Isotopic fingerprinting of remobilized and superimposed mineralization in orogenic terrains: Rävliden North VMS deposit, Skellefte District, Sweden

IF 5 2区地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS

Mineralium Deposita Pub Date : 2026-10-15 DOI:10.1007/s00126-026-01488-7

Jonathan Rincon,Nils F. Jansson,Helen Thomas,Majka Christiane Kaiser,Mac Fjellerad Persson,Henrik Drake,Martin J. Whitehouse,Heejin Jeon,Ilia Rodushkin,Emma Engström,Leslie Logan,Christina Wanhainen

{"title":"Isotopic fingerprinting of remobilized and superimposed mineralization in orogenic terrains: Rävliden North VMS deposit, Skellefte District, Sweden","authors":"Jonathan Rincon,Nils F. Jansson,Helen Thomas,Majka Christiane Kaiser,Mac Fjellerad Persson,Henrik Drake,Martin J. Whitehouse,Heejin Jeon,Ilia Rodushkin,Emma Engström,Leslie Logan,Christina Wanhainen","doi":"10.1007/s00126-026-01488-7","DOIUrl":null,"url":null,"abstract":"Abstract Stable and radiogenic isotopes trace fluid and metal sources in volcanogenic massive sulfide (VMS) deposits and discriminate between superimposed mineral systems in ancient terrains. Despite their application in many VMS districts, isotopic studies remain limited for the Skellefte district. This study presents the first in-situ sulfur isotope (δ 34 S) data for pyrite, pyrrhotite, sphalerite, and chalcopyrite from the metamorphosed Rävliden North Zn-Pb-Cu-Ag VMS deposit. The δ 34 S (Vienna Canyon Diablo Troilite, V-CDT) values ranging from -2.67 to 3.68 ‰ indicate a primordial sulfur source for the c. 1.88 Ga mineralization, derived from hydrothermal fluids leaching volcano-sedimentary rocks. In contrast, sulfide minerals in the stratigraphic hanging wall record heavier δ 34 S values (up to 5.3 ‰ in sphalerite) reflecting syn-diagenetic incorporation of Paleoproterozoic seawater sulfur under anoxic conditions. Pyrite from overprinting Svecokarelian quartz veins and sulfide-cemented breccia demonstrates progressive 34 S isotope enrichment during syn-metamorphic growth, from near-zero hydrothermal δ 34 S in grain cores to ~ 5 ‰ in grain margins. Post-Svecokarelian Zn-Pb minerals hosted in calcite- and zeolite-bearing veins and breccias display stable isotope ratios (δ 13 C, δ 18 O, δ 114 Cd, δ 66 Zn, δ 56 Fe) consistent with a meteoric or connate fluid source and precipitation under reducing conditions at approximately 150°C. Lead isotopes show a typical Skellefte VMS signature for Rävliden North, whereas the post-Svecokarelian mineralization exhibits a more radiogenic composition, similar to ~ 0.5 Ga Pb–Zn veins of the Lycksele–Storuman area, constituting a superimposed mineral system, which formed due to far-field effects of the Timanian orogeny or the opening of the Iapetus Ocean. Our results demonstrate that distinguishing between remobilized and superimposed mineral systems in orogenic terrains requires integration of detailed paragenesis with isotope analyses.","PeriodicalId":18682,"journal":{"name":"Mineralium Deposita","volume":"27 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mineralium Deposita","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1007/s00126-026-01488-7","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract Stable and radiogenic isotopes trace fluid and metal sources in volcanogenic massive sulfide (VMS) deposits and discriminate between superimposed mineral systems in ancient terrains. Despite their application in many VMS districts, isotopic studies remain limited for the Skellefte district. This study presents the first in-situ sulfur isotope (δ 34 S) data for pyrite, pyrrhotite, sphalerite, and chalcopyrite from the metamorphosed Rävliden North Zn-Pb-Cu-Ag VMS deposit. The δ 34 S (Vienna Canyon Diablo Troilite, V-CDT) values ranging from -2.67 to 3.68 ‰ indicate a primordial sulfur source for the c. 1.88 Ga mineralization, derived from hydrothermal fluids leaching volcano-sedimentary rocks. In contrast, sulfide minerals in the stratigraphic hanging wall record heavier δ 34 S values (up to 5.3 ‰ in sphalerite) reflecting syn-diagenetic incorporation of Paleoproterozoic seawater sulfur under anoxic conditions. Pyrite from overprinting Svecokarelian quartz veins and sulfide-cemented breccia demonstrates progressive 34 S isotope enrichment during syn-metamorphic growth, from near-zero hydrothermal δ 34 S in grain cores to ~ 5 ‰ in grain margins. Post-Svecokarelian Zn-Pb minerals hosted in calcite- and zeolite-bearing veins and breccias display stable isotope ratios (δ 13 C, δ 18 O, δ 114 Cd, δ 66 Zn, δ 56 Fe) consistent with a meteoric or connate fluid source and precipitation under reducing conditions at approximately 150°C. Lead isotopes show a typical Skellefte VMS signature for Rävliden North, whereas the post-Svecokarelian mineralization exhibits a more radiogenic composition, similar to ~ 0.5 Ga Pb–Zn veins of the Lycksele–Storuman area, constituting a superimposed mineral system, which formed due to far-field effects of the Timanian orogeny or the opening of the Iapetus Ocean. Our results demonstrate that distinguishing between remobilized and superimposed mineral systems in orogenic terrains requires integration of detailed paragenesis with isotope analyses.

