科索沃Vardar区TrepçA矿带gersdorfite的地球化学研究

IF 1.1 4区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
Sławomir Mederski, Marcin Wojslaw, Stanislav Prsek, J. Majzlan, S. Kiefer, Burim Asllani
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引用次数: 3

摘要

本文介绍了热液蚀变蛇纹岩(听氏体)中的trepa矿带(Stan Terg和Kizhnica-Hajvalia-Badovc矿田的广大地区)中大量热液Pb-Zn + (Ni-As-Sb)矿化小矿点的gersdorffite的结构和化学研究。通过显微和探针研究,讨论了基日尼察、马日克、美列尼察、弗拉希亚和塞拉克等地发现的格斯多辉石的矿物组合、结构关系和替代趋势。研究区镍矿共生序列主要为Ni - fe - co硫化物→Ni -硫代铁和硫代锑化物(Kizhnica-Badovc和Melenica)和Ni -硫代铁→Ni - fe砷化和二砷化→±Ni硫化物(Vllahia和Selac)。在所研究的GUS中检测到不同的取代趋势:Fe + Co/Ni(除Selac外的所有位点);As/Sb - gersdorffite-ullmannite系列(Kizhnica, Mazhiq, VLX)和As + Sb/S (Selac和VL4)。根据As/S比值,区分出两种不同的热液:窄范围低As/S值(Kizhnica, Mazhiq, Melenica, Vllahia VLX),表明As活性降低,在沉积位点附近混合(Kizhnica, Mazhiq),宽范围高As/S值:As活性增加,不平衡结晶(Selac, Vllahia VL4)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A geochemical study of gersdorffite from the Trepça Mineral Belt, Vardar Zone, Kosovo
This work presents a textural and chemical study of gersdorffite from numerous small occurrences of hydrothermal Pb–Zn + (Ni–As–Sb) mineralization from Trepça Mineral Belt (broad area of Stan Terg and Kizhnica–Hajvalia–Badovc ore field) hosted in hydrothermally altered serpentinites (listvenites). Mineral associations, textural relations and substitutional trends of gersdorffite recognized in Kizhnica, Mazhiq, Melenica, Vllahia and Selac are discussed based on microscopy and microprobe studies. The two types of paragenetic sequence with nickel mineralization are distinguished in studied localities: Ni–Fe–Co sulfides → Ni sulfarsenides and sulfantimonides (in Kizhnica–Badovc and Melenica) and Ni sulfarsenides → Ni–Fe arsenide and diarsenide → ± Ni sulfides (Vllahia and Selac). Various substitution trends in studied GUS are detected: Fe + Co/Ni (all localities, except Selac); As/Sb – gersdorffite–ullmannite series (Kizhnica, Mazhiq, Vllahia VLX) and As + Sb/S (Selac and Vllahia VL4). Based on As/S ratio, two different hydrothermal fluids were distinguished: narrow range and low As/S values (Kizhnica, Mazhiq, Melenica, Vllahia VLX), which suggest decreased As activity, mixing in the proximity of deposition site (Kizhnica, Mazhiq), broad range and high As/S values: increased As activity and disequilibrium crystallization (Selac, Vllahia VL4).
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来源期刊
Journal of Geosciences
Journal of Geosciences GEOSCIENCES, MULTIDISCIPLINARY-MINERALOGY
CiteScore
2.30
自引率
7.10%
发文量
15
审稿时长
>12 weeks
期刊介绍: The Journal of Geosciences is an international peer-reviewed journal published by the Czech Geological Society with support from the Czech Geological Survey. It accepts high-quality original research or review papers dealing with all aspects of the nature and origin of igneous and metamorphic rocks. The Journal focuses, mainly but not exclusively, on: -Process-oriented regional studies of igneous and metamorphic complexes- Research in structural geology and tectonics- Igneous and metamorphic petrology- Mineral chemistry and mineralogy- Major- and trace-element geochemistry, isotope geochemistry- Dating igneous activity and metamorphic events- Experimental petrology and mineralogy- Theoretical models of igneous and metamorphic processes- Mineralizing processes and mineral deposits. All the papers are written in English, even though they may be accompanied by an additional Czech abstract. Each contribution is a subject to peer review by at least two independent reviewers, typically at least one from abroad. The Journal appears 2 to 4 times a year. Formally it is divided in annual volumes, each of them including 4 issues.
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