Agate
Image: <a href="//commons.wikimedia.org/w/index.php?title=User:Ronveron&action=edit&redlink=1" class="new" title="User:Ronveron (page does not exist)">Ronveron</a> (CC BY-SA 3.0)
Mineral NameAgate
Chemical FormulaSiO2
Mohs Hardness6.5
Crystal Systemtrigonal
Streak ColorWhite
CleavageNone
FractureConchoidal
Specific Gravity2.6
Colorsorange, red, blue, white
TransparencyTranslucent
Type LocalityWorldwide (e.g., Brazil, Uruguay, Mexico, USA)
Mineral GroupSilicates
Usesjewelry, ornamental objects, collector's item
Associated Mineralsquartz, calcite, zeolites
Raritycommon
Description
This agate slab displays intricate, swirling patterns of vibrant orange-red material, likely colored by iron oxides, contrasting with cloudy light blue and white translucent bands.
Geological Context
Agate typically forms in the cavities of volcanic rocks, such as basalt, where silica-rich groundwater deposits successive layers of chalcedony, often creating concentric bands.
