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Agakhanov et al. (2023). Letnikovite-(Ce), (NaO)Ca₂Ce₂[Si₇O₁₇(OH)]F₄(H₂O)₄, a new mineral from the Darai-Pioz alkaline massif, Tajikistan: mineral description, crystal structure and a new single [Si₇O₁₇(OH)] sheet. Min. Mag., in press. https://t.co/pdBpn3v