Agate
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Mineral NameAgate
Chemical FormulaSiO2
Mohs Hardness7
Crystal Systemtrigonal
Lustervitreous
Streak Colorwhite
Cleavagenone
Fractureconchoidal
Specific Gravity2.65
Colorsyellow, orange, brown, black
Transparencytranslucent
Type LocalityWorldwide
Mineral GroupSilicates
Usesjewelry, ornamental objects, collector
Associated Mineralsquartz, calcite, zeolites
Raritycommon
Description
A translucent agate specimen displaying intricate, swirling bands of yellow, orange, brown, and dark black, forming abstract patterns.
Geological Context
Agate typically forms in cavities within volcanic rocks, such as basalt, where silica-rich solutions deposit successive layers of chalcedony over time.
