Image: <a href="//commons.wikimedia.org/wiki/User:Cccefalon" title="User:Cccefalon">CEphoto, Uwe Aranas</a> (CC BY-SA 3.0)
cubiccommonSilicates
Quartz
SiO2
The image displays an agate geode with a hollow interior lined with numerous sparkling, often colorless to white, well-formed hexagonal quartz crystals.
Quartz Physical Properties
Mohs Hardness
7Crystal System
cubicLuster
vitreousStreak Color
WhiteCleavage
NoneFracture
ConchoidalSpecific Gravity
2.65Colors
colorless, white, purple, pink, brown, black, yellow, green, blueTransparency
Transparent to translucentType Locality
Worldwide (e.g., Brazil, Arkansas, Alps)Mineral Group
SilicatesUses
jewelry, industrial, abrasives, electronics, collectorAssociated Minerals
feldspar, mica, calcite, pyrite, chalcedonyRarity
commonGeological Context
Quartz is one of the most abundant minerals in the Earth's crust, forming in various geological environments including igneous, metamorphic, and sedimentary rocks. It often crystallizes from silica-rich hydrothermal fluids in veins, geodes, and pegmatites.
