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
Colorsclear, white, grey, brown
Transparencytranslucent
Type LocalityWorldwide
Mineral GroupSilicates
Usesjewelry, industrial, collector, electronic components
Associated Mineralsfeldspar, mica, calcite, pyrite
Raritycommon
Description
This image displays a cluster of numerous small, prismatic quartz crystals, predominantly translucent and light grey to white, growing on a matrix with some earthy, brownish material. The crystals exhibit various formations, typical of quartz aggregates.
Geological Context
Quartz is a common rock-forming mineral found in igneous, metamorphic, and sedimentary rocks, often crystallizing from hydrothermal solutions in veins, pegmatites, and geodes. It is highly resistant to weathering, making it a major component of sands and sandstones.
