Lazulite
![](/Images/godic/202501/23/Lazulite-tmix07-168a0045.jpg")
![Lazulite: Laila, Gilgit District, Gilgit-Baltistan, Pakistan. Size 2.4 x 1.7 x 0.8 cm.](/Images/godic/202501/23/Lazulite-dtn2a0045.jpg")
![Lazulite from Färbergraben, Werfen, Austria. Blue crystals of lazulite to 1.2 cm on a quartz matrix.](/Images/godic/202501/23/Lazulite-2756030045.jpg")
Lazulite ((Mg,Fe)Al2(PO4)2(OH)2) is a blue, phosphate mineral containing magnesium, iron, and aluminium phosphate. Lazulite forms one endmember of a solid solution series with the darker iron rich scorzalite.
Lazulite crystallizes in the monoclinic system. Crystal habits include steep bipyramidal or wedge-shaped crystals. Lazulite has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.0 to 3.1. It is infusible and insoluble.