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Lein, Alla Yu; Ul'yanova, Nina V; Ul'yanov, Alexander A; Cherkashov, Georgy A; Stepanova, Tamara V (2001): Chemical and isotopic compositions of rocks, ores, and hydrothermal minerals from the Rainbow and Logachev-2 hydrothermal fields [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.745044, Supplement to: Lein, AY et al. (2001): Mineralogy and geochemistry of sulfide ores in ocean-floor hydrothermal fields associated with serpentinite protrusions. Russian Journal of Earth Sciences, 3(5), 371-393

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Abstract:
The aim of this paper is to analyze and compare mineralogy and geochemistry of copper-zinc sulfide ores from the Logachev-2 and Rainbow hydrothermal fields of the Mid-Atlantic Ridge (MAR) confined to serpentinite protrusions. It was found that Zn(Fe) and Cu, Fe(Zn) sulfides had been deposited in black smokers pipes almost simultaneously from intermittently flowing, nonequilibrium H2S-low solutions of different temperatures. Pb isotope composition confirmed that the deep oceanic crust had been a source of lead. The ores from the Rainbow field are 20-fold higher in Co than ores restricted to basalts and show a high ratio of Co/Ni=46. The ores from the Rainbow field are enriched in 34S isotope (aver. d34S=10 per mil) because of constant flow of cold sea water into the subsurface zone of the hydrothermal system. Ores from the Logachev-2 field are 8 times higher in gold compared to other MAR regions. Sulfide ores from the Rainbow and Logachev-2 fields have no analogues among MAR ore occurrences in terms of enrichment in valuable components (Zn, Cd, Co, and Au).
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 26.679600 * Median Longitude: -38.803034 * South-bound Latitude: 14.720000 * West-bound Longitude: -44.940000 * North-bound Latitude: 36.230310 * East-bound Longitude: -33.901150
Event(s):
AMK41-3840-2 * Latitude: 36.229850 * Longitude: -33.902660 * Location: Rainbow Hydrothermal Field * Campaign: AMK41 * Basis: Akademik Mstislav Keldysh * Method/Device: MIR deep-sea manned submersible (MIR)
AMK41-3840-3 * Latitude: 36.229850 * Longitude: -33.902660 * Location: Rainbow Hydrothermal Field * Campaign: AMK41 * Basis: Akademik Mstislav Keldysh * Method/Device: MIR deep-sea manned submersible (MIR)
AMK41-3840-4 * Latitude: 36.229850 * Longitude: -33.902660 * Location: Rainbow Hydrothermal Field * Campaign: AMK41 * Basis: Akademik Mstislav Keldysh * Method/Device: MIR deep-sea manned submersible (MIR)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
10 datasets

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Datasets listed in this publication series

  1. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 1) Results of radiochemical analyses of sulfide ore samples collected from the Rainbow and Logachev-2 hydrothermal fields. https://doi.org/10.1594/PANGAEA.744986
  2. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 3) Compositions of sphalerite from the Logachev-2 hydrothermal field. https://doi.org/10.1594/PANGAEA.745010
  3. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 4) Analyses of individual phases of gold-silver solid solutions (+ Zn, Cu) in sulfide ores from the Logachev-2 hydrothermal field. https://doi.org/10.1594/PANGAEA.745011
  4. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 5) Composition of galena from the Logachev-2 hydrothermal field. https://doi.org/10.1594/PANGAEA.745031
  5. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 6) Compositions of fahlore and unnamed mineral from the Logachev-2 hydrothermal field. https://doi.org/10.1594/PANGAEA.745032
  6. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 7) Analyses of sphalerites and Cu,Fe-sulfides from sulfide ores of the Rainbow hydrothermal field. https://doi.org/10.1594/PANGAEA.745033
  7. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 8) Compositions of pyrites and pyrrhotite from sulfide ores of the Rainbow hydrothermal field. https://doi.org/10.1594/PANGAEA.745040
  8. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 9) Analyses of native accessory minerals from the Rainbow hydrothermal field. https://doi.org/10.1594/PANGAEA.745041
  9. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 11) Isotopic composition of sulfide sulfur from the Rainbow hydrothermal field. https://doi.org/10.1594/PANGAEA.745042
  10. Lein, AY; Ul'yanova, NV; Ul'yanov, AA et al. (2001): (Table 15) Isotopic composition of lead from serpentinite and Cu-sphalerite ore of the Rainbow hydrothermal field. https://doi.org/10.1594/PANGAEA.745043