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Jingwenite-(Y) from the Yushui Cu deposit, South China: The first occurrence of a V-HREE-bearing silicate mineral

  • Peng Liu ORCID logo , Xiangping Gu , Wenlan Zhang , Huan Hu , Xiaodan Chen , Xiaolin Wang ORCID logo , Wenlei Song , Miao Yu and Nigel J. Cook ORCID logo
Published/Copyright: January 3, 2023
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American Mineralogist
From the journal American Mineralogist Volume 108 Issue 1

Abstract

Jingwenite-(Y), Y2Al2V24+(SiO4)O4(OH)4, the first V-HREE-bearing silicate mineral discovered in nature, is an abundant component of a sediment-hosted stratiform Cu (SSC) deposit, Yushui, South China. The mineral occurs in bedded/massive sulfide-bearing ore and is associated with bornite, chalcopyrite, galena, xenotime-(Y), nolanite, thortveitite, roscoelite, barite, and quartz. Optically, jingwenite-(Y) is biaxial (+), with α = 1.92(4), β = 1.95(2), γ = 1.99(3) (white light), and 2V (calculated) = 83°. The dispersion is medium with r < v, and the pleochroism is with X = light brown, Y = brown, Z = dark brown. The color, streak, luster, and hardness (Mohs) are light brown, yellowish gray, vitreous, and 4½–5, respectively.

Jingwenite-(Y) is monoclinic, with space group I2/a, Z = 4, and unit-cell parameters a = 9.4821(2) Å, b = 5.8781(1) Å, c = 19.3987(4) Å, β = 90.165(2)°, and V = 1081.21(4) Å3. The structure of jingwenite-(Y) has chains of edge-sharing Al(V,Fe)-O octahedra and V(Ti)-O octahedra extending along the b-axis and linked by insular Si-O tetrahedra, leaving open channels occupied by HREEs. Jingwenite-(Y) is a new nesosilicate structural type.

Sm-Nd dating and Nd isotope signatures of jingwenite-(Y) reveal an epigenetic origin and suggest that HREEs and V were added to the SSC system via leaching of abundant heavy minerals in the footwall red sandstone by oxidized basinal brines. The abundance of jingwenite-(Y) at Yushui indicates that it could potentially be a valuable resource for HREE and V. Moreover, HREE and V mineralization can also occur in the same sediment-hosted Cu mineral system.

Keywords: New mineral; jingwenite-(Y); heavy rare earth elements; Yushui

Acknowledgments and Funding

We thank Guoguang Wang, Xiaochun Li, Changhui Ke, Wei Jian, and Liang Li for their insightful discussion and technical assistance with EPMA and Sm-Nd isotope analysis. We appreciate the careful editing and constructive comments from Frank Hawthorne and one anonymous reviewer. This research was jointly funded by the National Natural Science Foundation of China (grants 42272070, 42130102, 42072054, and 41902072).

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Received: 2021-11-01
Accepted: 2022-02-01
Published Online: 2023-01-03
Published in Print: 2023-01-27

© 2023 Mineralogical Society of America

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https://doi.org/10.2138/am-2022-8373
Keywords for this article
New mineral; jingwenite-(Y); heavy rare earth elements; Yushui

Articles in the same Issue

  1. MSA Review
  2. Nickel in olivine as an exploration indicator for magmatic Ni-Cu sulfide deposits: A data review and re-evaluation
  3. Repeat, fast, and high-resolution mapping of fine-scale trace element distribution in pyrite and marcasite by LA-Q-ICP-MS with the Aerosol Rapid Introduction System (ARIS)
  4. Continuous Be mineralization from two-mica granite to pegmatite: Critical element enrichment processes in a Himalayan leucogranite pluton
  5. An evolutionary system of mineralogy, Part VI: Earth’s earliest Hadean crust (>4370 Ma)
  6. Oxidation or cation re-arrangement? Distinct behavior of riebeckite at high temperature
  7. Fe3+/FeT ratios of amphiboles determined by high spatial resolution single-crystal synchrotron Mössbauer spectroscopy
  8. How clay delamination supports aseismic slip
  9. The influence of Al2O3 on the structural properties of MgSiO3 akimotoite
  10. Atomistic insight into the ferroelastic post-stishovite transition by high-pressure single-crystal X-ray diffraction
  11. Epidote as a conveyor of water into the Earth’s deep mantle in subduction zones: Insights from coupled high-pressure and high-temperature experiments
  12. Potential link between antigorite dehydration and shallow intermediate-depth earthquakes in hot subduction zones
  13. Stability of Fe5O6 and its relation to other Fe-Mg-oxides at high pressures and temperatures
  14. From schwertmannite to natrojarosite: Long-term stability and kinetic approach
  15. Trace element and isotopic (S, Pb) constraints on the formation of the giant Chalukou porphyry Mo deposit, NE China
  16. Textural and chemical evolution of magnetite from the Paleozoic Shuanglong Fe-Cu deposit: Implications for tracing ore-forming fluids
  17. Jingwenite-(Y) from the Yushui Cu deposit, South China: The first occurrence of a V-HREE-bearing silicate mineral
  18. Wenjiite, Ti10(Si,P,◻)7, and kangjinlaite, Ti11(Si,P)10, new minerals in the ternary Ti-P-Si system from the Luobusa ophiolite, Tibet, China
  19. Evaluating the physicochemical conditions for gold occurrences in pyrite
  20. Letter
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