The Cu, Zn, Pb, and Cd concentrations in the old fruit were close to the value or higher than that of the young fruit of the same cultivar (except the Cd concentration of "Riben ingjiao" in the heavily contaminated soil). Especially for the cultivar "Didou king," heavy metal concentrations in the old fruit were significantly higher ...
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The elements of P, Cd, Cu, Pb, Se and Zn were further investigated. Cu, Cd, Pb and Zn are frequently studied metals (Goodyear and McNeill 1999), as elevated levels might be toxic to organisms. Zn and Cu are essential trace metals; whereas, Cd and Pb are in general considered non-essential (e.g. Rainbow 2002; Hejna et al. 2018). P is an ...
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The Kalatag area, located in the middle of the Harlik–Dananhu arc in East Tianshan orogen, hosts several Cu–Zn deposits, including the Huangtupo VMS Cu–Zn deposit (including the Honghai deposit) and the Hongshan, Hongshi, and Meiling hydrothermal lode-type Cu deposits (Figs. 1 C and 2; Fang et al., 2002, Mao et al., 2010, …
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The Cu, Zn, Pb and Cr of 23 urban and non-urban topsoils (A horizon soils) were sequentially extracted into 5 fractions according to the method of Tessier [Anal. Chem. 51 (1979) 844]. Total Cu, Zn ...
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The Nayongzhi Zn-Pb deposit, located in the southeastern margin of the Sichuan-Yunnan-Guizhou (S-Y-G) Zn-Pb metallogenic province, China, has been recently discovered in this region and has an estimated resource of 1.52 Mt of metal at average grades of 4.82 wt % Zn and 0.57 wt % Pb. The ore bodies are hosted in the Lower …
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China is endowed with mineral resources due to its prolonged and dynamic geological evolutionary history. Marine carbonate-hosted Pb-Zn deposits are mostly concentrated in the southern part of China, represented by the world-class metallogenic belt in the Sichuan-Yunnan-Guizhou ("SYG") triangle in the Yangtze Block, and those Pb-Zn …
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The tissues differed widely in their ability to accumulate heavy metals in every season (e.g., in spring, root concentrate 12.91 mg·kg −1 Cu, 26.13 mg·kg −1 Zn, 4.22 mg·kg −1 Pb, and 149.58 mg·kg −1 Cr). This conclusion easily explained that Cu, Zn, Pb, and Cr are essential micronutrients for the different tissues.
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Chang et al. [18] have reviewed the experimental studies on the Cu–Pb–Zn system. Table 1 shows the type of the experimental information selected in the present optimization. The data are the same as adopted in the earlier Cu–Pb–Zn description of [10].The only exception is the inclusion of the data of [23] not adopted by [10].The biggest …
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About 150 soil samples from 20 urban and 3 non-urban soil profiles in Nanjing were analyzed for total concentrations of Cu, Zn, Pb and Cr using ICP spectrometry. The Cu, Zn, Pb and Cr of 23 urban and non-urban topsoils (A horizon soils) were sequentially extracted into 5 fractions according to the method of Tessier [Anal. Chem. 51 (1979) 844].
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منظر جميل للذهب الخالص اكتشاف مذهل Beautiful view of pure gold, amazing find. البحث عن الكنز - looking for the treasure · Original audio
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The concentrations of Cu, Zn, and Pb in soil solutions were measured after different incubation times within 30 days. Speciation of metals in soil solution was
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V was mainly present as V(V) associated with iron-oxides or in the form of volborthite [Cu 3 (OH) 2 V 2 O 7 ·2H 2 O]. Pb was speciated as minium (Pb 3 O 4), lanarkite [Pb 2 O(SO 4)], and, in association with Cr(VI), as crocoite (PbCrO 4). In general, despite a high total concentration, metals appear to be speciated for the most part as rather ...
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The exposed strata in Aerhada comprise the Upper Devonian Angeryinwula Formation, the Upper Jurassic Manketouebo Formation, the Lower Cretaceous Baiyingaolao Formation, and the Quaternary sediments (Fig. 2 a).The Angeryinwula Formation, with a thickness of 267–––2781 m, crops out in most of the deposit and is the main host rock for …
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Cu – Au – Pb – Zn – Ag metallogeny of the Alpine – Balkan – Carpathian – Dinaride geodynamic province. Introduction; Published: 13 April 2002; Volume 37, pages 533–540, (2002) Cite this article
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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. Although some geological and geochemical characteristics of primary seafloor sedimentary mineralization are preserved, major fault-controlled Pb-Zn …
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The Baoshan Cu Pb Zn skarn deposit is located in southern Hunan province at about 30 km west of the Chenzhou city in the western Nanling Range, west of the Chenzhou–Linwu fault (Fig. 1 c). It is a skarn-hydrothermal type Cu-polymetallic deposit with metal reserves of 238,700 t at an average grade of 1.28 % Cu, 470,700 t at an average …
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Carbonate-hosted Pb–Zn deposits are abundant in China (Fig. 1 b), which are primary sources of Pb and Zn, and significant sources of Ag and Ge (Huang et al., 2004, Wang et al., 2014, Zhang et al., 2015a).Such type of Pb–Zn deposits mainly occurs in South China and are commonly distributed in clusters (Fig. 1 b).For example, in the western …
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The Yinshan Cu–Au–Pb–Zn–Ag deposit is located in the famous Dexing copper–gold polymetallic district in South China (Fig. 1).This polymetallic district consists of the Middle Jurassic (ca. 170 Ma) Yinshan Cu–Au–Pb–Zn–Ag deposit (950,000 tons of Cu and 107 tons of Au) (JGEB, 1996, Yinshan Lead-Zinc Mine, 1993, Wang et al., 2011b), …
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The reduction pattern of Pb > Zn >Cu > Cd >As was reported in sesame seed. Although the oil refining had been greatly reduced the Pb of oil sample, but it had yet been much higher than the ...
