SEDIMENTARY EXHALATIVE ZN-PB-AG DEPOSITS …
Diagrammatic cross section showing mineral zoning in sedimentary exhalative Zn-Pb deposits (from Briskey, 1986). ... sedimentary rocks that include fine-grained clastic and carbonate rocks. Rocks may be metamorphosed (low to high- ... Lydon, 1983): iron, lead, and zinc (± gold, boron, and copper). Stratiform ore (Large, 1983; Lydon, 1983 ...
Two-stage Cu-Pb-Zn mineralization of the Baoshan deposit …
The Tongshanling ore field is one of the most representative W–Sn–Cu–Pb–Zn polymetallic deposits in the central-western Nanling Ore Belt, which developed multiple mineralization types ...
Ore mineralogy and trace element (re)distribution at the …
Located approximately 180 km northwest of Stockholm (Fig. 1), the Lappberget Zn–Pb–Ag–(Cu–Au) deposit is part of Boliden Mineral AB's Garpenberg mine and is Sweden's oldest still-operating mine.It is located in the Bergslagen mining district, which hosts a wide variety of metamorphosed and deformed, magmatic-hydrothermal, and hydrothermal mineral deposits …
Sediment hosted stratiform barite – (Cu-Zn-Pb) deposits in …
According to the geological classification of Iran (Berberian and King 1981), the studied area is in the northwestern end part of the SSZ.Extended over a strike length of 1500-km and 100–250 km wide, the SSZ, as the tectonomagmatic and metamorphic core of the Zagros continental collision zone, has experienced several phases of metamorphism and magmatism, …
Evolution of skarn to quartz-vein mineralization: Insights …
Skarn deposits are typically developed within or adjacent to hypabyssal intrusions of carbonate rocks (Meinert et al., 2005).They represent an important source of Cu–Fe–Au, Pb–Zn–Ag, and W–Sn globally (Einaudi et al., 1981, Meinert, 1992).Vein-type Pb–Zn ± Ag mineralization commonly develops in the distal zones of magmatic-hydrothermal systems and …
The Chah-Mesi epithermal Cu-Pb-Zn-(Ag-Au) deposit and …
The Chah-Mesi epithermal Cu-Pb-Zn-(Ag-Au) deposit and its link to the Meiduk porphyry copper deposit, SE Iran: Evidence from sulfosalt chemistry and fluid inclusions ... Depending on the grain size, lithic pyroclastic rocks can be subdivided into fine and coarse tuffs (e.g., lapilli tuff; ... Gold and minor enargite also formed during this ...
Ages and sources of components of Zn-Pb, Cu, precious …
Zinc, Pb, and Cu production from about 90 deposits was ~160,000 metric tons (t) (Zn > Pb >> Cu), 2.1 million ounces (Moz) Ag, 0.09 Moz Au, and small amounts of PGEs—Co, V, Hg, Sb, Ni, Mo, Mn, Ir, and U—were also recovered.Zinc-dominant carbonate replacement deposits (Zn > Pb; Ag ± Cu) resemble Mississippi Valley Type (MVT) Zn-Pb deposits ...
Assays up to 18.1 g/t Au, 2,380 g/t Ag, 16.55% Cu, 15.25% Pb…
Underground workings are currently inaccessible due to caving, but sampling of quartz vein material from the Ignacio glory hole returned samples grading 5.77 g/t Au, 14.6 g/t Ag, and 4.48% Cu ...
Refining Base Metal Bullion & By-Product Treatment (Pb, Cu, …
Here is a short account of the treatment of the base bullion for the recovery of lead, silver, and gold, and for the treatment of by-products. Appended is a short description of the …
K2 Gold Reports Assays of up to 375 g/t Au and 2.91% Cu in …
Sampling at the Gold Valley target returned rock grab samples of up to 375 g/t Au (12.1 oz/t) and 142.5 g/t Au (4.6 oz/t) with the first-ever visible gold observed at Mojave noted in …
K2 Gold Reports Assays of up to 375 g/t Au and 2.91% Cu in Rocks …
Assays up to 18.1 g/t Au, 2,380 g/t Ag, 16.55% Cu, 15.25% Pb, and 7.44% Zn in Rocks at K2 Gold's Cerro Gordo Target November 12, 2024 K2 Gold Provides Fall Exploration Update
Leaching of Cu, Zn, and Pb from Sulfidic Tailings Under the …
The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to evaluate …
Evolution of an ancient VMS ore-forming system recorded …
Volcanogenic massive sulfide (VMS) deposits are one of the most important sources of metals (mainly Cu, Zn, Pb ± Au) in the world (Mercier-Langevin et al., 2011, Hannington, 2014, de Ronde et al., 2019).Metallogenesis of this kind of deposit is often complex and multistage, making it difficult for ore geologists to obtain detailed ore-forming information.
Figure 5. Pb-, Zn-, and Cu-bearing particles in soils over gold...
Pb-, Zn-, and Cu-bearing particles were observed in the soil samples over the studied gold deposit. Figure 5 a shows a Pb-and Zn-bearing particle aggregation, approximately 50-100 nm in size and ...
Geochemical and isotopic constraints on the host rocks of …
The Coringa gold-silver (Cu–Pb–Zn) deposit, in southeastern Tapajós Mineral Province (resources of ~12 t Au, 19 t Ag, Prenn et al., 2017), is hosted in felsic volcanic rocks and granite and inferred as having formed by a magmatic-hydrothermal system (Corrêa-Lima and Klein, 2020), which is probably associated to these volcano-plutonic ...
