Genplesite is a very rare tin mineral coming from the Oktyabr'skoe deposit in the Noril'sk area, Russia, which is known for nickel and platinum group elements minerals. Its chemical formula is Ca3Sn(SO4)2(OH)6•3H2O.Pekov, I.V., Sereda, E.V., Zubkova, N.V., Yapaskurt, V.O., Chukanov, N.V., Britvin, S.N., Lykova, I.S., and Pushcharovsky, D.Y., 2014. Genplesite, IMA 2014-034. CNMNC Newsletter No. 21, August 2014, 803; Mineralogical Magazine 78, 797-804 Genplesite is a member of the fleischerite group, and it is a calcium and tin-analogue of fleischerite. It is hexagonal, with space group P63/mmc.
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