Ferro-glaucophane : ◻[Na2][Fe2+3Al2]Si8O22(OH)2
Mindat locality:
Collected by:
Photo added to mindat.org
“Ferroglaucophane crystals (size 14-26 mm) from Herin mine (TL).
Collection and photo Giovanni Fraccaro.”
Giovanni Fraccaro - 14th October 2008
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