Mineral Indicators of Hydrothermal Activity in the Surface Layer of Bottom Sediments in the Pobeda Hydrothermal Cluster (17°44.9′‒17°07.6′ N MAR)

IF 0.7 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS Lithology and Mineral Resources Pub Date : 2023-07-07 DOI:10.1134/S0024490223700189

A. D. Lyutkevich, I. F. Gablina, E. V. Narkevsky, I. G. Dobretsova, A. A. Kiselev, N. V. Gor’kova

{"title":"Mineral Indicators of Hydrothermal Activity in the Surface Layer of Bottom Sediments in the Pobeda Hydrothermal Cluster (17°44.9′‒17°07.6′ N MAR)","authors":"A. D. Lyutkevich, I. F. Gablina, E. V. Narkevsky, I. G. Dobretsova, A. A. Kiselev, N. V. Gor’kova","doi":"10.1134/S0024490223700189","DOIUrl":null,"url":null,"abstract":"The work is devoted to the study of ore minerals from the surface horizon of ore-bearing sediments in the Pobeda hydrothermal cluster using the following methods: optical microscopy, scanning electron microscopy, and X-ray spectral microanalysis. It was found that ore minerals are represented by fragments of Cu–Fe sulfides (isocubanite, chalcopyrite, and pyrite), newly formed iron hydroxides, and atacamite. In addition, barite and edaphogenic material as talcified silicate clasts, sometimes with sulfide inclusions, are present. Structural-morphological types of iron hydroxides are distinguished. Based on the hydrophysical data, the location of assumed active hydrothermal vent in the Pobeda-3 ore occurrence area was updated. Distribution of the studied minerals depending on the location relative to active hydrothermal vents is described. Decrease in the size and amount of hydrothermal mineral clasts and edaphogenic material, as well as increase in the degree of sulfide replacement by iron hydroxides, were observed when moving away from the sources. Moreover, decrease in the Cu/Fe ratio in the chemical composition of Cu–Fe sulfides is also noted. An unidentified phase of Cu3.57‒4.22Fe1.71‒2.19S4.99‒5.31 with the chalcopyrite lamellas was established in the surface horizon of the column at station 37L245g.","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"58 4","pages":"291 - 310"},"PeriodicalIF":0.7000,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lithology and Mineral Resources","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1134/S0024490223700189","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}

引用次数: 0

Abstract

The work is devoted to the study of ore minerals from the surface horizon of ore-bearing sediments in the Pobeda hydrothermal cluster using the following methods: optical microscopy, scanning electron microscopy, and X-ray spectral microanalysis. It was found that ore minerals are represented by fragments of Cu–Fe sulfides (isocubanite, chalcopyrite, and pyrite), newly formed iron hydroxides, and atacamite. In addition, barite and edaphogenic material as talcified silicate clasts, sometimes with sulfide inclusions, are present. Structural-morphological types of iron hydroxides are distinguished. Based on the hydrophysical data, the location of assumed active hydrothermal vent in the Pobeda-3 ore occurrence area was updated. Distribution of the studied minerals depending on the location relative to active hydrothermal vents is described. Decrease in the size and amount of hydrothermal mineral clasts and edaphogenic material, as well as increase in the degree of sulfide replacement by iron hydroxides, were observed when moving away from the sources. Moreover, decrease in the Cu/Fe ratio in the chemical composition of Cu–Fe sulfides is also noted. An unidentified phase of Cu_3.57‒4.22Fe_1.71‒2.19S_4.99‒5.31 with the chalcopyrite lamellas was established in the surface horizon of the column at station 37L245g.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

Pobeda热液团(17°44.9′-17°07.6′N MAR)底部沉积物表层热液活动矿物指标

利用光学显微镜、扫描电子显微镜和x射线光谱显微分析等方法，研究了Pobeda热液团簇含矿沉积物的表层矿物。矿石矿物以铜铁硫化物(等铜矿、黄铜矿和黄铁矿)的碎片、新形成的氢氧化铁和阿脱石为代表。此外，还存在重晶石和发辉物质，如滑石硅酸盐碎屑，有时带有硫化物包裹体。氢氧化铁的结构形态类型得到了区分。根据水物理资料，更新了Pobeda-3矿产区假定活动热液喷口位置。描述了所研究矿物的分布取决于相对于活动热液喷口的位置。当远离矿源时，热液矿物碎屑和成矿物质的大小和数量减少，硫化物被氢氧化铁取代的程度增加。此外，还注意到Cu - Fe硫化物的化学成分中Cu/Fe比的降低。在37L245g站柱的水平面上发现了一个未识别的cu3.57 ~ 4.22 fe1.71 ~ 2.19 s4.99 ~ 5.31相和黄铜矿片层。

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分钟内获得全文去求助

来源期刊

Lithology and Mineral Resources 地学-地球化学与地球物理

CiteScore

1.30

自引率

37.50%

发文量

审稿时长

>12 weeks

期刊介绍： Lithology and Mineral Resources is an international peer reviewed journal that publishes articles on a wide range of problems related to the formation of sedimentary rocks and ores. Special attention is given to comparison of ancient sedimentary rock and ore formation with present-day processes. The major part of the journal is devoted to comparative analysis of sedimentary processes on the continents and in oceans, as well as the genetic aspects of the formation of sedimentary and hydrothermal–sedimentary mineral resources. The journal welcomes manuscripts from all countries in the English or Russian language.