Mercury processing | Extraction, Uses & Hazards | Britannica

Category: Science & Tech. Related Topics: materials processing. mercury processing, preparation of the ore for use in various products. Mercury (Hg) has a unique …

Ore Geology Reviews | Vol 149, October 2022

Comments on "Mineral chemistry of hydrothermal alteration assemblage in hanging wall Shahapur Granite associated with vein type Gogi uranium deposit, Bhima basin, Eastern Dharwar Craton, India: Implication for physico-chemical conditions of ore formation" by Mohd Qaim Raza and Nurul Absar. [Ore Geol. Review, 2021, 128, 1–20] D.K. Sinha.

Seasonal Variations of the Mercury Multiple Isotopic Compositions …

The mechanisms triggering the large variations in the mercury (Hg) multiple isotopic compositions of atmospheric particle-bound Hg worldwide still remain unclear. The comparison of Hg isotopic ...

Mercury isotopic compositions of the Precambrian rocks

THg contents and Hg isotopic compositions of the studied samples are given in Supplementary Table S1. The rocks have an overall range of THg contents of 0.21 ... Different metal sources in the evolution of an epithermal ore system: Evidence from mercury isotopes associated with the Erdaokan epithermal Ag-Pb-Zn deposit. NE …

Mercury stable isotope compositions in magmatic

Mercury (Hg) is commonly present at trace levels in coal deposits. Geological processes, particularly magmatic intrusion and hydrothermal cycling in coal-bearing strata can significantly increase Hg levels in coals.However, the effects of thermal stress, magmatic components, magmatic-hydrothermal fluids, low-temperature …

Isotope geochemistry of mercury in source rocks

Mercury concentrations are . Ore deposits, thermal springs and geothermal systems. Mercury isotope compositions were determined for cinnabar …

Mercury Isotopes as Proxies to Identify Sources and …

Feng X. et al. Tracing mercury contamination sources in sediments using mercury isotope compositions. Environ. Sci. Technol. 44, 3363–3368 (2010). ... Stetson S. J., Gray J. E., Wanty R. B. et al. Isotopic variability of mercury in ore, mine-waste calcine, and leachates of mine-waste calcine from areas mined for mercury. Environ. Sci.

Mercury stable isotopic compositions in coals from major …

It is demonstrated that Hg isotopes can serve as a tool in understanding the sources and transformation of Hg in coals and may also be used as a tracer to quantify Hg emissions from coal combustion. Total mercury (Hg) concentrations (THg) and stable mercury isotopic compositions were measured in coal samples (n = 61) from major …

Ore Geology Reviews | Vol 156, May 2023

Source of gold and ore-forming processes in the Zarshuran gold deposit, NW Iran: Insights from in situ elemental and sulfur isotopic compositions of pyrite, fluid inclusions, and O−H isotopes. Ebrahim Tale Fazel, Jan Pašava, Franziska D.H. Wilke, Abbas Oroji, Irina Andronikova. Article 105382. View PDF.

Mantle Hg isotopic heterogeneity and evidence of …

Mercury ore deposits are predominantly located in active continental margin settings, with two well-known mercuriferous ... Distinct Sr-Nd-Pb isotopic compositions of mid-ocean ridge

ISOTOPIC GEOCHEMISTRY OF MERCURY IN ACTIVE AND …

compositions measured in natural samples was found to be 5.8 ‰ δ202Hg (δ202Hg/198Hg; relative to NIST 3133) or greater than 72 times the analytical precision …

Tracing mercury contamination sources in sediments using mercury …

Mercury (Hg) isotope ratios were determined in two sediment cores collected from two adjacent reservoirs in Guizhou, China, including Hongfeng Reservoir and Baihua Reservoir. Hg isotope compositions were also analyzed in a soil sample collected from the catchment of Hongfeng Reservoir and three cinnabar samples collected from …

Sources and fate of mercury pollution in Almadén

Variations in mercury (Hg) isotopic compositions have been scarcely investigated until now in the Almadén mining district (Spain), which is one of the most impacted Hg areas worldwide. In this work, we explore and compare Hg isotopic signatures in sediments and lichens from Almadén mining district and its surroundings in order to …

(PDF) Mercury Stable Isotopic Compositions in …

Total mercury (Hg) concentrations (THg) and stable mercury isotopic compositions were measured in coal samples (n = 61) from major coal producing fields in China. The THg concentrations in coals ranged from …

Mercury Isotopes as Proxies to Identify Sources and …

The average isotopic composition in studied sphalerites ( δ202Hgaverage: −0.58‰; Δ 199Hgaverage: +0.03‰) may be used to fingerprint Zn smelting activities, …

New insight into the source of metals in Hg deposits at the

@article{Ni2022NewII, title={New insight into the source of metals in Hg deposits at the southwestern margin of the Yangtze Platform, China: Evidence from mercury stable isotope compositions}, author={Xinran Ni and Ruidong Yang and Wei Yuan and Xun Wang and Jun Chen and Ge Zhang and De-zhi Li and Li‐Juan Du and Lei …

