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6 Rocks That Contain Gold (How To Tell if a Rock Has Gold …
Quartz is classically aligned with gold.The majority of hard rock deposits found appear to occur in quartz, and gold-in-quartz has even taken on a life of its own. The gold that appears in quartz is almost universally native, meaning that it's in a metallic form contained in the crystalline quartz. It's universally considered the richest of the gold …
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Ore genesis and tectonic setting of the Bieluwutu Cu-Pb-Zn …
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.
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Zn and Pb mobility during metamorphism of sedimentary rocks …
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 ...
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Using apatite to differentiate metallogenic potential and …
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 ...
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CU, AU, AND ZN-PB SKARN DEPOSITS (MODELS …
CU, AU, AND ZN-PB SKARN DEPOSITS (MODELS 18b,c; Cox and Theodore, 1986; Cox, 1986; Theodore and others, 1991) ... gold deposit, gold-bearing rock is entirely in calcsilicate-bearing hornfels in clastic, quartz-rich host rocks. This deposit is atypical of skarns and may represent a distinct, but related type of disseminated gold deposit in ...
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Genesis of Pb–Zn Mineralization in the Pulang Cu …
The Pulang super-large porphyry Cu polymetallic deposit, located in the Sanjiang area of Yunnan Province, is one of the largest Cu deposits in China. This deposit hosts Cu resources of ~5 × 106 t and other ore-forming elements, such as Mo, Au, Ag, Pb, Zn, Pt and Pd. Recently, obvious hydrothermal vein-type Pb–Zn mineralization, with a …
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Sediment-hosted lead-zinc deposits: A global perspective
The deposits display a broad range of relationships to enclosing host rocks that includes stratiform, strata-bound, and discordant ores. These ores are divided into …
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Petrogenetic and Metallogenetic Background of the Dajing Cu–Sn–Ag–Pb–Zn …
The Dajing Cu–Sn–Ag–Pb–Zn ore deposit, Inner Mongolia of China, is a fissure-filling hydrothermal ore deposit that occurs within the Upper Permian Linxi group.
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Mineralogy, fluid inclusion and stable isotope study of the …
Jinchanghe is a Zn-Pb-Fe-Cu skarn deposit in the northern Baoshan block, southwestern China. It is a typical distal skarn deposit with orebodies in the Cambrian Hetaoping Formation limestone and calcareous siltstone. The skarn minerals display a vertical zonation with garnet skarn in the lower part and pyroxene skarn in the upper …
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Minerals of the Pb–As–Sb–S and Cu–Pb–As–Sb–S …
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 (Minerals, 1960; Ramdohr, 1962; Chvileva, 1976; Handbook, 1988). The described minerals are much
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(PDF) Genesis of Pb-Zn-Cu-Ag Deposits within Permian …
(05SH15A) shows a trace of gold mineralization. Pb Isotope IJ It is quartz veins within the metamorphic rocks. Pb isotop of ore, vein, and altered rocks from From the data, it seems that there is a good the Latong River area were analyzed by using correlation between Pb, Zn, and Ag. The ore ICP-MS technique.
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The Lower Changjiang (Yangzi/Yangtze River
Additionally, the Pb isotopic compositions of galena in the two mineralization stages exhibit a concentrated range (206 Pb/ 204 Pb = 18.2806 – 18.4190, 207 Pb/ 204 Pb = 15.6262 – 15.6484, and 208 Pb/ 204 Pb = 38.5710 – 38.6529) and all the Pb isotopic data points of the Hehuashan deposit are plotted in the right-hand side of the geochron ...
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(PDF) Cu – Au – Pb – Zn – Ag metallogeny of the Alpine – …
The formation of Pb-Zn-Ag (Au-Cu) deposits in the study area and elsewhere in the Serbomacedonian-Rhodope district is genetically related to Tertiary magmatic activity (e.g. Heinrich and Neu ...
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(PDF) Ore Genesis and Geodynamic Setting of Laochang Ag-Pb-Zn-Cu
Moreover, the Carboniferous volcanic rock hosting the stratabound Ag-Pb-Zn-Cu ores has a zircon U-Pb age of 312 ± 4 Ma; together with previous geochronological and geological evidences, thus, we ...
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Petrogenesis and Tectonic Setting of Ore-Associated Intrusive Rocks …
The Baiyinnuoer skarn Zn–Pb deposit, located in the Southern Great Xing'an Range, Northeast China, is the largest Zn–Pb deposit of the northern China, with a total reserve of 32.74 Mt at average grades of 5.44% Zn and 2.02% Pb. The Zn–Pb ore bodies are hosted in the Lower Permian Huanggangliang Formation. The results of zircon U–Pb …
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Trace element geochemistry and petrogenesis of felsic volcanic rocks
Volcanogenic massive Cu-Zn-(Pb) sulfide (VMS) deposits occur primarily in subaqueous rift-related environments (e.g., oceanic, fore-arc, arc, back-arc, continental margin, or continental), are ...
