Order of sphalerite and galena precipitation: A case study from lead-zinc deposits in southwest China

Yan, Zhaokun; Ren, Han; Wei, Pingtang

doi:10.1007/s11771-020-4296-z

Cited by 10 publications

(3 citation statements)

References 73 publications

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“…6) Obvious mineral assemblage zoning (Zoning): There is clear zoning in the mineral assemblages in the ore-controlling fault zone, particularly in the NEYD. From the footwall to the hanging wall of the ore-bodies, zoning varies from a deep colour sphalerite + quartz + ferro-dolomite to brown and rosiness sphalerite + galena + pyrite, to pyrite + calcite + dolomite, showing that there are ore-forming fluid differentiations in the mineral crystallisations (Zhang et al, 2020).…”

Section: Typical Sygt Deposit Characteristicsmentioning

confidence: 99%

“…Numerical simulations have shown that large amounts of Zn and Pb metal can migrate through a chlorine complex. Physical chemistry phase diagrams indicate a lower pH, higher solubility, and enhanced ability to transport metals (Zhang et al, 2020). Moreover, hydrolysis experiments (Zhang et al, 2019a) indicate that a pH of less than four is a favourable condition for transporting a large number of metals.…”

Section: Zn-pb Supernormal Enrichment Mechanismsmentioning

confidence: 99%

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Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type

et al. 2023

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Mississippi Valley Type (MVT)1 deposits represent the majority of carbonate-hosted Zn–Pb deposits globally. They typically form in an extensional tectonic setting along passive margins. However, studies on carbonate-hosted Zn–Pb deposits in the Sichuan–Yunnan–Guizhou Triangle area (SYGT) reveal differences in terms of the essential features of typical MVT deposits. We discuss the main features of these deposits, controlled by folds and faults, high-grade Zn–Pb ores and symbiotic or associated elements (i.e., abundant Ag and dispersed amounts of Ge, Ga, and Cd) of significant economic value. Based on a comparison of Pb-Zn deposits in SYGT and classical MVT deposits formed in an extensional tectonic setting, as well as a subsequent discussion on deposit classification, we propose that the Huize-style Zn–Pb deposits are a new deposit style, whose basic features can guide future ore exploration. We define the Huize-style deposits based on four factors: i) Hierarchical ore-controlling system of strike-slip fault-fold structures, ii) litho-facies associated with typical alternation and mineralisation, iii) ore-forming geochemical features revealed by typical mineral assemblages, mineralisation alteration zoning, fluid-inclusion, isotope geochemistry and metallogenic acid–alkali geochemical barriers, and iv) different prospecting methods to those typically used for MVT deposits. The Huize-style and typical MVT deposits constitute the carbonate-hosted non-magmatic epigenetic hydrothermal-type (CNHT) Zn–Pb deposits.

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Section: Typical Sygt Deposit Characteristicsmentioning

confidence: 99%

Section: Zn-pb Supernormal Enrichment Mechanismsmentioning

confidence: 99%

Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type

et al. 2023

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“…The amount of Ag recycled from LAS accounts for more than 70% of the total Ag output, and this proportion is still rising [13,14]. The amount of Au recovered from LAS represents more than 8% of the annual gold output [15]. With the increasing scarcity of precious metal-rich ores, clean and efficient recovery of Ag and Au from LAS is gaining traction.…”

Section: Introductionmentioning

confidence: 99%

Separation and Enrichment of Au and Ag from Lead Anode Slime by a Selective Oxidation–Vacuum Volatilization–Carbon Reduction Process

Yi,

Gao,

et al. 2024

Metals

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Huge amounts of Au and Ag are recovered from the hazardous waste lead anode slime. The conventional extraction of precious metals from lead anode slime is based on pyrometallurgical and electrolytic processes, which are seriously conditioned by the separation of harmful elements As and Sb. In this paper, an innovative and efficient oxidation–vacuum volatilization–carbon reduction process was proposed to separate and enrich Ag and Au from lead anode slime. Before vacuum volatilization, selective oxidation of the lead anode slime was performed. Then, vacuum volatilization and vacuum carbon reduction were used to obtain a gold- and silver-rich alloy. The feasibility of the process was verified experimentally and theoretically. The effects of temperature and time on vacuum volatilization separation and reduction enrichment were investigated. The experimental results showed that the Ag content in the resulting gold- and silver-rich alloy was as high as 67.58%, Au was as high as 4287 g/t, and the efficiencies for the recovery of Ag and Au from the lead anode slime were 99.25% and 99.91%, respectively. The gold- and silver-rich alloy can be directly used to produce Ag ingots. Moreover, no gas or wastewater was discharged in this process, so Ag and Au were recovered in a sustainable and cleaner manner.

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Zn–S isotopic fractionation effect during the evolution process of ore-forming fluids: A case study of the ultra-large Huize rich Ge-bearing Pb–Zn deposit

Yan

Ren

Wang

et al. 2022

Applied Geochemistry

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Order of sphalerite and galena precipitation: A case study from lead-zinc deposits in southwest China

Cited by 10 publications

References 73 publications

Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type

Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type

Separation and Enrichment of Au and Ag from Lead Anode Slime by a Selective Oxidation–Vacuum Volatilization–Carbon Reduction Process

Zn–S isotopic fractionation effect during the evolution process of ore-forming fluids: A case study of the ultra-large Huize rich Ge-bearing Pb–Zn deposit

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