Isotope geochemistry of mercury in source rocks, mineral …

USGS Publications Warehouse. We present here the first study of the isotopic composition of mercury in rocks, ore deposits, and active spring deposits from the …

Metacinnabar in the Wanshan Mercury Ore Field,

selenium-bearing metacinnabar; Wanshan mercury ore field; Eastern Guizhou 1. Introduction Cinnabar ( -HgS), the most common sulfide of mercury, has a hexagonal struc- ... Chemical compositions of metacinnabar from some mercury deposits (wt.%). No. Hg Fe Zn Cd Se S Total Ore Occurrence Deposit Reference 1 85.54 0.04 …

Mercury isotopic compositions of iron …

Mercury (Hg) is a heavy metal of great interest to geoscientists because its seven natural stable isotopes (196, 198-202, 204) display both large isotope mass-dependent

Mercury isotopic compositions of iron oxide-copper-gold …

Mercury isotopic compositions of iron oxide-copper-gold (IOCG) hydrothermal systems. Published: 16 June 2023 | Version 1 | DOI: 10.17632/hwwxbg99sd.1. ... Isotope Geochemistry, Ore Deposit, Hydrothermal Mineral Deposit. Licence CC BY 4.0 Learn more. Dataset metrics. Home | About | Accessibility …

New insight into the source of metals in Hg deposits at the

Mass-independent fractionation (MIF) of Hg isotopes with slight positive Δ¹⁹⁹Hg (0.03‰ to 0.22‰) was observed in the Hg ore samples, indicating that Hg transported by the ore fluids was ...

Isotope geochemistry of mercury in source rocks

Mercury isotope compositions were determined for cinnabar from mercury deposits and siliceous precipitates from waters in wells, active springs and The Geysers geothermal area (Table 3). Isotopic compositions of mercury in the mercury deposits are very similar to those of the host rocks, but extend over a larger range, …

(PDF) Gold and antimony metallogenic relations …

Gold, antimony and mercury ore formation and metallogenic link in the Sandu-Danzhai area, Jiangnan Orogen, SW China ... Hydrogen and oxygen isotope compositions of the fluid inclusions (in ...

Sulfur and lead isotopic compositions of massive

In this paper, we present the first results of S and Pb isotope analyses of massive sulfides from the EPR near 1–2°S, the MAR near 13°S, the CIR at Kairei hydrothermal field (KHF), Edmond hydrothermal field (EHF) at 25°S, and the Southwest Indian Ridge (SWIR) in area A (Fig. 1).In addition, δ 34 S and Pb isotope analyses were …

Different metal sources in the evolution of an epithermal ore …

Here, we present the Hg isotopic compositions of ore minerals from five representative IOCG deposits in the Kangdian region, South China. All the studied ore samples display large mass-dependent fractionation with δ 202 Hg of −3.23 to 1.06‰, but a relatively narrow range of Δ 199 Hg of −0.17 to 0.11‰.

Mercury Isotopes as Proxies to Identify Sources and

Total mercury concentration and mercury isotopic composition analysis. Approximately 0.2 g of each sample was digested (95 °C, 1 hour) using a 5 mL aqua …

Fluid inclusion and H–O-S-Pb isotope constraints on the …

The subtypes of ore bodies are represented by the No. 2, 3, 7 and 10 ore bodies in the southern ore block and the No. 16, 28, 55 and 45 ore bodies in the northern ore block, respectively (Fig. 2). The bulk of the economic Hg and Sb mineralization is in the southern ore block, whereas the northern ore block has less Sb resources and contains …

Advances in the Study on Mercury Isotope Geochemistry …

To summarize the mercury isotope compositions of different geological reservoirs (meteorites, terrestrial rocks, coal, sediments, volcanic emissions, epithermal deposits) and investigate the factors controlling the Hg isotope fractionation during ore-forming processes in epithermal deposits. ... Xiao C Y, Wen H J, et al. Homogeneous Zn isotopic ...

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Sean C. Solomon, Larry R. Nittler and. Brian J. Anderson. Chapter. Get access. Cite. Summary. Geochemical measurements from the MESSENGER mission …

Mineralogy, geochemistry and fluid inclusions of the

Ore-forming fluids were of mixed H 2 O-NaCl-hydrocarbon ± CO 2 aqueous fluids. ... Evidence from mercury stable isotope compositions. 2022, Ore Geology Reviews. Show abstract. The genesis of the typical Hg-Au-Sb metallogenic district in the southwestern margin of the Yangtze Craton, Southwestern China, remains controversial. …

Mercury speciation and mercury isotope fractionation during ore …

The webpage presents a study of mercury isotope fractionation during ore retorting in the Almadén mining district, Spain, using high-precision mass spectrometry. The results show that different retorting techniques produce distinct isotopic signatures of mercury, which can be used to trace the sources and pathways of mercury pollution in …

Cinnabar: The mercury mineral cinnabar: information and …

Cinnabar is the chief mineral composed of the element mercury, and is a very important ore mineral. Though most Cinnabar is massive and uninteresting in habit, several localities …