Linking uplift and mineralisation at the Mount Novit Zn-Pb-Ag Deposit, Northern Australia: Evidence from geology, U–Pb geochronology and sphalerite geochemistry

Cave, Bradley; Perkins, W. G.; Lilly, Richard

doi:10.1016/j.gsf.2021.101347

Cited by 10 publications

(4 citation statements)

References 58 publications

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“…Yet, a sedimentary/diagenetic origin can definitely be excluded based on the mineral, thermobarometry, and geochronology datasets. Such epigenetic models at relatively similar thermobarometric conditions are coherent with some recent reappreciations of other worldwide Pb-Zn(-Ag-Cu-Fe) deposits from Australian and Chinese belts [14,18].…”

Section: An Alpine Pb-ag Mineralizationsupporting

confidence: 80%

“…They are located in the same litho-structural context in Permo-Triassic phyllitic quartzite of the External Briançonnais domain of the Internal Alps. In the absence of ages or mineralizing conditions (P, T, speciation), metallogenic models are still debated because of the stratiform or vein-like type mineralizations that could either result from sedimentary or orogenic processes [3][4][5][6][7][8]13], as for other worldwide Pb-Zn(-Ag-Cu) deposits in several mountain belts (e.g., Pyrenees, Mount Isa region, and North China craton) mainly considered initially as sedimentary but revealed in fact to be orogen-driven [14][15][16][17][18]. This study proposes for the first time a multitechnique investigation on these two deposits, coupling field observations, microstructure and mineral paragenesis identification, and thermobarometry and geochronology.…”

Section: Introductionmentioning

confidence: 99%

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A New Alpine Metallogenic Model for the Pb-Ag Orogenic Deposits of Macôt-la Plagne and Peisey-Nancroix (Western Alps, France)

et al. 2022

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Understanding mass transfer associated with fluids circultion and deformation in the Alpine orogeny is often complex due to common multistage crystallization. For example, in two emblematic and historic Pb-Ag deposits of the French Alps, Macôt-la Plagne (MP) and Peisey-Nancroix (PN), a sedimentary or orogenic origin is still debated. To discriminate between the metallogenic models of the two deposits, an integrative methodology combining field, microstructural, mineralogical, thermobarometrical, and geochronological data was here applied for establishing detailed Pressure–Temperature–Time–Deformation (P-T-t-d) mineralization conditions. Both deposits are located in Permo-Triassic quartzite of the External Briançonnais domain along the Internal Briançonnais Front (Internal Western Alps). The ore mainly occurs as veins and disseminated textures containing galena, pyrite, and variable content of tetrahedrite–tennantite and chalcopyrite. Quartz porphyroclasts and sulfide microstructures indicate a dynamic recrystallization of the quartzite during the main fluid mineralization episode. Chlorites and K-white micas (phengite) chemical analysis and thermodynamic modeling from compositional maps indicate an onset of the mineralization at 280 °C, with a main precipitation stage at 315 ± 35 °C and 6.25 ± 0.75 kbar. In situ U-Pb dating on monazite, cogenetic with sulfides, gives ages around 35 Ma for both deposits. The integrative dataset converges for a cogenetic MP-PN Alpine Pb-Ag mineralization during deformation in relation to the thrusting of the “Nappe des Gypses” and the Internal Briançonnais at the metamorphic peak.

