Pumpellyite-(Mn2+)

Ca2Mn2+Al2(Si2O7)(SiO4)(OH)2·H2O

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Pumpellyite-(Mn2+) is the manganese-dominant member of the pumpellyite sorosilicate group, crystallizing in the monoclinic system as greenish to brownish prismatic crystals in Mn-rich low-grade metamorphic rocks. It occurs in manganese-rich sedimentary sequences subjected to pumpellyite-prehnite or greenschist facies metamorphism. The mineral is of scientific interest as a record of Mn enrichment during low-grade metamorphism.

Frequently Asked Questions

What is the chemical formula of Pumpellyite-(Mn2+)?
The chemical formula of Pumpellyite-(Mn2+) is Ca2Mn2+Al2(Si2O7)(SiO4)(OH)2·H2O.