The new mineral genplesite, Ca3Sn(SO4)2(OH)6∙3H2O, the first natural tin sulfate, is found in cavities in massive chalcopyrite ore at the Oktyabr'skoe Cu-Ni-Pd-Pt deposit (Oktyabr'sky mine), Talnakh, Norilsk district, Siberia, Russia. It is a late-stage hydrothermal mineral associated with greenalite, chamosite, pectolite, ferroactinolite, calcite and fluorapatite. Genplesite occurs as equant, short prismatic or thick tabular hexagonal crystals up to 0.5 mm and crystal clusters up to 0.6 × 1.2 mm. The major crystal forms are {1 0 0} and {0 0 1} whereas {1 0 2} and {1 0 1} are minor. Genplesite is transparent, colourless, with vitreous lustre. It is brittle, the Mohs hardness is ca. 3. Cleavage is not observed, the fracture is conchoidal. Dmeas = 2.78(1), Dcalc = 2.773 g · cm−3. Genplesite is optically uniaxial (–), ω = 1.597(2), ε = 1.572(2). The IR spectrum is reported. The chemical composition (wt%, electron microprobe data, H2O calculated for 3 molecules per formula unit, pfu) is: CaO 28.67, Al2O3 0.11, GeO2 0.50, SnO2 24.20, SO3 27.25, H2Ocalc 18.34, total 99.07. The empirical formula calculated on the basis of 17 O apfu is: Ca3.01(Sn0.95Ge0.03Al0.01)Σ0.99S2.01O8(OH)6∙3H2O. Genplesite is hexagonal, P63/mmc, a = 8.5139(2), с = 11.1408(3) Å, V = 699.37(1) Å3 and Z = 2. The strongest reflections of the powder X-ray diffraction pattern [d, Å (I)(hkl)] are: 7.38(68)(1 0 0), 4.259(46)(1 1 0), 3.503(15)(2 0 1), 3.383(1 0 0)(1 1 2), 2.616(13)(2 0 3), 2.493(14)(2 1 2), 2.249(14)(3 0 2) and 2.130(17)(1 0 5, 2 2 0). Genplesite is a member of the fleischerite group. Its crystal structure was solved from single-crystal X-ray diffraction data (R = 0.016). The major building unit of the structure is a column consisting of isolated Sn4+(OH)6 octahedra and trimers of edge-sharing CaO2(OH)4(H2O)2 polyhedra. Adjacent columns are interconnected via H2O molecules and SO4 tetrahedra. Genplesite is named in honour of Gennadiy N. Plesin (b. 1963), a mine surveyor at the Oktyabr'sky mine and an amateur mineralogist who found the mineral.
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Research Article|
March 01, 2018
Genplesite, Ca3Sn(SO4)2(OH)6∙3H2O, a new mineral of the fleischerite group: first occurrence of a tin sulfate in nature
Igor V. Pekov;
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
Corresponding author, e-mail: [email protected]
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Evgeny V. Sereda;
Evgeny V. Sereda
2
Norilskgeologiya, PO Box 889
, 663330Talnakh, Norilsk, Krasnoyarsk Krai, Russia
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Natalia V. Zubkova;
Natalia V. Zubkova
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
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Vasiliy O. Yapaskurt;
Vasiliy O. Yapaskurt
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
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Nikita V. Chukanov;
Nikita V. Chukanov
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
3
Institute of Problems of Chemical Physics, Russian Academy of Sciences
, Chernogolovka, Moscow Region142432, Russia
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Sergey N. Britvin;
Sergey N. Britvin
4
Department of Crystallography, St Petersburg State University
, Universitetskaya Nab. 7/9, St Petersburg199034, Russia
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Inna S. Lykova;
Inna S. Lykova
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
5
Fersman Mineralogical Museum of Russia
n Academy of Sciences
, Leninsky Prospekt 18-2, Moscow119071, Russia
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Dmitry Y. Pushcharovsky
Dmitry Y. Pushcharovsky
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
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Evgeny V. Sereda
2
Norilskgeologiya, PO Box 889
, 663330Talnakh, Norilsk, Krasnoyarsk Krai, Russia
Natalia V. Zubkova
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
Vasiliy O. Yapaskurt
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
Nikita V. Chukanov
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
3
Institute of Problems of Chemical Physics, Russian Academy of Sciences
, Chernogolovka, Moscow Region142432, Russia
Sergey N. Britvin
4
Department of Crystallography, St Petersburg State University
, Universitetskaya Nab. 7/9, St Petersburg199034, Russia
Inna S. Lykova
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
5
Fersman Mineralogical Museum of Russia
n Academy of Sciences
, Leninsky Prospekt 18-2, Moscow119071, Russia
Dmitry Y. Pushcharovsky
1
Faculty of Geology, Moscow State University, Vorobievy Gory
, 119991Moscow, Russia
Corresponding author, e-mail: [email protected]
Publisher: Deutsche Mineralogische Gesellschaft, Sociedad Española de Mineralogia, Societá Italiana di Mineralogia e Petrologia, Société Francaise de Minéralogie
Received:
15 May 2017
Revision Received:
10 Aug 2017
Accepted:
30 Aug 2017
First Online:
14 Aug 2018
Online ISSN: 1617-4011
Print ISSN: 0935-1221
© 2018 E. Schweizerbart'sche Verlagsbuchhandlung, D-70176 Stuttgart
European Journal of Mineralogy (2018) 30 (2): 375–382.
Article history
Received:
15 May 2017
Revision Received:
10 Aug 2017
Accepted:
30 Aug 2017
First Online:
14 Aug 2018
Citation
Igor V. Pekov, Evgeny V. Sereda, Natalia V. Zubkova, Vasiliy O. Yapaskurt, Nikita V. Chukanov, Sergey N. Britvin, Inna S. Lykova, Dmitry Y. Pushcharovsky; Genplesite, Ca3Sn(SO4)2(OH)6∙3H2O, a new mineral of the fleischerite group: first occurrence of a tin sulfate in nature. European Journal of Mineralogy 2018;; 30 (2): 375–382. doi: https://doi.org/10.1127/ejm/2018/0030-2722
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Index Terms/Descriptors
- Asia
- cell dimensions
- chemical composition
- Commonwealth of Independent States
- crystal chemistry
- crystal form
- crystal structure
- electron probe data
- formula
- hydrothermal alteration
- infrared spectra
- Krasnoyarsk Russian Federation
- metasomatism
- new minerals
- Norilsk region
- optical properties
- physical properties
- Russian Federation
- Siberia
- spectra
- sulfates
- symmetry
- Taymyr Dolgan-Nenets Russian Federation
- X-ray diffraction data
- Oktyabr'skoye Deposit
- hydrated sulfates
- Oktyabr'sky Mine
- Talnakh Russian Federation
- genplesite
- fleischerite group
Latitude & Longitude
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