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trigonalcommonSilicates
Jasper
SiO₂
A microcrystalline variety of quartz, typically opaque and often exhibiting vibrant colors and patterns due to mineral inclusions.
Jasper Physical Properties
Mohs Hardness
6.5Crystal System
trigonalLuster
dullStreak Color
whiteCleavage
noneFracture
conchoidalSpecific Gravity
2.65Colors
red, yellow, brown, green, blue, orange, black, multicoloredTransparency
opaqueType Locality
Joplin, Jasper Co., MOMineral Group
SilicatesUses
ornamental stone, jewelry, carvings, collector specimensAssociated Minerals
chalcedony, agate, chert, opal, hematite, goethiteRarity
commonGeological Context
Jasper forms in various geological environments, often as a primary precipitate in volcanic rocks, or as a replacement mineral in sedimentary rocks, or in hydrothermal veins. It is a common component of chert.
