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Lazulite: MgAl2(PO4)2(OH)2 Trolleite: Al4(PO4)3(OH)3
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
Lazulite: MgAl2(PO4)2(OH)2 Bystrite: (Na,K)7Ca(Si6Al6)O24S4.5·(H2O)
Comments: Brownish-yellow bystrite grains with blue lazulite in an igneous rock. Location: Malo-Bystrinskoye lazurite deposit, Tunka Valley, Sludyanka, Lake Baikal Region, Russia. Scale: Picture size 7 mm. © Thomas Witzke / Abraxas-Verlag
Lazulite: MgAl2(PO4)2(OH)2
Comments: Lustrous dark blackish-blue crystals of lazulite to 5 mm in size. Location: Crosscut Creek, Rapid Creek, Yukon Territory, Canada. Scale: 3 x 4.2 x 1.5 cm. © Dan Weinrich
Lazulite: MgAl2(PO4)2(OH)2 Whiteite-(CaMnMg): CaMn++Mg2Al2(PO4)4(OH)2·8(H2O)
Comments: Light beige-colored whiteite-(CaMnMg) crystal perched on dark blue lazulite. Location: Rapid Creek, Yukon Territory, Canada. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals