Publication Date:
2024-02-02
Description:
Experimental studies have shown that temperature, pressure, sulfur fugacity ( fS2), and oxygen fugacity ( fO2) influence the Fe content of sphalerite. We present compositional in situ data on sphalerite from submarine volcanic-hosted massive sulfide (VHMS) ores of hydrothermal vents from different plate tectonic settings and with variable host-rock compositions. Sphalerite from sediment-hosted vents has systematically higher S contents and Fe/Zn ratios than those of the sediment-starved vents, reflecting an influence of fS2 and fO2 on Fe partitioning between fluid and sphalerite. The Fe/Zn ratios of sphalerite from sediment-starved vent systems apparently increase systematically with the fluid temperatures of the corresponding vents. We conclude that the composition of sphalerite can be used to (1) distinguish between sediment-hosted and sediment-starved hydrothermal processes, and (2) estimate minimum fluid temperatures of sphalerite precipitation from inactive sediment-starved hydrothermal vent sites and fossil VHMS deposits.
Keywords:
102GTVA; 105-4-S4; 106-3-S1b; 114GTVA; ALV2189-5-1; ALVIN; Area/locality; AS9895f; BAMBUS; Bismarck Sea; Copper; East China Sea; Electron microprobe JEOL JXA-8200; Event label; Grab_BGR Video A; GTVA; Indian Ocean; Iron; Latitude of event; Longitude of event; M64/1; M64/1-139-GTV; M68/1; M68/1-20-ROV; MANGO; MARSUED2; MARSUED3; Meteor (1986); Mid-Atlantic Ridge at 4-11°S; Remote operated vehicle; ROV; Sample ID; SO192/2; SO192/2_049; SO216; SO216-53-1; Sonne; South Atlantic Ocean; South Pacific Ocean; Station label; Submersible Alvin; Sulfur; Television-Grab; TVG; Zinc
Type:
Dataset
Format:
text/tab-separated-values, 1400 data points
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