Restricted accessNoteFirst published online 2003-12
Spessartine–tourmaline-bearing manganiferous itabirite at Miguel Congo: Petrographic evidence for a Mn-rich metaexhalite in the Quadrilátero Ferrífero of Minas Gerais,Brazil
For the first time, petrographic and electron-microprobe data are provided to demonstrate the existence of a spessartine–tourmaline-bearing itabirite in the Quadrilátero Ferrífero of Minas Gerais, Brazil. This mineral assemblage gives evidence for a metamorphosed B-bearing Fe–Mn-rich sediment, possibly of exhalative origin.
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