Quartz
Image: <a rel="nofollow" class="external text" href="https://www.flickr.com/people/14730981@N08">James Petts</a> from London, England (CC BY-SA 2.0)
Mineral NameQuartz
Chemical FormulaSiO2
Mohs Hardness7
Crystal Systemtrigonal
Lustervitreous
Streak Colorwhite
Cleavagenone
Fractureconchoidal
Specific Gravity2.65
Colorsclear, white, pale orange, brownish
Transparencytransparent
Type LocalityNot specified
Mineral GroupSilicates
Usesjewelry, industrial, collector, electronics
Associated Mineralsbaryte
Raritycommon
Description
A cluster of small, mostly transparent to translucent quartz crystals, some exhibiting a pale orange or brownish tint, growing on a matrix that includes a yellowish mineral.
Geological Context
Quartz is a common rock-forming mineral found in igneous, metamorphic, and sedimentary rocks, often crystallizing from hydrothermal solutions in veins and geodes.
