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Ferroglaucophane: [ ]Na2(Fe++3Al2)Si8O22(OH)2
Comments: Back-scattered electron images of the ferroglaucophane (FG) schist showing compositional zoning and are fringed with actinolites (thin and lighter-colored parts. (Earth Science Reports, v4:33).
Location: Ferroglaucophane schist from the Ohsa-yama area, Okayama Prefecture, Japan.
Scale: Scale Bar 100 µm.
© Okayama University