Minerals of the lazulite group have the same crystal structure, including phosphate with a hydroxide group, except for wilhelmkleinite, which belongs to the arsenic group. Occurrence is not linked to a specific environment, so it can be localized in various geological environments, such as quartz and phosphorus-rich pectoids, metacrements and crystals, phosphorus sedimentary iron ores, hydrothermal altered andesites and alpine quartz. Attention was paid mainly to the Tribec field and lazulite mineralization in quartz veins bound to spore-meta meta-anemia. Mineralization consists of lazulite, hematite, barite and minerals formed during metamorphosis. Lazulite is often converted to yellow to yellowish-white flesh, which consists of secondary phosphate-sulphate minerals, mainly gorceixite, goyazite, svanberite and jarosite.