The Lower Changjiang (Yangzi/Yangtze River) metallogenic belt, east central China: intrusion- and wall rock-hosted Cu–Fe–Au, Mo, Zn, Pb, Ag deposits. Author links open ... marine clastic sedimentary rocks and carbonate ... of the Indochina block led to ca. 300 Ma gold-bearing skarn and disseminated gold ore formation in the ...
The Bieluwutu Cu-Pb-Zn deposit is located in the Ondor Sum region of the western Xing'an-Mongolia orogenic belt, North China. The host rocks of the deposit consist of metasandstone, tuffaceous slate, andesitic tuff and fragmented felsic volcanic rocks, which have previously been regarded as the Early Carboniferous Amushan Group.
The Dongshengmiao deposit in the Langshan district is a large Zn-Pb-Cu deposit with reserves of 4.83 Mt Zn at an average grade of 2.85 % Zn, 0.96 Mt Pb at 0.67 % Pb, and 0.11 Mt Cu at 0.86 % Cu (Long, 2009).As the third largest Pb-Zn deposit in China, its genesis has been actively debated since its discovery (Wang et al., 2014).Two main hypotheses currently exist: …
Lead (Pb) and zinc (Zn) are common base metals widely used in modern industrialization. Due to their incompatible geochemical properties, Pb–Zn tends to partition and accumulate in Earth's crust (Gao et al., 1998, Hofmann, 1988).Galena (PbS) and sphalerite (ZnS), two essential Pb–Zn ore minerals, occur in several sediment-hosted and …
The Lappberget deposit is currently the largest sulfide deposit in the mine with a combined mineral resource and ore reserve of 58 Mt at 3.42% Zn, 1.68% Pb, 0.06% Cu, 70 g/t Ag, and 0.41 g/t Au (Högnäs, 2019). It is mined and processed to produce four different concentrates: Zn, Pb, Cu, and a gravimetric concentrate targeted for Au and Ag.
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, including Cu–Pb–Zn (Tongshanling), W–Sn (Weijia), Pb–Zn (Jiangyong), and Mo (Yulong) deposits.
The emergence of CD and MVT deposits in the rock record between 2.02 Ga, the age of the earliest known deposit of these ores, and 1.85 to 1.58 Ga, a major period of CD Pb-Zn mineralization in ...
Keywords: Ir an, m etallog eny of Zn-Pb deposits, massive sulphide, s ub-seafloo r replacement Zn-Pb, s id erit ic Fe - Mn - Pb - Zn deposi t s, barite r eplacement Intro duction
Mining and smelting of Cu and Zn metal ores are important sources of Cu and Zn environmental degradation to soil and water sources [4]. Although Cu and Zn are not a human health concern, their phytotoxic levels can result in soil erosion by wind and water, thereby increasing human exposure to other metal contaminants (Pb and Cd) [5].
The valuable minerals in these ores are native gold (generally low in silver), auriferous pyrite, and auriferous arsenopyrite. Elements that occur frequently in these deposits are Cu, Ag, Mg, Ca, Zn,
0.03 ppm in sedimentary rocks (Boyle, 1987). Silver, then copper, are the elements most frequently associated mineralogically with gold. As, Sb, Bi, Fe, Pb, and Zn are commonly found in gold minerals. Petrovskaya (1973) depicted the tendency of the chemical elements to associate with gold on the periodic table, as shown in Figures 1-1 and 1-2.
Thus, a systematic geochemical and isotopic analysis of the Cu–Pb–Zn ores and the corresponding host rock granites would be a feasible way to reveal the genesis of these deposits. ... The igneous rocks related to Cu–Pb–Zn mineralization are contemporaneous Jurassic granodiorite porphyries and granite/quartz porphyries (170–155 Ma ...
Request PDF | On May 1, 2021, N. V. Berdnikov and others published Silicate, Fe-Oxide, and Au–Cu–Ag Microspherules in Ores and Pyroclastic Rocks of the Kostenga Iron Deposit, in the Far East ...
to the rock folding and in some places follow dislocation alignments. The dip is ... of gold ores in metamorphic rocks, as shown thoroughly by Mârza (1999). Nevertheless, some corrections should be made: not all the authors mentioned ... microdiorites cut both the stratabound Pb-Zn-Cu ores, and the host rocks. The contact effects are stronger ...
