... North Carolina USA This is the ninth in a series of papers describing the new minerals recently discovered at the Redmond mine, a very small and long-inactive lead-zinc mine in western North Carolina, USA. The highly unusual secondary assemblage of Pb-Zn-Cu sulfates, thiosulfates...

...Tian-Yi Lu; Hao Cheng; Yoshio Takahashi; Tsuyoshi Iizuka; Qiong Chen; Limin Gao Abstract High-pressure eclogites with continental affinities exposed on Earth’s surface offer insights into the subduction process. However, the isotopic characteristics of zinc in these subducted continental crustal...

... , F.Z. , Helz , R.T. , and Moynier , F. , 2013 , Zinc isotope fractionation during magmatic differentiation and the isotopic composition of the bulk Earth : Earth and Planetary Science Letters , v. 369–370 , p. 34 – 42 , https://doi.org/10.1016/j.epsl.2013.02.037 . Chen , Q...

... , F. , 2012 , Zinc isotopic evidence for the origin of the Moon : Nature , v. 490 , p. 376 – 379 , https://doi.org/10.1038/nature11507 . Potts , N.J. , Barnes , J.J. , Tartèse , R. , Franchi , I.A. , and Anand , M. , 2018 , Chlorine isotopic compositions of apatite...

.../Ca ratios of this species may also be influenced by upwelling ( Davis et al., 2020 ). Zinc incorporation has been found to be potentially reflective of productivity, oxygen concentration, and/or carbonate ion concentration in benthic foraminifera ( Marchitto et al., 2000 ; Bryan & Marchitto...

...-Tournaisian carbon isotope excursion [TICE]), although the underlying cause of this isotopic event remains uncertain. Zinc (Zn), an essential micronutrient for plankton, has an isotopic composition (δ 66 Zn) in seawater that is sensitive to subtle fluctuations in marine carbon (C) cycling. Here, we...

... Fe(III) ( Liu et al., 2014 ; Ling et al., 2023 ), leading to significant Fe isotope fractionation during relatively reductive weathering. Zinc isotopes (δ 66 Zn) are also sensitive to continental weathering, given that the heavy Zn isotope is preferentially released into fluids and adsorbed to Fe...

... 2024 12 7 2024 18 7 2024 © 2024 Geological Society of America 2024 Zinc (Zn) functions as a cofactor for two key enzymes, namely, carbonic anhydrase and alkaline phosphatase, playing an indispensable role in fundamental biological reactions within marine living organisms ( Morel...

...Tassiane P. Junqueira; Bas Vriens; Matthew I. Leybourne; Anna L. Harrison; Kaj V. Sullivan; Hyeryeong Jeong; Daniel F. Araújo Zinc (Zn) is an essential trace element that is involved in both biotic and abiotic processes in Earth's surface environments. Over the last 20 years, advances in mass...

... by The Geological Society of London for GSL and AAG. All rights reserved 2024 © 2024 The Author(s) geochemical exploration field survey cobalt nickel lead zinc cathodic stripping voltammetry anodic stripping voltammetry screen-printed carbon electrodes Horizon 2020 Framework Programme http...

... , H.-C. , 2022 , Tracing carbonate dissolution in subducting sediments by zinc and magnesium isotopes : Geochimica et Cosmochimica Acta , v. 319 , p. 56 – 72 , https://doi.org/10.1016/j.gca.2021.12.020 . Raymo , M.E. , and Ruddiman , W.F. , 1992 , Tectonic forcing of late...

... as a dextral transcurrent fault during a D 3 deformation event. Copper-zinc-silver prospects and minor occurrences are abundant in the Powell block northwest of the Joliet breccia ( Fig. 2 ). Although all were studied in detail, only the Powell F-zone and Powell D-zone ( Fig. 6 ) data are presented...

... deposits, which tend to interlayers of natural heavy mineral concentrates. The mineral forms relict inclusions in magnetite crystals. Its composition is distinguished by high concentrations of zinc (up to 11.62 wt.% ZnO) and manganese (up to 6.32 wt.% MnO) with an almost complete absence of magnesium...

...Ganglan Zhang; Yinan Deng; Fang Chen; Ming Li; Jun Cao; Hongfei Lai; Yangtao Zhu; Shengxiong Yang; Qianyong Liang; Zenggui Kuang; Yunxin Fang; Yufei Liu; Xuexiao Jiang; Mingyu Zhao Abstract Copper-zinc isotopic excursions in carbonate sedimentary successions are used to trace oceanic chemistry...

..., accounting for 83.98 and 69.39%, respectively. Arsenic and mercury have anthropogenic sources, accounting for 68.7 and 44.0%, respectively. Lead is controlled by both lead–zinc mining and geological background, accounting for 47.7 and 36.4%, respectively. The UNMIX model demonstrates that the spatial...

... ( Vedanta Zinc International, 2020 ). Figure 1. ( A ) The location (Google Earth) and simplified geology (adapted from Rozendaal et al., 2017 ) of the four polymetallic deposits of the Gamsberg-Aggeneys Ore District, namely Broken Hill, Swartberg (Black Mountain), Gamsberg, and Big Syncline. ( B...

..., and crystallography : Canadian Mineralogist , v. 54 , p. 1261 – 1284 , https://doi.org/10.3749/canmin.1500104 . Chen , G.Y. , An , Q. , and Wang , M. , 2006 , Geological characteristics and genesis of the Banbianjie type lead-zinc deposits in southern Guizhou Province : Acta Geoscientica...

..., 171, and 172 ppm. These displacements may be explained by the participation of carboxylate groups in a network of hydrogen bonds and/or non-bonded bridge interactions on the solid surface, as well as possible electrostatic interactions and complexation by the carboxyl with lamellar zinc atoms (C-O-Zn...