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The metal types and concentrations contributed to the mineralogy of various calcium carbonates precipitated and differences in metal removal rates. Pb and Sr showed more than 99% removal efficiency, whereas Cu, Zn, and Cd showed a low removal efficiency of 30∼60% at a low concentration of 0.05 mM or less.
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Lead-zinc (Pb-Zn) mineralization of the western Hunan-eastern Guizhou (WHEG) metallogenic belt is hosted in the platform carbonate sequences in southeastern Yangtze Block (Fig. 1, Fig. 2; Yang and Lao, 2007).The WHEG metallogenic belt contains about 300 Pb-Zn deposits with over 20.0 million tonnes (Mt) of Pb and Zn reserve (Zhao …
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The metals Fe, Ni, Cu, Zn, Cd, and Pb were sampled in the Yellow Sea and East China Sea at 69 surface locations using a towfish and with 8 depth profiles, along with auxiliary parameters including salinity, phosphate, and apparent oxygen utilization. We find that Ni, Cu and Cd are most strongly impacted by a combination of biological cycling ...
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The world-class Huize deposit hosts significant germanium (Ge) resources in the Sichuan–Yunan–Guizhou (SYG) Mississippi Valley-type (MVT) Pb–Zn province of China. The distribution and enrichment mechanism of Ge is still poorly understood. In the main ore-forming stage of Huize, we identified six sphalerite colors from C1 (black) to C6 …
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The Pb-Zn deposits in the NW Guizhou are mainly medium to small in size (≤0.5 Mt), with similar mineralization stages: (1) the early stage is dominated by pyrite; (2) the middle stage is the main mineralization stage where large amounts of Pb-Zn sulfides precipitated; (3) carbonate minerals dominate the last stage (Yang et al., 2022).
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The Huogeqi Cu-Pb-Zn: A case of orogenic-type base metal deposit. Studies in the past ten years have shown that the Huogeqi Cu-Pb-Zn deposit share broad …
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material Cu Pb Fe Ni Sn Al Zn Other min 57 2.5 0 0 0 0 Rem. 0 max 59 3.5 0.3 0.2 0.3 0.05 Rem. 0.2 CW614N CuZn39Pb3. International CuZn39Pb3. BS CZ121. UNS C38500. EN …
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1. Introduction. Globally, epithermal deposits host significant amounts of Cu, Pb, and Zn as well as other economically important elements such as In and Te (Hedenquist et al., 2000; Sillitoe and Hedenquist, 2003).These metals commonly occur in sulfides, mainly as chalcopyrite (CuFeS 2), galena (PbS), and sphalerite (ZnS); however, pyrite (FeS 2) …
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The occurrence of small, but high-grade Ge-rich Cu–Zn–Pb–Ag deposits in the lower Tsumeb Subgroup has important consequences on the mineral potential of the area, because prospecting for Cu-rich ores has been traditionally performed in the uppermost Tsumeb Subgroup only, in relation to paleokarst structures. D 2005 Elsevier B.V. All ...
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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 ...
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Abstract: The Pusangguo deposit (1.42 Mt @ 1.42% Cu, 0.14 Mt @ 1.82% Zn, 0.08 Mt @ 1.01% Pb, and 285.8 t Co @ 140 g/t Co) is the first Co-rich Cu-Zn-Pb skarn deposit discovered in the Gangdese metallogenic belt. However, the trace and minor element geochemistry of the sulfides in this deposit
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The Pusangguo deposit (1.42 Mt @ 1.42% Cu, 0.14 Mt @ 1.82% Zn, 0.08 Mt @ 1.01% Pb, and 285.8 t Co @ 140 g/t Co) is the first Co-rich Cu-Zn-Pb skarn deposit discovered in the Gangdese metallogenic belt. However, the trace and minor element geochemistry of the sulfides in this deposit has not been studied, limiting further …
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