Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society最新文献_第9页

Order of osakaite–namuwite–lahnsteinite formation during alkalization of sulfate solutions 硫酸盐溶液碱化过程中osakaite–namuwite–lahnsteite形成的顺序

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.2.51

Z. Delcheva, T. Stanimirova, N. Petrova

{"title":"Order of osakaite–namuwite–lahnsteinite formation during alkalization of sulfate solutions","authors":"Z. Delcheva, T. Stanimirova, N. Petrova","doi":"10.52215/rev.bgs.2022.83.2.51","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.2.51","url":null,"abstract":"Experiments with dropwise alkalization of a 0.1 M ZnSO4 solution with 1M NaOH were carried out to establish the formation order of Zn-hydroxy-sulfate minerals (osakaite, namuwite, and lahnsteinite). During the controlled alkalization with 1M NaOH of a 0.1M ZnSO4 solution, namuwite (osakaite), lahnsteinite and wulfingite are successively formed. The obtained precipitates were characterized by powder X-ray diffraction (XRD) and SEM-EDS methods. The formation conditions and regions of stability of osakaite and namuwite are at near circumneutral pH (6.5–7), while lahnsteinite is stable at high pH (11–12). This explains the wider distribution of namuwite and osakaite in nature. The isomorphic substitution of Zn2+ cation with Cu2+ in the hydroxide layer of the Zn-hydroxy-sulfate minerals during controlled alkalization was studied using mixed 0.1M ZnSO4 + CuSO4 solution (molar ratio Zn:Cu = 4:1 and 1:1). During controlled alkalization of mixed Zn-Cu sulfate solutions, 25% copper cations are isomorphic incorporated in the namuwite (osakaite) and lahnsteinite structures. It was determined that this Cu2+ content is the upper limit of the isomorphism and corresponds to the occupation of 1/3 of octahedral positions.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43340350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calcareous nannoplankton response model of the global warming at the Paleocene-Eocene boundary in Riben section, Northern Bulgaria 保加利亚北部里本地区古新世-始新世边界全球变暖的钙质浮游动物响应模型

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.157

K. Stoykova, M. Ivanov

引用次数: 1

Geochemistry of Triassic metasediments from easternmost part of Sakar Unit, Sakar-Strandzha Zone, SE Bulgaria 保加利亚东南部萨卡尔-斯特兰扎带萨卡尔单元最东部三叠纪变质沉积物的地球化学

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.85

M. Georgieva, Tzvetomila Vladinova

引用次数: 0

Mineral composition of quartz-polymetallic veins in Sally Rocks, Livingston Island, Antarctica 南极洲利文斯顿岛萨利岩石英多金属矿脉的矿物组成

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.182

Ralica Sabeva, Stefan Velev

引用次数: 0

Interpretation of CPTu and SPT data about sandy soils in the Plovdiv region 普罗夫迪夫地区沙质土壤的CPTu和SPT数据解释

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.235

Lyubomir Angelov, Tanya Vasileva

引用次数: 0

Optical cathodoluminescence petrography, combined with SEM and LA-ICP-MS analyses: a case study from the Elatsite porphyry Cu-Au deposit 光学阴极发光岩相学与SEM和LA-ICP-MS分析相结合:以黄铜矿斑岩型铜金矿为例

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.117

Elitsa Stefanova, M. Kadiyski, S. Georgiev, A. Hikov, Sylvina Georgieva, I. Peytcheva

{"title":"Optical cathodoluminescence petrography, combined with SEM and LA-ICP-MS analyses: a case study from the Elatsite porphyry Cu-Au deposit","authors":"Elitsa Stefanova, M. Kadiyski, S. Georgiev, A. Hikov, Sylvina Georgieva, I. Peytcheva","doi":"10.52215/rev.bgs.2022.83.3.117","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.117","url":null,"abstract":"In the present research, we have applied a combination of Cold-CL petrography with two in-situ techniques (SEM-EDS and LA-ICP-MS) to study quartz-pyrite-sericite veins with some carbonates from the Elatsite porphyry Cu-Au deposit. Based on Cold-CL images, we found out that these veins are formed during two stages: quartz-pyrite with sericite and later quartz-carbonate with chlorite. Together with the quartz and carbonates small amount of arsenian pyrite, hematite, chalcopyrite, sphalerite, galena and apatite are precipitated. SEM-EDS and LA-ICP-MS allowed determining that the observed zoning of the pyrite from Q-Py stage is due to a variable Co and Ni content. Similarly, the zonal growth of calcite is due to variable Mn content. Pyrite and arsenian pyrite have different trace element composition. Arsenian pyrite has elevated Au, Ag, Cu, Pb, Sb and Tl contents compared to the pyrite. The combination of the three techniques was essential for resolving temporal relationships between the minerals within quartz-pyrite-carbonate veins and changes of the composition of the pyrite from the quartz-pyrite-sericite to the later quartz-carbonate stage.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48921634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Depositional conditions for Lower–Middle Jurassic sedimentary rocks from Northern Bulgaria inferred from whole-rock elemental composition 从全岩元素组成推断保加利亚北部下中侏罗世沉积岩的沉积条件

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.81

S. Georgiev, Gatien L. F. Morin, L. Bidzhova, N. Botoucharov

{"title":"Depositional conditions for Lower–Middle Jurassic sedimentary rocks from Northern Bulgaria inferred from whole-rock elemental composition","authors":"S. Georgiev, Gatien L. F. Morin, L. Bidzhova, N. Botoucharov","doi":"10.52215/rev.bgs.2022.83.3.81","DOIUrl":"https://doi.org/10.52215/rev.bgs.2022.83.3.81","url":null,"abstract":"The Lower–Middle Jurassic sedimentary rocks from Northern Bulgaria represent important stratigraphic markers and a potential source for oil and gas accumulation. Here, we present preliminary major and trace element results for 22 sedimentary rock samples from the Bachiishte, Ozirovo, and Etropole Formations collected from the Balkanides and the Moesian Platform in Central-northern and Northwestern Bulgaria. The three studied formations have largely similar geochemical characteristics. The application of established geochemical proxies and comparison with recent and ancient sediments suggests that the samples were deposited in a shallow, high-energy environment with no water restriction. Eroding mafic to intermediate lithologies provided the sediment into the submerging Moesian Platform. Most redox-sensitive geochemical parameters suggest an overall oxygenated environment during sediment deposition, although specific samples show evidence for periodically dysoxic or anoxic water column conditions.","PeriodicalId":40733,"journal":{"name":"Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48876790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Characteristics and features of the hydrochemical regime of groundwater in the upper Pontian aquifer, Northwest Bulgaria 保加利亚西北部Pontian含水层上部地下水水化学状态的特征和特征

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.267

Aglaida Toteva, S. Tsakovski

引用次数: 0

Cambrian magmatism in the Vlahina Mt. (SW Bulgaria) – correlation with the Vertiskos Unit (Serbo-Macedonian Massif) 弗拉希纳山（保加利亚西南部）的寒武纪岩浆活动——与Vertiskos单元（Serbo Macedonian Massif）的相关性

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.2.41

P. Machev, Lyubomirka Macheva, J. Plotkina, Е.V. Salnikova, M. Stifeeva, Irena Peycheva

引用次数: 0

Long-term monitoring of recent crustal movements in the region of Southwestern Bulgaria. Results from 2022 保加利亚西南部地区近期地壳运动的长期监测。2022年的结果

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Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society Pub Date : 2022-12-01 DOI: 10.52215/rev.bgs.2022.83.3.293

N. Dimitrov, R. Nakov

引用次数: 1