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
Colorscolorless, white, light brown
Transparencytransparent
Type LocalityUbiquitous (e.g., Brazil, Arkansas, Alps)
Mineral Groupsilicates
Usesjewelry, industrial, collector, electronics
Associated Mineralsfeldspar, mica, calcite, pyrite
Raritycommon
Description
The image displays a dense cluster of small, elongated, prismatic quartz crystals, ranging from transparent to translucent, with some showing a milky or light brownish tint due to inclusions or staining.
Geological Context
Quartz is a common rock-forming mineral found in igneous, metamorphic, and sedimentary rocks, crystallizing from magma, hydrothermal solutions, and precipitating in various geological environments.
