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Keywords from Image Description:
Arfvedsonit. Arfvedsonite Size cm Locality Poudrette quarry Demix quarry UniMix quarry Desourdy quarry Carrire Mont SaintHilaire Mont SaintHilaire Rouville RCM Montrgie Qubec Canada The xl is about cm Via JeanYves Lamoureux MOB coll It has not been analyzed but it's not from marble xenolith so it's most likely plain arfvedsonite