'Rhythmite', Ca 29 (SiO 4) 8 Cl 26 , an Anthropogenic Phase from the Chelyabinsk Coal Basin (Ural, Russia) with a Complex Modular Structure Related to α-Ca 3 SiO 4 Cl 2 ('Albovite'): Crystal Structure, Raman Spectra, and Thermal Expansion. - Avdontceva, Margarita S.; Zolotarev, Andrey A.; Brazhnikova, Anastasia S.; Bocharov, Vladimir N.; Vlasenko, Natalia S.; Rassomakhin, Mikhail A.; Krivovichev, Sergey V. (Minerals (2075-163X), 2024)