Quartz
Image: <a href="//commons.wikimedia.org/wiki/User:Archaeodontosaurus" title="User:Archaeodontosaurus">Didier Descouens</a> (CC BY-SA 4.0)
Mineral NameQuartz
Chemical FormulaSiO2
Mohs Hardness7
Crystal Systemtrigonal
Lustervitreous
Streak Colorwhite
Cleavagenone
Fractureconchoidal
Specific Gravity2.65
Colorscolorless, white, milky
Transparencytransparent
Type LocalityHuaron Mines, Huaron Mining District, San Jose de Huayllay District, Cerro de Pasco, Daniel Alcides Carrión Province, Pasco Department, Peru
Mineral GroupSilicates
Usesjewelry, industrial, collector
Associated Mineralsfeldspar, mica, calcite, pyrite
Rarityuncommon
Description
This image displays a Japan-twin Quartz crystal, characterized by two intergrown, mostly transparent to translucent, colorless to milky white crystals forming a distinct V-shape.
Geological Context
Quartz is a ubiquitous mineral found in a wide range of geological environments, including igneous, metamorphic, and sedimentary rocks. It commonly crystallizes from silica-rich hydrothermal solutions in veins and vugs, often associated with ore deposits.
