Comment on: Baddeleyite U-Pb age and Hf isotopes, and constraints on genesis of the Panzhihua carbonatite in SW China by Wang et al. (2023) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Ore Geology Reviews Année : 2023

Comment on: Baddeleyite U-Pb age and Hf isotopes, and constraints on genesis of the Panzhihua carbonatite in SW China by Wang et al. (2023)

Résumé

Wang et al. (2023) propose that rocks adjacent to the Panzhihua intrusion are not marbles and skarns, but carbonatites. If true, this interpretation could have important implications for models explaining the origin of the large Fe-Ti ore deposits in the intrusion. We reject this interpretation for two principal reasons: 1) the objects described as “mantle xenoliths”, and considered, incorrectly, as diagnostic of carbonatite, are in fact deformed and altered mafic/ultramafic intrusions; 2) the concentrations of incompatible trace elements in the marbles are low and typical of metasedimentary rocks, not carbonatite.
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hal-04069096 , version 1 (19-04-2023)

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Nicholas Arndt, Clément Ganino, Chusi Li. Comment on: Baddeleyite U-Pb age and Hf isotopes, and constraints on genesis of the Panzhihua carbonatite in SW China by Wang et al. (2023). Ore Geology Reviews, 2023, 159, pp.105305. ⟨10.1016/j.oregeorev.2023.105305⟩. ⟨hal-04069096⟩
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