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Effenbergerite: BaCuSi4O10 Sugilite: KNa2(Fe+++,Mn+++,Al)2Li3Si12O30
Comments: Blue effenbergerite pods to across in massive purple sugilite.
Location: Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa.
Scale: Crystal size 4 mm.
© John Veevaert