Geochemistry of lamprophyres at the Daping gold deposit, Yunnan Province, China: Constraints on the timing of gold mineralization and evidence for mantle convection in the eastern Tibetan Plateau

Chen, Yaohuang; Yao, Shuzhen; Pan, Yuanming

doi:10.1016/j.jseaes.2014.07.033

Cited by 34 publications

(29 citation statements)

References 63 publications

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“…The primitive mantle-normalized (PM-normalized) multi-element patterns and chondrite-normalized rare earth element (REE) patterns of the Chompolo rocks are plotted in Figure 9a,b along with group I kimberlites [87], Leucite Hills lamproites [88] and Central Aldan lamproites [11]. The analogous element patterns for lamprophyres and minettes from Canada, USA and China [89][90][91][92][93] are plotted in separate figures (Figure 9c,d). [94], and chondrite-normalized rare earth element (REE) patterns [95] in Chompolo rocks (solid black line) (b,d).…”

Section: Trace Elementsmentioning

confidence: 99%

“…[94], and chondrite-normalized rare earth element (REE) patterns [95] in Chompolo rocks (solid black line) (b,d). (a) Chompolo rocks together with lamproites from Leucite Hills (black dash line), according to [88]; group I kimberlites (blue field), according to [87]; Aldan lamproites (red field), according to [11]; (b) lamproites from Leucite Hills (black dash line), according to [88]; group I kimberlites (blue field), according to [87]; Aldan lamproites (red field), according to [11]; (c) representative CA and shoshonitic lamprophyre patterns from Canada, USA and China compared with the range of Chompolo alkaline rocks (shaded field) (data sources: [89][90][91][92][93]); (d) CA lamprophyres from Taihang Mountains, north China (blue dash line), according to [90]; generation I (black dotted line) and generation II (red dotted line) minettes from Yunnan Province, China [89]; CA and shoshonitic lamprophyre patterns from Canada [91,92].…”

Section: Trace Elementsmentioning

confidence: 99%

“…In addition, the low TiO 2 and relatively lower Ba, Sr, Zr, and La contents of the rocks are not typical for lamproites [105]. In fact, the PM-normalized trace elements pattern and chondrite-normalized REE of Chompolo rocks are similar to those of the Central Aldan lamproites and Chinese lamprophyre and minettes [89,90]. However, the rocks should not be defined solely by their whole-rock chemistry and, in this respect, chemistry in combination with mineral composition features establishes more reliable criteria to properly identify the affinity of the Chompolo rocks.…”

Section: Rock Classification Based On Mineralogical Features and Wholmentioning

confidence: 99%

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40Ar/39Ar Geochronology and New Mineralogical and Geochemical Data from Lamprophyres of Chompolo Field (South Yakutia, Russia)

et al. 2020

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The alkaline igneous rocks of the Chompolo field (Aldan shield, Siberian craton), previously defined as kimberlites or lamproites, are more correctly classified as low-Ti lamprophyres. The emplacement age of the Ogonek pipe (137.8 ± 1.2 Ma) and the Aldanskaya dike (157.0 ± 1.6 Ma) was obtained using 40Ar/39Ar K-richterite dating. The Chompolo rocks contain abundant xenocrysts of mantle minerals (chromium-rich pyropic garnets, Cr-diopsides, spinels, etc.). The composition of the mantle xenocrysts indicates the predominance of spinel and garnet–spinel lherzolites, while the presence of garnet lherzolites, dunites, harzburgites, and eclogites is minor. The Chompolo rocks are characterized by large-ion lithophile element (LILE) and Light Rare Earth Element (LREE) enrichments, and high field strength element (HFSE) depletions. The rocks of the Ogonek pipe have radiogenic Sr (87Sr/86Sr (t) = 0.70775 and 0.70954), and highly unradiogenic εNd(t) (−20.03 and −20.44) isotopic composition. The trace element and isotopic characteristics of the Chompolo rocks are indicative of the involvement of subducted materials in their ancient enriched lithospheric mantle source. The Chompolo rocks were formed at the stage when the Mesozoic igneous activity was triggered by global tectonic events. The Chompolo field of alkaline magmatism is one of the few available geological objects, which provides the opportunity to investigate the subcontinental lithospheric mantle beneath the south part of the Siberian craton.

