landesite

noun
lan·​des·​ite | \ ˈlandəˌsīt\
plural -s

Definition of landesite

: a mineral Fe6Mn20(PO4)16.27H2O(?) consisting of a rare hydrous ferromanganese phosphate occurring as a brown alteration crust on reddingite

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History and Etymology for landesite

Kenneth K. Landes, born 1899 American geologist + English -ite

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