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Section: An Alpine Pb-ag Mineralizationsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

A New Alpine Metallogenic Model for the Pb-Ag Orogenic Deposits of Macôt-la Plagne and Peisey-Nancroix (Western Alps, France)

et al. 2022

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“…In these ternary plots, the Nanmushu sphalerite also falls into the MVT field, which is clearly different from the SEDEX, VMS, and Skarn deposits. [5,13,14,[65][66][67][68][69][70][71]; MVT data are collected from references [3,5,18,30,[41][42][43]50,66,[72][73][74]; SEDEX data are collected from references [75][76][77][78][79]; Skarn data are collected from references [3,5,13,14,67,[80][81][82]; and VMS data are collected from references [3,5,66,83,84].…”

Section: Genesis Of Ore Depositmentioning

confidence: 99%

LA-ICP-MS Trace Element Geochemistry of Sphalerite and Metallogenic Constraints: A Case Study from Nanmushu Zn–Pb Deposit in the Mayuan District, Shaanxi Province, China

Hui-xin

Cheng

et al. 2023

Minerals

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The Nanmushu Zn–Pb deposit is a large-scale and representative deposit in the Mayuan ore field on the northern margin of the Yangtze Block. This study investigates the trace element geochemistry of sphalerite from this deposit using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The results show that the main trace elements in sphalerite include various trace elements, such as Mn, Fe, Cu, Ga, Ge, Ag, Cd, Pb, Co, Hg, Tl, In, Sn, and Sb. Among them, Ag, Ge, Cd, and Cu are valuable components that may be recovered during mineral processing or smelting techniques. The histograms, LA-ICP-MS time-resolved depth profiles, and linear scan profiles indicated that most trace elements occur in sphalerite as isomorphs, while partial Pb, Fe, and Ag occur as tiny mineral inclusions. The correlation diagrams of trace elements revealed that Fe2+, Mn2+, Pb2+, and Tl3+ can substitute Zn2+ in sphalerite through isomorphism. In sphalerite, Cd2+ and Hg2+ together or Mn2+, Pb2+, and Tl3+ together can replace Zn2+, i.e., ((3Mn, 3Pb, 2Tl)6+, 3(Cd, Hg)2+) ↔ 3Zn2+. Moreover, there is a mechanism of Ge4+ with Cu+ or Ga3+ with Cu+ replacing Zn2+ in the Nanmushu deposit, i.e., Ge4+ + 2Cu+↔ 3Zn2+ or 2Ga3+ + 2Cu+↔ 4Zn2+. Furthermore, the trace element compositions indicate that the Nanmushu Zn mineralization occurred under low-temperature conditions (<200 °C) and should be classified as a Mississippi Valley-type (MVT) deposit. This study provides new insights into the occurrence and substitution mechanisms of trace elements in sphalerite and the metallogenic constraints of the Nanmushu deposit.

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“…This orogeny is envisaged to have occurred as a consequence of collision between Paleoproterozoic Australia (then consisting of the North Australia Craton and the South Australian Craton with the North China Craton and a large piece of East Antarctica) and Laurentia (Pourteau et al, 2018), and is recorded by the Racklan Orogeny in NW Laurentia (Furlanetto et al, 2013). Orogenic activity coeval with younger Picuris Orogeny are found in the Gawler Craton of Australia (Hall et al, 2018;Morrissey et al, 2019), and in the Mount Isa region of NE Australia (Cave et al, 2022).…”

Section: Paleo-to Mesoproterozoic Orogensmentioning

confidence: 99%

New Maps of Global Geological Provinces and Tectonic Plates

Hasterok

Halpin

Collins

et al. 2022

Earth-Science Reviews

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Linking uplift and mineralisation at the Mount Novit Zn-Pb-Ag Deposit, Northern Australia: Evidence from geology, U–Pb geochronology and sphalerite geochemistry

Cited by 10 publications

References 58 publications

A New Alpine Metallogenic Model for the Pb-Ag Orogenic Deposits of Macôt-la Plagne and Peisey-Nancroix (Western Alps, France)

A New Alpine Metallogenic Model for the Pb-Ag Orogenic Deposits of Macôt-la Plagne and Peisey-Nancroix (Western Alps, France)

LA-ICP-MS Trace Element Geochemistry of Sphalerite and Metallogenic Constraints: A Case Study from Nanmushu Zn–Pb Deposit in the Mayuan District, Shaanxi Province, China

New Maps of Global Geological Provinces and Tectonic Plates

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