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Section: Trace Elementsmentioning

confidence: 99%

Section: Trace Elementsmentioning

confidence: 99%

Section: Rock Classification Based On Mineralogical Features and Wholmentioning

confidence: 99%

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40Ar/39Ar Geochronology and New Mineralogical and Geochemical Data from Lamprophyres of Chompolo Field (South Yakutia, Russia)

et al. 2020

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“…These potassic magmatisms triggered the formation of many porphyry ore deposits, for example, Beiya Au‐Cu deposit and Habo Cu deposit (Hou et al, ). The Cenozoic lamprophyres with a phlogopite Ar‐Ar age of 29.6–36.8 Ma were considered to have intimately temporal and spatial relationships with hydrothermal gold deposits in the Ailaoshan gold belt (Chen et al, ).…”

Section: Regional Geologymentioning

confidence: 99%

Two‐Stage Sulfide Mineral Assemblages in the Mineralized Ultramafic Rocks of the Laowangzhai Gold Deposit (Yunnan, SW China): Implications for Metallogenic Evolution

et al. 2019

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The Laowangzhai gold deposit, located in the Ailaoshan gold belt (SW China), is hosted in various types of rocks, including in quartz porphyry, carbonaceous slate, meta‐sandstone, lamprophyre, and altered ultramafic rocks. In contrast to other wall rocks, the orebodies in altered ultramafic rocks are characterized by the occurrence of a large amount of Ni‐bearing minerals. The ore‐forming process of the orebodies hosted by altered ultramafic rocks can be divided into two stages: pyrite‐vaesite‐native gold and gersdorffite‐violarite stages. The contents of As and Sb increased during the evolution of ore‐forming fluid based on the mineral assemblages. Thermodynamic modeling of the Ni‐Cu‐As‐Fe‐S system using the SUPCRT92 software package with the updated database of slop16.dat indicates the fS2 in ore‐forming fluid decreases significantly from stage I to stage II. The decreases of fS2 due to crystallization of sulfides and fO2 due to fluid–rock reaction were responsible for ore formation in altered ultramafic rocks of the Laowangzhai gold deposit. Geological evidence, the in situ sulfur isotope values of pyrite, and the other published isotopic data suggest that the ore‐forming fluid for ultramafic rock ores was dominantly composed of evolved magmatic fluid with the important input of sediments.

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“…More recently, the association between lamprophyres and orogenic gold deposits has also been documented in the Yunnan Province, China (e.g. Wang et al 2001;Chen et al 2014;Lu et al 2013bLu et al , 2015. Additionally, Štemprok et al (2014) note their association with hydrothermal Sn-W mineralization in the Erzgebirge, East Germany.…”

Section: Introductionmentioning

confidence: 95%

Indirect Associations Between Lamprophyres and Gold-Copper Deposits

Müller

Groves

2015

Potassic Igneous Rocks and Associated Gold-Copper Mineralization

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Geochemistry of lamprophyres at the Daping gold deposit, Yunnan Province, China: Constraints on the timing of gold mineralization and evidence for mantle convection in the eastern Tibetan Plateau

Cited by 34 publications

References 63 publications

40Ar/39Ar Geochronology and New Mineralogical and Geochemical Data from Lamprophyres of Chompolo Field (South Yakutia, Russia)

40Ar/39Ar Geochronology and New Mineralogical and Geochemical Data from Lamprophyres of Chompolo Field (South Yakutia, Russia)

Two‐Stage Sulfide Mineral Assemblages in the Mineralized Ultramafic Rocks of the Laowangzhai Gold Deposit (Yunnan, SW China): Implications for Metallogenic Evolution

Indirect Associations Between Lamprophyres and Gold-Copper Deposits

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