Abstract
The occurrence of five rare minerals in the Eastern Brazilian Pegmatite Province, northeastern Minas Gerais, is described and discussed: bergslagite [CaBe(AsO4)(OH)] from the Manoel Fonseca mine, Coronel Murta county; herderite [CaBe(PO4)F] from the Funil mine, Medina county; lithiophosphate [Li3PO4] from the Cachoeira mine, Aracuai/Itinga counties; lithiotantite [Li(Ta,Nb)3O8] from the Murundu mine, Itinga county; and kosnarite [KZr2(PO4)3] from Mario Pinto mine, Itinga county. The host pegmatites of these minerals, with their respective main chemical and/or mineralogical features are also presented. As a consequence of such discoveries, Raman spectra for lithiotantite and lithiophosphate were made available, and crystal structure refinement for lithiotantite was performed.
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