Rutilated Quartz
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 NameRutilated Quartz
Chemical FormulaSiO2 (with TiO2 inclusions)
Mohs Hardness7
Crystal Systemtrigonal
Streak ColorWhite
CleavageNone
FractureConchoidal
Specific Gravity2.65
Colorscolorless, smoky, golden, yellowish-brown
TransparencyTransparent
Type LocalityIbitiara, Bahia, Northeast Region, Brazil
Mineral GroupSilicates (host), Oxides (inclusions)
Usesjewelry, collector's item, ornamental
Associated Mineralsrutile
Description
A transparent to slightly smoky quartz specimen densely filled with numerous fine, golden to yellowish-brown needle-like rutile inclusions, creating a striking visual effect.
Geological Context
Rutilated quartz forms when acicular rutile crystals grow within a quartz crystal during its formation, typically in hydrothermal veins or pegmatites, under specific temperature and pressure conditions.
