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Stellerite: CaAl2Si7O18·7(H2O)
Comments: Hemispherical crystal cluster 35 mm diameter of white stellerite crystals in a pocket lined with drusy quartz. Location: Pune (Poonah), Maharashtra, India. Scale: 13x7x5 cm. © John Betts - Fine Minerals
Comments: Orange, blocky crystalline stellerite aggregate. Location: Tambar Springs, New South Wales, Australia. Scale: Picture size 6x4 cm. © Dave Barthelmy