Belogubite, a new mineral of the chalcanthite group from the Gayskoe deposit, South Urals, Russia

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Belogubite, ideally CuZn(SO4)2·10H2O, has been found in the supergene zone uncovered by the open pit at the Gayskoe massive sulfide Zn-Cu deposit (Orenburgskaya region, the South Urals, Russia). It is associated with dietrichite and may contain relics of quartz. Belogubite forms aggregates of blue grains up to 1 mm in size. The mineral is transparent with vitreous luster and white streak. Its color varies from pale equant to light blue. Cleavage and parting were not observed. The new mineral is brittle and has Mohsʼ hardness ca. 2½. Its density measured by floatation in bromoform+ethanol is 2.27(2) g/cm–3, its calculated density is 2.249 g/cm–3. Belogubite is biaxial (–), α = 1.512(2), β = 1.525(2), γ = 1.531(2); 2V (meas.) = 70(10)°, 2V (calc.) = 67.9°. Dispersion is noticeable, r < v. The mineral is nonpleochroic. Chemical composition of the holotype sample is (wt %, electron microprobe data, H2O determined by thermogravimetry): MgO 1.12, MnO 0.10, FeO 3.15, CuO 8.98, ZnO 18.02, SO3 32.49, H2O 36.75, total 100.61. Its empirical formula calculated on the basis of 18 O apfu is: (Cu0.55Zn0.45)Σ1.00(Zn0.64Fe0.22Mg0.14Mn0.01)Σ1.01S1.99O7.98·10.02H2O. The structure was solved by direct methods and refined on the basis of 1797 independent reflections to R = 0.016. Belogubite is triclinic, P1̅ . 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, Z = 1. The strongest reflections of the powder XRD pattern are [dobs, Å (I) (hkl)]: 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), 2.684 (26) (130). Belogubite is a new, CuZn-ordered member of the chalcanthite group having M1 cationic site preferentially occupied by Cu whereas M2 site is dominated by Zn with subordinate substitution of Fe2+ and Mg. The mineral is named in honor of Elena Vitalievna Belogub (born 1963), major researcher of the Institute of Mineralogy of the Urals Branch of Russian Academy of Sciences, Miass, Chelyabinsk Oblast, Russia, a well-known expert in the mineralogy of volcanic-hosted massive sulfide copper deposits of South Urals.

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Sobre autores

Anatoly Kasatkin

Fersman Mineralogical Museum of the Russian Academy of Sciences

Autor responsável pela correspondência
Email: kasatkin@inbox.ru
ORCID ID: 0000-0002-9016-9947
Código SPIN: 3798-4136
Scopus Author ID: 55438217300
Researcher ID: C-3057-2019
Rússia, Leninsky Prospekt 18-2, Moscow, Russia, 119071

