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Pumpellyite-(Al): Ca2(Al,Fe++,Mg)Al2(SiO4)(Si2O7)(OH,O)2·H2O
Comments: Pale green radiating fibrous to bladed pumpellyite-(Al) crystals on matrix. Location: La Fleche Quarry, Bertrix, Luxembourg Province, Belgium. Scale: See Image. © Rruff Database