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Pectolite: NaCa2Si3O8(OH) Aegirine: NaFe+++Si2O6
Comments: White, cottony pectolite tufts with acicular aegirine. Location: 3M quarry, Little Rock, Pulaski County, Arkansas, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Pectolite: NaCa2Si3O8(OH) Sugilite: KNa2(Fe+++,Mn+++,Al)2Li3Si12O30
Comments: Sharp terminated purple crystals of sugilite to 5mm on white, acicular pectolite. Location: Wessels Mine, Kalahari, South Africa. Scale: Picture size 1.5 cm. © John Veevaert