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Cordilleran Epithermal Cu-Zn-Pb-(Au-Ag) Mineralization …
The zoning from Cu ores to Zn-Pb ores is complex and comprises a number of distinct and well-defined zones that display abrupt or gradual interfaces between zones. From internal to …
Metamorphosed Pb–Zn–(Ag) ores of the Keketale VMS …
LA-ICP-MS analyses of two generations of pyrite indicate that the banded pyrite of stage A is relatively depleted in metallic elements and contains low contents of Cu (0.39 ppm), Ag (0.20 ppm), Au (below the detection limits), Pb (17.43 ppm) and Zn (14.38 ppm); whereas the pyrite in quartz–polymetallic sulfide veinlets of the stage B is ...
Textures and trace element geochemistry of pyrite in Gaoloushan ore
The differences in the geochemical characteristics of the ore-forming elements (Cu, Pb, Zn, Au, ... However, considerable slope change is observed in the element content of samples from the gold ore body, with Bi, Pb, Sb, Se, As, Cu, and Ag showing an increasing trend, Sb, Se, and Zn showing a decreasing trend, and Co and Ni first decreasing ...
Fluid inclusion and metal ratio analysis of cordilleran Pb-Zn-Cu …
Fluid inclusion and metal ratio analysis of cordilleran Pb-Zn-Cu-(Ag-Au) veins of the Montezuma district: Summit County Colorado, USA ... is an uncommon example of a sublacustrine hydrothermal system containing economic high-sulfidation epithermal mineralization. ... As the miner-alizing fluids discharged into lakes, they produced syngenetic Ag ...
[PDF] Porphyry Cu–Au–Mo–epithermal Ag–Pb–Zn–distal …
The Yinshan deposit in the Jiangnan tectonic belt in South China consists of Pb‐Zn‐Ag and Cu‐Au ore bodies. This deposit contains approximately 83 Mt of the Cu‐Au ores at 0.52% Cu and 0.8 g/t Au, and … Expand
Epithermal
Epithermal deposits are important sources of gold and silver, representing about 30% of total gold metal production per year. There are two principal styles of epithermal mineralization: low sulphidation (LS) and high sulphidation (HS) epithermal deposits with an intermediate category sometimes recognized.
POLYMETALLIC VEIN AND REPLACEMENT DEPOSITS …
Polymetallic vein and replacement deposits are characterized by elevated abundances of Pb-Zn±Cu±Au±Ag±Mo±As ± Bi±Sb. In some districts, ore proximal to igneous intrusions is copper and gold rich, and grades laterally (and sometimes vertically) into lead-zinc-silver-rich ore. A distal, manganese-enriched zone is present in some districts.
Feasibility Study of Differential Flotation of Cu–Pb–Zn …
In this research, flotation of copper, lead and zinc minerals from a copper oxide–sulfide ore was studied. The identification tests showed that the sample is a mixture of quartz, chalcopyrite ...
Origin of hydrothermal dolomitization in the Huize Zn–Pb ore …
The Huize MVT ore deposit, situated in northeastern Yunnan province, SW China, is closely associated with hydrothermal dolomitization (Li et al., 2017, Wen et al., 2014).Zn–Pb orebodies are commonly hosted in medium- to coarse-crystalline dolostone (Li et al., 2017, Wen et al., 2014).The ore-forming mechanism has been well documented (Bao et al., 2017, Han et …
Details of the Tianpeng Formation from the Sanbao deposit.
The Sanbao Mn–Ag (Zn-Pb) deposit located in the Laojunshan ore district is one of the most important deposits that has produced most Ag and Mn metals in southeastern Yunnan Province, China.
Contrasting regimes of Cu, Zn and Pb transport in ore …
Pb and Zn solubilities increase by one to two orders of magnitude as salinity increases from 3.4 to 22.6 wt.% NaCl (Fig. 4), and oxidized high-salinity fluids (Sol. #1) can …
Element (Ag, Cd, Cu, Pb, Sb, Tl and Zn), element ratio and …
The Zn/Pb ratio decreases from around 10 at 30 cm to 3–4 at the lowest at 20 cm. A sharp increase takes the ratio to 20–25 at 12 cm. The Zn/Pb ratio has a local maximum of 20–25 at 12 cm, a local minimum of 3–4 at 20 cm and a reference value of 10 at 30 cm. Until today the ratio in the sediment has been relatively stable.
Zn/Cu
Zinc Supplementation: Excessive zinc supplementation can lead to an elevated Zn/Cu ratio. While zinc is important for immune function, skin health, and other processes, too much zinc can disrupt the balance with copper and lead to copper deficiency. Copper Deficiency: A high Zn/Cu ratio might also indicate a deficiency in copper levels. Copper ...
Porphyry Cu–Au–Mo–epithermal Ag–Pb–Zn
The Dele Mesozoic volcanic basin in the northern Jiangxin province, Southeastern China (Fig. 1) hosts three significant ore deposits: the Dexing porphyry Cu–Au–Mo deposit; the Yinshan Ag–Pb–Zn vein deposit; and the Jinshan shear zone-hosted gold deposit.Mining of these deposits began in the Sui and Tang Dynasties (605–908 A.D.) for Dexing and Yinshan, …
Finger Pb-Zn mineralization events in the SW …
The Yangtze Block is an area where carbonate rocks are developed and represent one of the world's largest Pb-Zn provinces (Zhao et al., 2023).In recent decades, many Pb-Zn deposits have been discovered in the carbonate rock formations around and on the margins of uplifts (Rui et al., 2004, Li et al., 2020).The Pb-Zn mineralization belt is located on the …
Genetic link between the Kangjiawan gold deposit and late …
This age is well consistent with the published zircon U-Pb age (158.3 ± 1.2 Ma) of the nearby Shuikoushan granodiorite, the molybdenite Re-Os age (157.8 ± 1.4 Ma) of the Laoyachao skarn Pb-Zn deposit in the Shuikoushan ore field, and the garnet U-Pb age (159.1 ± 1.9 Ma) of the skarn Pb-Zn ore in depth of the Kangjiawan Au deposit.
