Quartz
Image: WendyAvilesR (CC BY-SA 4.0)
Mineral NameQuartz
Chemical FormulaSiO2
Mohs Hardness7
Crystal Systemtrigonal
Lustervitreous
Streak Colorwhite
Cleavagenone
Fractureconchoidal
Specific Gravity2.65
Colorswhite, colorless, milky white
Transparencytranslucent
Type LocalityUnknown (exhibition specimen)
Mineral GroupSilicates
Usesjewelry, industrial, collector
Associated Mineralsfeldspar, mica, pyrite
Raritycommon
Description
A large, prominent cluster of white to milky white, translucent crystalline quartz, displayed in a glass exhibition case alongside other smaller mineral specimens.
Geological Context
Quartz is a ubiquitous rock-forming mineral, crystallizing from various geological processes including igneous and metamorphic activity, and precipitating from hydrothermal solutions in veins and geodes.
