Petalite
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 NamePetalite
Chemical FormulaLiAlSi4O10
Mohs Hardness6.5
Crystal Systemmonoclinic
Lustervitreous
Streak Colorwhite
Cleavageperfect on {001}, good on {201}
Fractureuneven
Specific Gravity2.42
Colorsbrownish-yellow, colorless, white, grey, yellow, pink
Transparencytranslucent
Type LocalityMogok, Pyin Oo Lwin District, Mandalay Division, Burma (Myanmar)
Mineral Groupsilicates
Usessource of lithium, gemstone, collector
Associated Mineralsspodumene, lepidolite, tourmaline, quartz, feldspar, beryl
Rarityuncommon
Description
This image displays a translucent, brownish-yellow petalite crystal fragment, exhibiting a somewhat blocky, pointed habit with visible internal striations.
Geological Context
Petalite is a lithium aluminum silicate mineral typically found in lithium-rich granitic pegmatites, often forming alongside other lithium-bearing minerals.
