Lazulite
Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
Mineral NameLazulite
Chemical Formula(Mg,Fe²⁺)Al₂(PO₄)₂(OH)₂
Mohs Hardness5.5
Crystal Systemmonoclinic
Lustervitreous
Streak Colorwhite
Cleavagedistinct on {110}
Fractureuneven to conchoidal
Specific Gravity3.1
Colorsdeep blue, azure blue, greenish-blue
Transparencytranslucent
Type LocalityCrosscut Creek, Area 1 (Kulan Camp), Rapid Creek, Dawson Mining District, Yukon Territory, Canada
Mineral Groupphosphates
Usescollector, minor gemstone
Associated Mineralsquartz
Rarityuncommon
Description
This specimen showcases lustrous, deep blue to greenish-blue lazulite crystals intergrown with numerous clear to smoky quartz crystals, forming an attractive mineral cluster.
Geological Context
Lazulite typically forms in high-grade metamorphic rocks, such as quartzites and schists, often associated with pegmatites or hydrothermal veins.
