{"refrec":{"BRefID":353641,"RR":"<b>Zeng, Z.; Liu, X.; Chen, S.; de Jong, J.; Mattielli, N.; Qi, H.; Pearce, C.; Murton, B.J.</b> (2021). Iron, copper, and zinc isotopic fractionation in seafloor basalts and hydrothermal sulfides. <i>Mar. Geol. 436</i>: 106491. <a href=\"https://dx.doi.org/10.1016/j.margeo.2021.106491\" target=\"_blank\">https://dx.doi.org/10.1016/j.margeo.2021.106491</a>","BEntID":351351,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mar. Geol. 436</i>: 106491. <a href=\"https://dx.doi.org/10.1016/j.margeo.2021.106491\" target=\"_blank\">https://dx.doi.org/10.1016/j.margeo.2021.106491</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Zeng, Z.; Liu, X.; Chen, S.; de Jong, J.; Mattielli, N.; Qi, H.; Pearce, C.; Murton, B.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Zeng, Z. <i>et al.</i>","Englishabstract":"Studies of the Fe, Cu, and Zn isotopic compositions of volcanic rocks and sulfides provide an important tool for understanding magmatic, hydrothermal, and alteration processes, thereby enabling the determination of both transition metal sources and the quantification of the petrologic environmental impacts of hydrothermal activities. In this study, the δ<sup>56</sup>Fe and δ<sup>57</sup>Fe values of the mid-ocean ridge basalts (MORBs) are higher than those of the seafloor hydrothermal fluids, while the reverse is true for the δ<sup>66</sup>Zn and δ<sup>68</sup>Zn values, suggesting that basalt-fluid interactions preferentially incorporate isotopically light Fe and heavy Zn into the fluids, resulting in the relative enrichment of heavier Fe and lighter Zn isotopes in altered basaltic rocks. Most of the δ<sup>56</sup>Fe values (−1.96 to +0.11‰) of the sulfide minerals are within the range of the vent fluids, but they are significantly lower than those of the MORBs and back-arc basin basalts (BABBs), suggesting that the Fe in the sulfides was mainly derived from the fluids. However, the majority of the chalcopyrite δ<sup>56</sup>Fe and δ<sup>57</sup>Fe values are higher than those of the sphalerite and pyrite. This suggests that high-temperature sulfide minerals are enriched in <sup>56</sup>Fe and <sup>57</sup>Fe, whereas medium- and low-temperature sulfides are depleted in <sup>56</sup>Fe and <sup>57</sup>Fe. Moreover, the δ<sup>65</sup>Cu (−0.88 to −0.16‰) and δ<sup>66</sup>Zn (−0.39 to −0.03‰) values of the sulfide minerals are significantly lower than those of the MORBs, BABBs, and fluids, suggesting that <sup>63</sup>Cu and <sup>64</sup>Zn were preferentially removed from the fluids and incorporated into the chalcopyrite and sphalerite, respectively. Consequently, vent fluid injection and deposition can cause the heavier Cu and Zn isotopic compositions of hydrothermal plumes, seawater, and sediments.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Iron, copper, and zinc isotopic fractionation in seafloor basalts and hydrothermal sulfides","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-22 01:32:25.778717","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Fe-Cu-Zn isotopic fractionation; Mid-ocean ridge basalts; Seafloor hydrothermal sulfides; Magmatic processes and ore formation","OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2022-07-08","DateCreate":"2022-07-08","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000652406000014","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.margeo.2021.106491"},"refs":null,"anarec":{"AnaID":353641,"PubliDate":2021,"Pagination":"106491","XtraPublOfAnaID":null,"ISBN":null,"Volume":"436","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43365,"SerRR":"Marine Geology. 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