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 LocalityNot specified
Mineral GroupSilicates
Usesjewelry, industrial, collector
Associated Mineralsfeldspar, mica, calcite, pyrite
Raritycommon
Description
This specimen features a prominent, clear, prismatic quartz crystal rising from a base composed of smaller, mostly translucent to opaque, whitish to light brownish quartz crystals.
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 hydrothermal solutions or magmas.
