ABSTRACT

Mineral species that contain the decavanadate isopolyanion [V10O28]6–, including its protonated and mixed-valence variants, constitute the pascoite family of minerals. Within the pascoite family, the isostructural minerals pascoite and magnesiopascoite form the pascoite group and the isostructural minerals lasalite and ammoniolasalite form the lasalite group. Rakovanite, which was originally assigned the ideal formula Na3[H3V10O28]·15H2O, is redefined with the ideal formula (NH4)3Na3[V10O28]·12H2O.

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