Quartz
Image: “Jon Zander (<a href="//commons.wikimedia.org/wiki/User:Digon3" title="User:Digon3">Digon3</a>)" (CC BY-SA 3.0)
Mineral NameQuartz
Chemical FormulaSiO2
Mohs Hardness7
Crystal Systemtrigonal
Lustervitreous
Streak Colorwhite
Cleavagenone
Fractureconchoidal
Specific Gravity2.65
Colorspale yellow, light brown, white, colorless
Transparencytransparent
Type LocalityWorldwide
Mineral GroupSilicates
Usesjewelry, industrial, collector
Associated Mineralsfeldspar, mica, calcite, pyrite
Raritycommon
Description
This image displays a cluster of pale yellow to colorless quartz crystals, exhibiting well-formed hexagonal prisms and pyramidal terminations, with a vitreous luster.
Geological Context
Quartz is a ubiquitous mineral found in a vast array of geological settings, crystallizing from magma, hydrothermal solutions, and forming in metamorphic and sedimentary rocks.
