The vuoriyarvite group includes:
tsepinite-Ca:
(Ca,K,Na)2-x(Ti,Nb)2(Si4O12)(OH,O)2.4H2O
vuoriyarvite-K:
(K,Na,☐)12Nb8(Si4O12)4O8.12-16H2O
The vuoriyarvite group is a member of the
labuntsovite supergroup
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