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cubiccommonSilicates
Rutilated Quartz
SiO2 (with TiO2 inclusions)
A clear to smoky quartz specimen characterized by delicate, hair-like inclusions of golden, reddish-brown, or black rutile needles.
Rutilated Quartz Physical Properties
Mohs Hardness
7Crystal System
cubicLuster
vitreousStreak Color
WhiteCleavage
NoneFracture
ConchoidalSpecific Gravity
2.65Colors
colorless, smoky, golden, reddish-brown, blackTransparency
TransparentType Locality
Brazil, Madagascar, Australia, USA (North Carolina)Mineral Group
SilicatesUses
jewelry, collector's itemAssociated Minerals
feldspar, mica, tourmalineRarity
commonGeological Context
Forms when titanium-rich fluids are present during the growth of quartz crystals, allowing rutile needles to crystallize within the developing quartz lattice, often in hydrothermal veins or pegmatites.