Minerals of the Pb–As–Sb–S and Cu–Pb–As–Sb–S
gold mineralization, Berezitovoe deposit, Mongol-Okhotsk orogenic belt, Upper Amur Area DOI: 10.1134/S1075701519020065 INTRODUCTION Minerals of the Pb–As–Sb–S and Cu–Pb–As– Sb–S systems, Pb–As, Pb-Sb and Pb (Pb–Cu)–As– Sb sulfosalts, are common in Pb–Zn ores of massive sulfide, hydrothermal, and metamorphosed deposits
A Carbonaceous Sedimentary Source-Rock Model for Carlin …
Application of this sedimentary source-rock model enables a systematic exploration approach for sediment-hosted gold deposits, based on the distribution, composition and …
Middle Triassic Cu–Pb–Zn Skarn mineralization in the …
The Cu–Pb–Zn skarn mineralization has also been found in the northwestern section of the Wulonggou gold ore field. It is proposed that Cu–Pb–Zn skarn mineralization is coeval …
Pb-Zn-Cu accumulation from seafloor sedimentation to …
The Tiemurt Pb-Zn-Cu deposit (metal reserve: 0.29 Mt (Pb + Zn) and 0.14 Mt Cu) is hosted in the Kangbutiebao Formation volcanic-sedimentary rocks in the Chinese Altay Orogen, NW China.
Middle Triassic Cu–Pb–Zn Skarn mineralization in the Wulonggou gold …
The skarn type is a significant Cu–Pb–Zn mineralization worldwide (Meinert et al., 2005), and can be recognized in many metallogenic belts, including the East Kunlun and Gangdese Metallogenic Belts in Western China (Zhao et al., 2017).The timing of magmatic-hydrothermal activity is crucial for the formation of skarn mineralization.
Neoproterozoic Zn-Pb mineralization in the world-class …
The extraordinary enrichment of Zn and Pb metals in the Huize deposit, along with the relatively consistent Zn-Pb isotopic compositions of its sulfides (δ 66 Zn JMC = 0.169–0.315 of sphalerite, Wu, 2013; 206 Pb/ 204 Pb = 18.486–18.526 and 207 Pb/ 204 Pb = 15.738–15.806 of galena, Bao et al., 2017), suggest that the majority of the metal ...
K2 Gold Reports Assays of up to 375 g/t Au and 2.91% Cu in Rocks …
Samples containing overlimit silver, copper, lead, or zinc were analyzed by methods Ag-OG62, Cu-OG62, Pb-OG62, and Zn-OG62, which are aqua regia digests with ore grade ICP finishes. About K2 Gold K2 is a proud member of Discovery Group and currently has three projects in Southwest USA and the Yukon.
Determining the relationship between intrusive and volcanic rocks …
The purpose of this research is to determine the temporal relationship between the intrusions and the surrounding volcanic rocks hosting the Lynne Zn-Cu-Pb deposit in Oneida County, WI. Volcanogenic massive sulfide (VMS) deposits are among the richest sources of copper, zinc, lead, silver, and gold that are associated with submarine volcanism ...
Recognition of the Xiayu intermediate-sulfidation epithermal Ag-Pb-Zn
Porphyry Cu ± Mo ± Au deposits are often temporal-spatial-genetically associated with epithermal Ag-Au polymetallic veins, as best exemplified by porphyry Cu systems in the Cordillera and Andes (e.g., Sillitoe, 2010).These porphyry-related polymetallic veins formed late in the porphyry Cu systems under epithermal conditions (<375 °C), and occur in the periphery of …
Mineralogy and petrography of the Keban Pb-Zn-(Cu) skarn …
The Keban Pb-Zn-(Cu) skarn deposit in the Elazığ region, Turkey, was formed at the contact zone of the Permo-Triassic metamorphics and the Late Cretaceous plutonic rocks in the Eastern Taurus ...
Skarn Deposits
Other gold skarns (e.g. McCoy, Nevada, Brooks et al., 1991) are more oxidized, have lower gold grades (1-5 g/t Au), and contain subeconomic amounts of other metals such as Cu, Pb, and Zn. Several other skarn types, particularly Cu skarns, contain …
The geological characteristics, geochemical signature …
deposits, there is an enrichment in Pb, Zn, Mn, Ag, Au and other related elements in the peripheral portions of porphyry systems. These distal zones commonly show Pb-Zn-Ag-(Cu)-bearing epithermal gold veins. The use of elemental ratios, such as Cu-Zn, Pb-Zn, Mo-Mn, Au-Ag and Cu-S (as a sulphide species) often indicate
Contrasting regimes of Cu, Zn and Pb transport in ore …
Sulfur and chlorine are the two most important ligands accounting for metal transport in the upper crust. In this study, four metal- and sulfur-saturated model fluids with varying salinities and redox states were simulated in the Fe-Cu-Pb-Zn-Au-S-C-H-O system, over a wide pressure-temperature (P-T) range (50–650 °C, 0.8–5.0 kbar), in order to compare the …
A review of the geological characteristics and spatiotemporal
The Sarsuk polymetallic gold deposit is located in the South Altay and occurs ∼ 5.6 km NNE of the large Ashele Cu–Zn–(Au) deposit and hosts 11.4 t of Au, 7.2 × 10 4 t of Cu, 21.3 …
Gold enrichment and the Au–Te association in the Huangtan Au–Cu–Zn
Volcanogenic massive sulfide (VMS) deposits are strata-bound accumulations of sulfide minerals that precipitated at or near the seafloor in spatial, temporal, and genetic association with contemporaneous volcanism and are one of the most important sources of metals (Zn, Cu, Pb, Ag, and Au) in the world (Franklin et al., 2005).