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Belogubite, a New Mineral of the Chalcanthite Group from the Gaiskoe Deposit, South Urals, Russia

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Abstract

Belogubite CuZn(SO4)2 ⋅ 10H2O, a new mineral of the chalcanthite group, is found in the Gai (Gaiskoe) massive sulfide deposit, South Urals, Russia. This mineral forms aggregates of blue grains up to 1 mm. It is optically biaxial (–), np = 1.512(2), nm = 1.525(2), ng = 1.531(2), 2V = 70(10)°. The chemical composition of the holotype sample is as follows (wt %): 1.12 MgO, 0.10 MnO, 3.15 FeO, 8.98 CuO, 18.02 ZnO, 32.49 SO3, and 36.75 H2O, total 100.61. The empirical formula is (Cu0.55Zn0.45)Σ1.00(Zn0.64Fe0.22Mg0.14Mn0.01)Σ1.01S1.99O7.98 ⋅ 10.02H2O. The crystal structure of belogubite is studied using the single crystal method, R = 0.016. The mineral is triclinic, P\({{\bar {1}}}{\text{.}}\) The unit cell parameters are: a = 6.2548(1), b = 10.6112(2), c = 6.0439(1) Å, α = 82.587(1), β = 109.625(1), γ = 104.848(1)°, V = 364.81(1) Å3, and Z = 1. The strongest reflections of the powder XRD pattern [dmeas., Å (I, %) (hkl) are: 5.73 (35) (100), 5.576 (47) (–110), 4.873 (100) (–111), 3.907 (31) (021), 3.719 (45) (0 –21), 3.229 (27) (111), 2.915 (25) (–221), and 2.684 (26) (130).

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ACKNOWLEDGMENTS

The authors are grateful to I.V. Pekov for fruitful comments and discussion.

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Authors and Affiliations

  1. Fersman Mineralogical Museum, Russian Academy of Sciences, 119071, Moscow, Russia

    A. V. Kasatkin, A. A. Agakhanov & D. I. Belakovskiy

  2. St. Petersburg State University, 199034, St. Petersburg, Russia

    S. N. Britvin

  3. Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    N. V. Chukanov

  4. Masarikov University, 61137, Brno, Czech Republic

    R. Škoda

Authors
  1. A. V. Kasatkin
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  2. S. N. Britvin
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  3. N. V. Chukanov
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  4. R. Škoda
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  5. A. A. Agakhanov
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  6. D. I. Belakovskiy
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Correspondence to A. V. Kasatkin.

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Translated by I. Melekestseva

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Kasatkin, A.V., Britvin, S.N., Chukanov, N.V. et al. Belogubite, a New Mineral of the Chalcanthite Group from the Gaiskoe Deposit, South Urals, Russia. Geol. Ore Deposits 62, 599–607 (2020). https://doi.org/10.1134/S1075701520070065

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  • DOI: https://doi.org/10.1134/S1075701520070065

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