Image: <a rel="nofollow" class="external text" href="https://www.flickr.com/people/47445767@N05">James St. John</a> (CC BY 2.0)
cubiccommonHalides
Fluorite
CaF2
This image displays a cluster of well-formed cubic fluorite crystals, showcasing distinct deep purple and dark yellow zones within the specimen.
Fluorite Physical Properties
Mohs Hardness
4Crystal System
cubicLuster
vitreousStreak Color
whiteCleavage
perfect octahedral (four directions)Fracture
conchoidalSpecific Gravity
3.18Colors
purple, yellow, blue, green, pink, brown, colorlessTransparency
transparentType Locality
Crystal Victory Mine, near Cave-in-Rock, Illinois, USAMineral Group
HalidesUses
flux in steelmaking, production of hydrofluoric acid, optical lenses, jewelry, collector specimensAssociated Minerals
quartz, calcite, barite, galena, sphaleriteRarity
commonGeological Context
Fluorite typically forms in hydrothermal veins, often associated with metallic ore deposits, and can also be found in sedimentary rocks and pegmatites.
