sedimentary
Picture Jasper
Silicon dioxide (SiO2) with mineral impurities
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7, earthy to vitreous luster, opaque with banded or dendritic patterns resembling landscapes in tan, brown, and cream.
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Physical properties
Mohs hardness of 6.5 to 7, earthy to vitreous luster, opaque with banded or dendritic patterns resembling landscapes in tan, brown, and cream.
Formation & geological history
Formed from silica-rich mud or ash deposited in ancient water basins, hardened and impregnated with flowing mineral solutions over millions of years.
Uses & applications
Widely used in ornamental carvings, cabochons, and metaphysical jewelry.
Geological facts
The unique landscape patterns are created by trapped iron and manganese oxides diffusing through the porous layers during diagenesis.
Field identification & locations
Identified by its microcrystalline structure, conchoidal fracture, and distinct scenic patterns; commonly sourced from Idaho, USA, and Madagascar.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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