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Re–Os and U–Pb geochronology of the Laochang Pb–Zn
Numerous polymetallic volcanogenic massive sulfide (VMS), vein, and replacement deposits are distributed along the Changning–Menglian suture zone in Sanjiang Tethyan metallogenic province, SW China. Laochang is the largest Pb–Zn–Ag vein and replacement deposit in this area, with a proven reserve of 0.51 Mt Pb, 0.34 Mt …
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The Paleoproterozoic Aripuanã Zn-Pb-Ag (Au, Cu) …
Aripuanã is a Paleoproterozoic (1.76-1.75 Ga), stratiform, volcanogenic Zn-Pb-Ag-(Au-Cu) massive sulfide deposit, has an estimated resource of 11.6 million metric tons (Mt) of ore, and is located on the south-southwest …
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Cordilleran Epithermal Cu-Zn-Pb-(Au-Ag) Mineralization in …
This corridor is zoned from Cu- (Au) ores in its inner parts (Smelter deposit) to peripheral Zn-Pb- (Ag) ores (Colquijirca deposit). The Smelter-Colquijirca corridor has …
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New Mapping of the World-Class Jinding Zn-Pb Deposit, …
The Jinding deposit demonstrates that MVT Zn-Pb mineralization can be hosted by a variety of evaporite diapir-related rocks and indicates that dome structures and the presence of pre-ore hydrocarbons are both important for the formation of …
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How carbonate dissolution facilitates sediment-hosted Zn-Pb …
Solutions of Zn 2+ + Mg 2+ + Ca 2+ + NaCl reacted with S and calcite (sample R11-1) to produce sphalerite and anhydrite as well as Mg-calcite crystals with partial dissolution of the calcite. The Mg-calcite and sphalerite crystals grew in a shell around the dissolving calcite crystal (Figs. 1D and 1E).Sphalerite clusters and galena …
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Insights into ore genesis of the Beishan Pb–Zn deposit in …
The Beishan Pb–Zn deposit is located 47 km northwest of Huanjiang County, north of Hechi City, Guangxi (Fig. 1 a, b), and includes several mineralized occurrences developed in mining areas, such as Shangchao, Huada, and Caixiu.The Beishan Pb–Zn deposit has a history of discovering native siderite when searching for Fe mineralization …
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Frontiers | Ore genesis of the Chazangcuo Cu-Pb-Zn deposit …
Some ore-bearing hydrothermal fluids continue to migrate along the fault to the farther end, forming Pb-Zn mineralization in the contact zone between sub-volcanic …
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Cordilleran Epithermal Cu-Zn-Pb-(Au-Ag) Mineralization in …
This corridor is zoned from Cu-(Au) ores in its inner parts (Smelter deposit) to peripheral Zn-Pb-(Ag) ores (Colquijirca deposit). The Smelter-Colquijirca corridor has undergone minor erosion, providing a good example of a nearly intact paleo-epithermal system of the Cordilleran class.
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Ore Geology Reviews
Three distinct occurrences of Zn–Cu–Pb mineralization (Um Samiuki, Hilgit, and Maaqal) in Neoproterozoic island arcs of the Shadli Metavolcanics Belt, South …
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New Mapping of the World-Class Jinding Zn-Pb Deposit, …
Jinding is the third-largest known Mississippi Valley-type (MVT) Zn-Pb deposit. It is hosted by a dome containing a suite of complex breccias and sandstones with abundant gypsum and anhydrite.
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(PDF) The Bou Madine Polymetallic Ore Deposit, Eastern Anti …
The Bou Madine Au–Ag–Pb–Zn ± Cu epithermal deposit in the Ougnat Pan-African inlier of the eastern Anti-Atlas occurs within the lower unit of the late Neoproterozoic Tamerzaga-Timrachine ...
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Syndeposition and epigenetic modification of the strata-bound Pb–Zn–Cu
Lead–zinc–copper (Pb–Zn–Cu) deposits in the western Kunlun Orogen of China are mostly distributed along the Keziletao–Kusilafu fault zones in the Palaeozoic clastic–carbonate rocks ...
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A Global Assessment of Copper, Zinc, and Lead Isotopes in …
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 …
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Middle Triassic Cu–Pb–Zn Skarn mineralization in the Wulonggou gold ore
The Wulonggou gold ore field, located in the eastern segment of the EKLO, is an important gold producing area in SW China. It is characterized by the large-sized Yanjingou and Hongqigou-Shenshuitan Au deposits (Chen et al., 2019, Zhang et al., 2017).These Au deposits are in lodes and have formed during 238–220 Ma (Li et al., …
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