for orebody 70, which is characterized by a
- more disseminated style of gold mineralization, are interpreted to reflect an increased interaction of ore fluids
- with surrounding crustal rocks, which may have contributed additional 4He to the fluids.
- A mantle source for at least some of the components of the gold-forming fluid is consistent with upwelling of
- hot asthenosphere and erosion of as much as 100 to 150 km of cool Archean lithosphere beneath the craton during
- this time. The Dongping deposit is located along the 100-km-wide north-south gravity lineament, which
- marks the western border of the thinned crust. As both regional metamorphism of Mesoproterozoic and younger
- cover rocks, and widespread granite magmatism, also occurred at ca. 150 Ma, it is unclear as to whether one or
- both of these also contributed fluid and/or metals to the hydrothermal system. Importantly, these new data suggest
- that economically significant gold deposits of similar mineral style and fluid composition, which are scattered
- along the margins of the craton, may all be products of a fluid originally partly sourced within the mantle." name="DC.description" />
- <meta content="2003-05" name="DC.date" />
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- <meta content="Mao, J. and Li, Y. and Goldfarb, R. and He, Y. and Zaw, K. (2003) Fluid Inclusion and Noble Gas Studies of the Dongping Gold Deposit, Hebei Province, China: A Mantle Connection for Mineralization? Economic Geology, 98 (3). pp. 517-534. ISSN 0361-0128" name="DC.identifier" />
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- <h1 class="ep_tm_pagetitle">Fluid Inclusion and Noble Gas Studies of the Dongping Gold Deposit, Hebei Province, China: A Mantle Connection for Mineralization?</h1>
- <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Mao, J.</span> and <span class="person_name">Li, Y.</span> and <span class="person_name">Goldfarb, R.</span> and <span class="person_name">He, Y.</span> and <span class="person_name">Zaw, K.</span> (2003) <xhtml:em>Fluid Inclusion and Noble Gas Studies of the Dongping Gold Deposit, Hebei Province, China: A Mantle Connection for Mineralization?</xhtml:em> Economic Geology, 98 (3). pp. 517-534. ISSN 0361-0128</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2066/1/Mao.Li.Goldfarb.etal.ECONGEOL.2003.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2066/1/Mao.Li.Goldfarb.etal.ECONGEOL.2003.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />427Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2605" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.2113/98.3.517">http://dx.doi.org/10.2113/98.3.517</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The Dongping gold deposit (>100 t Au) occurs about 200 km inboard of the northern margin of the North
- China craton. The deposit is mainly hosted by syenite of a middle Paleozoic alkalic intrusive complex that was
- emplaced into Late Archean basement rocks. Both groups of rocks are intruded by Late Jurassic to Early Cretaceous
- crustal-melt granite dikes and stocks, some within a few kilometers of the deposit. The gold ores were
- deposited during this latter magmatic period at about 150 Ma, a time that was characterized by widespread regional
- north-south compression that formed the east-west–trending Yanshan deformational belt. The ores include
- both the telluride mineral-bearing, low sulfide quartz veins and the highly K-feldspar–altered syenite,
- with most of the resource concentrated in two orebodies (1 and 70).
- Fluid inclusion microthermometry indicates heterogeneous trapping of low-salinity (e.g., 5–7 wt % NaCl
- equiv) fluids that varied from a few to 60 mole percent nonaqueous volatile species. Laser Raman spectroscopy
- confirms that the vapor phase in these inclusions is dominated by CO2 but may be comprised of as much as 9
- mole percent H2S and 20 mole percent N2; methane concentrations in the vapor phase are consistently <1 mole
- percent. The variable phase ratios are consistent with fluid immiscibility during ore formation. Fluid inclusion
- trapping conditions are estimated to be 250° to 375°C and 0.6 to 1.0 kbar. Helium isotope studies of fluid inclusions
- in ore-stage pyrites indicate 3He/4He ratios of 2.1 to 5.2 Ra (Ra = 1.4 × 10–6 for air) for orebody 1 and
- 0.3 to 0.8 Ra for orebody 70. The former data suggest that at least 26 to 65 percent mantle helium occurs in
- the fluids that deposited the veins in orebody 1. The lower values for orebody 70, which is characterized by a
- more disseminated style of gold mineralization, are interpreted to reflect an increased interaction of ore fluids
- with surrounding crustal rocks, which may have contributed additional 4He to the fluids.
- A mantle source for at least some of the components of the gold-forming fluid is consistent with upwelling of
- hot asthenosphere and erosion of as much as 100 to 150 km of cool Archean lithosphere beneath the craton during
- this time. The Dongping deposit is located along the 100-km-wide north-south gravity lineament, which
- marks the western border of the thinned crust. As both regional metamorphism of Mesoproterozoic and younger
- cover rocks, and widespread granite magmatism, also occurred at ca. 150 Ma, it is unclear as to whether one or
- both of these also contributed fluid and/or metals to the hydrothermal system. Importantly, these new data suggest
- that economically significant gold deposits of similar mineral style and fluid composition, which are scattered
- along the margins of the craton, may all be products of a fluid originally partly sourced within the mantle.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Fluid Inclusions; Gold; Noble Gases; Dongping; Hebei Province; China</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/260100.html">260000 Earth Sciences > 260100 Geology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2066</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Mrs Katrina Keep</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">09 Oct 2007 21:13</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2066;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2066">item control page</a></p>
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