Affiliations 1 Institute of Geochemistry, Mineralogy and Mineral Resources, Faculty of Science, Charles University, Albertov 6, 128 43, Prague 2, Czech Republic. [email protected].; 2 Institute of Geochemistry, Mineralogy and Mineral Resources, Faculty of Science, Charles University, Albertov 6, 128 43, Prague 2, Czech Republic.; 3 …
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.
From the surface down to the ca. 1500 m level (Fig. 7, Fig. 8, Fig. 9) the pipe-like orebody is characterized by: (1) predominantly Cu-rich ores in shales and carbonates of the Katete Formation in the northern part of the deposit; (2) Zn–Cu-rich ores in carbonates of the Kipushi Formation; (3) Zn-rich ores at the base of the Kipushi Formation ...
The major metals in the hydrothermal system of the Dongwan gold deposit are Au, Ag, Pb, Zn and Cu. Gold exhibits multiple spikes and chaotic denudation signals for Py1-1, …
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 …
Two granodiorite samples yield mean ages of 245 ± 2 to 243 ± 2 Ma and a diorite has a mean age of 245 ± 2 Ma. A phlogopite sample, which is associated with Cu–Pb–Zn mineralization, has been chosen to precisely date the formation of Cu–Pb–Zn ores by Ar–Ar method and yields a well–defined plateau age of 240.4 ± 1.2 Ma.
microdiorites cut both the stratabound Pb-Zn-Cu ores, and the host rocks. The contact effects are stronger in ores, producing homogenization of exsolved phases and slight optical changes of …
Sedimentary basins are highly prospective for a wide variety of base metals and other critical raw materials (Hoggard et al., 2020, Skirrow et al., 2013), and improved mineral exploration targeting in these settings could mitigate future supply chain vulnerabilities.Recently, sediment–hosted Mississippi Valley–type (MVT) and clastic–dominated (CD) deposit types …
The objectives of the present study were (i) to expand the range of Cu, Zn, and Pb isotope compositions of mineral dust by analyzing samples from major mineral dust sources in …
The Weibao Cu–Pb–Zn deposit, initially discovered through geochemical reconnaissance survey by the Geophysical and Geochemical Party, Xinjiang Bureau of Geology and Mineral Resource Exploration and Development (GGPXBGMRXD) in 2003, is located at the boundary of Xinjiang and Qinghai, China (37°07′58″ N, 91°07′08″ E, Fig. 1 b), and now has …
Ore microscopy revealed the presence of gold mineralization in close association with sulphide ores that are disseminated within mylonitized rocks along the shear zones.
Zn and Pb smelters are the major contributors to Zn and Pb emissions among all anthropogenic sources, thus, it is essential to understand Zn isotopic variations within the context of metallurgical industries, as well as its fractionation in different environments impacted by smelting activities.This mini review outlines the current state of knowledge on Zn isotopic …
Numerous studies have shown that the formation of skarn Cu-Mo-Pb-Zn mineralization is controlled predominantly by the occurrence of igneous rocks, as the ore-bearing fluids have highly variable ...
This mini review outlines the current state of knowledge on Zn isotopic fractionation during the high-temperature roasting process in Zn and Pb refineries; δ66Zn values variations in air ...
These ore minerals also exhibit positive correlation between As and Au, Sb, Cu, Zn, and Pb (Fig. 7 a and 8b, c, h), suggests that the progressive As increase has probably …
Common associations are Cu, Cu–Zn, Cu–Pb–Zn, and Pb–Zn. Metals are normally combined with sulfur in sulfide minerals, so that a base metal deposit is not only polyelemental, it is polymineralic as well. The more common base-metal sulfide minerals are: • chalcopyrite (34.5% Cu) • bornite (63.3% Cu) • sphalerite (67% Zn) • galena ...
The lower valley of Changjiang (i.e., the Yangzi, Yangtze or Yangtse River) contains more than 200 polymetallic (Cu–Fe–Au, Mo, Zn, Pb, Ag) deposits and is one of the economically most important metallogenic belts in China (Fig. 1).These polymetallic deposits, sharing many geological and geochemical similarities, are collectively referred to as the …