Sergey Britvin

Saint Petersburg State University

Email: sbritvin@gmail.com

Department of Crystallography

Rússia, University Embankment 7/9, St Petersburg, Russia, 199034 

Nikita Chukanov

Institute of Problems of Chemical Physics RAS

Email: nikchukanov@yandex.ru
Rússia, Chernogolovka, Moscow Oblast, 142432

Radek Škoda

Masaryk University

Email: rskoda@sci.muni.cz

Department of Geological Sciences, Faculty of Science

Tchéquia, Kotlářská 2,  Brno, Czech Republic, 611 37

Atali Agakhanov

Fersman Mineralogical Museum of the Russian Academy of Sciences

Email: atali99@mail.ru
Rússia, Leninsky Prospekt 18-2, Moscow, Russia, 119071

Dmitriy Belakovskiy

Fersman Mineralogical Museum of the Russian Academy of Sciences

Email: dmz@fmm.ru
Rússia, Leninsky Prospekt 18-2, Moscow, Russia, 119071

Bibliografia

  1. Beevers C. A., Lipson L. The crystal structure of copper sulphate pentahydrate, CuSO4·5H2O. Proc. Royal Soc. London. 1934. Vol. A146. P. 570-582.
  2. Braithwaite R. S. W., Pritchard R. G., Paar W. H., Pattrick R. A. D. A new mineral, zincolibethenite, CuZnPO4OH, a stoichiometric species of specific site occupancy. Mineral. Mag. 2005. Vol. 69. P. 145-153.
  3. Belogub E. V., Novoselov C. A., Spiro B., Yakovleva B. A. Mineralogical and sulphur isotopic features of the supergene profile of Zapadno-Ozernoye massive sulphide and gold-bearing gossan deposit, South Urals. Mineral. Mag. 2003. Vol. 67. P. 339-354.
  4. Belogub E. V., Novoselov C. A., Yakovleva B. A. Oxidation zone of Zapadno-Ozernoye VHMS deposit (South Urals). Yekaterinburg: UrO RAN, 2006. 182 p. (in Russian).
  5. Belogub E. V., Shcherbakova E. P., Nikandrova N. K. Sulfates of Urals: distribution, crystal chemistry, genesis. Moscow: Nauka, 2007. 160 p. (in Russian).
  6. Belogub E. V., Novoselov K. A., Yakovleva V. A., Spiro B. Supergene sulphides and related minerals in the supergene profiles of VHMS deposits from the South Urals. OreGeology Rev. 2008. Vol. 33. P. 239-254.
  7. Belogub E. V., Krivovichev S. V., Pekov I. V., Kuznetsov A. M., Yapaskurt V. O., Kotlyarov V. A., Chukanov N. V., Belakovskiy D. I. Nickelpicromerite, K2Ni(SO4)2·6H2O, a new picromerite-group mineral from Slyudorudnik, South Urals, Russia. Miner. Petrol. 2015. Vol. 109. P. 143-152.
  8. Betekhtin A. G. Mineralogy. Moscow, 1950. 956 p. (in Russian).
  9. Britvin S. N., Dolivo-Dobrovolsky D. V., Krzhizhanovskaya M. G. Software for processing the X-ray powder diffraction data obtained from the curved image plate detector of Rigaku RAXIS Rapid II diffractometer. Zapiski RMO (Proc. Russian Miner. Soc.). 2017. N 3. P. 104-107 (in Russian).
  10. Chukanov N. V., Chervonnyi A. D. Infrared Spectroscopy of Minerals and Related Compounds. Springer Verlag, Cham, 2016. 1109 p.
  11. Chukanov N. V., Pushcharovsky D. Yu., Zubkova N. V., Pekov I. V., Pasero M., Merlino S., Möckel S., Rabadanov M. Kh., Belakovskiy D. I. Zincolivenite CuZn(AsO4)(OH): A new adamite-group mineral with ordered distribution of Cu and Zn. Doklady Earth Sci. 2007. Vol. 415A. N 6. P. 841-845.
  12. Hawthorne F. C., Krivovichev S. V., Burns P. C. The crystal chemistry of sulfate minerals. In: Sulfate minerals: Crystallography, geochemistry, and environmentalsignificance. Rev. Miner. Geochem. 2000. Vol. 40. P. 1-112.
  13. Jambor J. L., Nordstrom D. K., Alpers C. N. Metal-sulfate salts from sulfide mineral oxidation. In: Sulfate minerals: Crystallography, geochemistry, and environmentalsignificance. Rev. Miner. Geochem. 2000. Vol. 40. P. 303-350.
  14. Larsen E. S., Glenn M. L. Some minerals of the melanterite and chalcanthite groups with optical data on the hydrous sulfates of manganese and cobalt. Amer. J. Sci. 1920. Vol. 50. N 297. P. 225-233.
  15. Peterson R. C., Roeder P. L., Zhang Y. The atomic structure of siderotil, (Fe,Cu)SO4·5H2O. Canad. Miner. 2003. Vol. 41. P. 671-676.
  16. Peterson R. C., Hammarstrom J. M., Seal R. R. Alpersite (Mg,Cu)SO4·7H2O, a new mineral of the melanterite group, and cuprian pentahydrite: Their occurrence within mine waste. Amer. Miner. 2006. Vol. 91. P. 261-269.
  17. Pshenichnyi G. N. Gayskoe copper-VHMS deposit of South Urals. Moscow: Nauka, 1975, 188 p. (in Russian).
  18. Siidra O. I., Nazarchuk E. V., Agakhanov A. A., Lukina E. A., Zaitsev A. N., Turner R., Filatov S. K., Pekov I. V., Karpov G. A., Yapaskurt V. O. Hermannjahnite, CuZn(SO4)2, a new mineral with chalcocyanite derivative structure from the Naboko scoria cone of the 2012-2013 fissure eruption at Tolbachik volcano, Kamchatka, Russia. Miner. Petrol. 2018. Vol. 112. P. 123-134.
  19. Zaikov V. V., Sergeyev N. B. Supergene zone of pyrite orebody of Gayskoe deposit (South Urals). Geol. Ore Deposits. 1993. N 35. P. 320-332 (in Russian).

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