查看原文本刊更多论文

造山带再活动和叠加矿化的同位素指纹图谱：Rävliden瑞典Skellefte地区北VMS矿床

稳定同位素和放射性同位素在火山岩块状硫化物（VMS）矿床中追踪流体和金属来源，并区分古代地形中叠加矿物系统。尽管它们在许多VMS地区得到了应用，但对Skellefte地区的同位素研究仍然有限。本文首次获得了变质Rävliden北Zn-Pb-Cu-Ag VMS矿床中黄铁矿、磁黄铁矿、闪锌矿和黄铜矿的原位硫同位素δ 34 S数据。δ 34 S（维也纳峡谷Diablo Troilite， V-CDT）值在-2.67 ~ 3.68‰之间，表明c. 1.88 Ga矿化的原始硫源来源于热液浸出的火山沉积岩。地层上盘硫化物矿物δ 34 S值较大（闪锌矿最高达5.3‰），反映了缺氧条件下古元古代海水硫的同成岩作用。覆印的sverokareian石英脉和硫化物胶结角砾岩中的黄铁矿在同变质生长过程中表现出34 S同位素的渐进式富集，从岩心热液δ 34 S接近零到颗粒边缘~ 5‰。含方解石和沸石的矿脉和角砾岩中的后斯韦卡雷期锌铅矿物表现出稳定的同位素比值（δ 13 C、δ 18 O、δ 114 Cd、δ 66 Zn、δ 56 Fe），与150℃左右还原条件下的大气或原生流体源和降水相一致。Rävliden North的铅同位素表现出典型的Skellefte VMS特征，而后svecokarelian矿化表现出更强的放射性成因成分，类似于Lycksele-Storuman地区的~ 0.5 Ga铅锌矿脉，构成了一个叠加矿物系统，这是由于Timanian造山运动或Iapetus Ocean打开的远场影响而形成的。我们的研究结果表明，区分造山带中再活化和叠加的矿物系统需要结合详细的共生分析和同位素分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Mineralium Deposita 地学-地球化学与地球物理

CiteScore

11.00

自引率

6.20%

发文量

审稿时长

6 months

期刊介绍： The journal Mineralium Deposita introduces new observations, principles, and interpretations from the field of economic geology, including nonmetallic mineral deposits, experimental and applied geochemistry, with emphasis on mineral deposits. It offers short and comprehensive articles, review papers, brief original papers, scientific discussions and news, as well as reports on meetings of importance to mineral research. The emphasis is on high-quality content and form for all articles and on international coverage of subject matter.