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sursassite

noun
sur·​sass·​ite | \ ˌsərˈsaˌsīt\
plural -s

Definition of sursassite

: a mineral Mn5Al4Si5O21.3H2O of the epidote group consisting of a hydrous silicate of manganese and aluminum

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History and Etymology for sursassite

Sursass (Oberhalbstein), eastern Switzerland, its locality + English -ite

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