 | Pieczka, Adam, Cooper, Mark A., Hawthorne, Frank C. (2019) Lepageite, Mn32+(Fe73+Fe42+)O3[Sb53+As83+O34], a new arsenite-antimonite mineral from the Szklary pegmatite, Lower Silesia, Poland. American Mineralogist, 104 (7) 1043-1050 doi:10.2138/am-2019-6903 | Journal (article/letter/editorial) | | the formulas of dumortierite-supergroup end-members do not reflect common presence of Sb+As in compositions...zoned with (1) a marginal graphic zone composed of albite + quartz ± minor-to-accessory biotite commonly...quartztourmaline nests, with smaller amounts of albite and biotite, increased abundance of muscovite and...developed as blocky feldspar with interstitial albite, rare muscovite, and no black tourmaline or biotite...mm in size, disseminated in quartz, microcline, albite, and muscovite. Lepageite is an accessory mineral |  | | Book | | stretching and bending vibrations of H2O molecules which do not form strong hydrogen bonds). These bands are...Mg-poor schorl from the Limoeiro mine, Murta, Minas Gerais, Brazil, the band of OH groups in the W site coordinated...with water molecules. However, the available data do not allow us to determine the degree of protonation...[nominally, Fe2+Mn2+2(PO4)2·3H2O] from Cigana mine, Brazil (a), landesite [nominally, Fe3+Mn2+2 (PO4)2(OH)·]...IR spectra of melanophlogite from other localities do not show any presence of methane molecules. In the |
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