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Trolleite: Al4(PO4)3(OH)3 Lazulite: MgAl2(PO4)2(OH)2
Comments: Pale blue trolleite with darker blue lazulite. Location: Champion Mine, White Mountains, Mono County, California. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Trolleite: Al4(PO4)3(OH)3 Viseite: Ca10Al24(SiO4)6(PO4)7O22F3·72(H2O) (?)
Comments: Chalky white massive viseite with bluish trolleite. Location: Champion Sillimanite Mine, near Laws, Mono County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Trolleite: Al4(PO4)3(OH)3 Berlinite: AlPO4
Comments: Pinkish crystalline berlinite with blue trolleite. Location: Ijzer Mine, Vestana, Christiansted, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species