Abstract
A number of rare phosphates have been found in specimens from the Chalotskoe pegmatite deposit, Transbaikal region, Russia: väyrynenite, MnBe[PO4](OH,F); parascholzite, CaZn2[PO4]2 · 2H2O; messelite, Ca2(Fe2+,Mn)[PO4]2 · 2H2O; eosphorite, MnAl[PO4](OH)2 · H2O; moraesite, Be2[PO4](OH)4H2O; and fluorapatite. Väyrynenite forms pink grains 2–3 mm in size, less frequent prismatic crystals up to 0.8 × 3.0 cm, and spheres up to 3 mm in diameter. Parascholzite occurs as pockets up to 0.6 × 1.0 cm composed from snow-white small grains. Messelite forms pale yellow honeycomb grains and poorly shaped crystals up to 1 mm. Eosphorite has been seen in the Chalotskoe pegmatites before, but it has not been studied in detail. It occurs as red-brown prismatic crystals up to 8 cm in length, occasionally forming openbook- like aggregates and pink to pale pink grains up to 5 mm in size. Moraesite forms snow-white fibrous aggregates up to 5 × 6 mm, together with white spheres and short prismatic crystals of fluorapatite up to 1 mm. Microcline, albite, quartz, muscovite, beryl, schorl, almandine-spessartine, columbite-(Fe), and bertrandite are associated minerals. Väyrynenite and parascholzite are found for the first time in Russia.
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Original Russian Text © I.S. Lykova, D.A. Varlamov, N.V. Chukanov, L.A. Pautov, D.A. Ksenofontov, 2017, published in Zapiski Rossiiskogo Mineralogicheskogo Obshchestva, 2017, No. 4, pp. 43–53.
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Lykova, I.S., Varlamov, D.A., Chukanov, N.V. et al. Phosphates of the Chalotskoe Pegmatite Deposit, Transbaikal Region. Geol. Ore Deposits 60, 636–642 (2018). https://doi.org/10.1134/S1075701518070036
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DOI: https://doi.org/10.1134/S1075701518070036