On the aqueous oxidation of polymetallic Cu-Zn-Pb gold
Request PDF | On the aqueous oxidation of polymetallic Cu-Zn-Pb gold-bearing sulphide ore in an autoclave | The paper presents a study on the oxidation of polymetallic gold ore by oxygen in an ...
Pb/Zn Ores
As described in the lead-zinc ore processing section, zinc sulphate and metabisulphide sphalerite and pyrite depressants, respectively, are typically added to grinding. Then a Cu-Pb bulk …
Reactive transport numerical modeling of intermediate …
Recently, a geology and chronology study of the epithermal Ag-Pb-Zn-Au(Cu) deposits in the Xiayu orefield of Xiong'ershan district showed that U Pb dating of syn-ore monazite and xenotime from the Shagou, Haopinggou, and Tieluping deposits constrains the Ag-Pb-Zn-Au mineralization age to be 125.7 ± 1.8 Ma to 123.3 ± 1.7 Ma; thus, it suggested ...
Recognition of the Xiayu intermediate-sulfidation epithermal Ag-Pb-Zn
The Xiong'ershan district is located in the middle of the East Qinling ore belt, and hosts a number of porphyry Mo (-W), vein/disseminated Au, breccia-hosted Au, and vein type Ag-Pb-Zn deposits, of which the vein-type Ag-Pb-Zn and Au ores usually developed in separation (Fig. 1).The Xiayu Ag-Pb-Zn-Au(-Cu) orefield is the largest Ag producer (5640 t Ag) in the ore …
Deciphering ore-forming fluid evolution processes of the Yuerya gold
Additionally, the gold-rich pyrite exhibits lower Cu (1.87–21.86 ppm) and V (0.039–0.49 ppm) levels, while the poor-gold pyrite contains higher Cu (1.59–1730.04 ppm) and V (0.05–0.812 ppm). It's worth noting that in different pyrite types, there are elements such as W that fall below the detection limit.
Ore geology and fluid inclusion geochemistry of the Tiemurt Pb–Zn–Cu …
Orogenic gold deposits are the main source of gold reserves in the world and their geochemical characteristics and tectonic settings are known to geologists (Groves et al., 1998).The possibility and potential of orogenic-type Ag, Pb–Zn, Cu, Mo and other metals are proposed, considering their geochemical similarities (Chen et al., 2004b, Chen, 2006, Pirajno, …
A giant porphyry-skarn-epithermal Mo-W-Cu-Zn-Pb-Ag …
The Nannihu ore field is largely represented by the Nannihu Mo-W deposit, Luotuoshan Zn-Cu-W deposit, and Lengshuibeigou Pb-Zn-Ag deposit. Mo-W mineralization at Nannihu occurs in the contact zone between the Nannihu intrusion and the wall rocks, showing typical characteristics of the porphyry-type deposit.
Origin of the Amensif Zn-Cu (Pb-Ag-Au) distal skarn deposit …
The Amensif Zn-Cu (Pb-Ag-Au) ore deposit is located in the northern part of the western High Atlas. The deposit hosts 1 million tons (Mt) of Zn-Cu-Pb metal reserves at 3% Zn, 2% Cu, and 1% Pb. The lenticular sulfide ores are structurally controlled open-space fillings (fractures, faults) in the Lower Cambrian carbonates.
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The genesis of the Tianbaoshan Pb Zn deposit in Sichuan, …
The Sichuan-Yunnan-Guizhou (SYG) Pb Zn metallogenic province is located in the western part of the Yangtze block, which is an important part of the large area of low temperature metallogenic province in southwest China (Hu and Zhou, 2012; Zhou et al., 2018).The total proven Pb + Zn reserve at the SYG Pb Zn metallogenic province reaches approximately 20 …
Genesis of the Zinkgruvan stratiform Zn-Pb-Ag deposit and …
Both ore types are characterized by significant spread in δ 34 S, with the sulfur in the Cu ore and associate marble-hosted Zn mineralization on average being somewhat heavier (δ 34 S = −4.7 to +10.5‰, average 3.9‰) than that in the stratiform Zn-Pb-Ag ore (δ 34 S = −6 to +17‰, average 2.0‰). The ranges in δ 34 S are significantly larger than those observed in …
Sulfidic and non-sulfidic indium mineralization of the epithermal Au–Cu
A polymetallic In-bearing Au–Cu–Zn–Pb mineralization has only recently been discovered at San Roque in the Rio Negro Province and another polymetallic mineralization was studied by Jovic et al. (2011) at Pingüino in the Deseado Massif, Patagonia, of southern Argentina. These recent finds of polymetallic In-bearing deposits in the south-eastern parts of …
Pb-Zn Mineral Processing
Pb-Zn ores divide into sulfide Pb-Zn ore and oxide Pb-Zn ore. The most widely used in separating sulfide Pb-Zn ore is flotation. The sulfide Pb-Zn ore process divides into priority …