mineral
Jasper / Agate with Petrified Wood Inclusion
SiO2
AI-generated identification · may be incorrectHardness 6.5-7, multicolored (red, orange, grey, black), waxy to dull luster, microcrystalline structure, conchoidal fracture.
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Physical properties
Hardness 6.5-7, multicolored (red, orange, grey, black), waxy to dull luster, microcrystalline structure, conchoidal fracture.
Formation & geological history
Formed through silica precipitation from groundwater in sedimentary or volcanic environments, often filling cavities or replacing organic material (like wood).
Uses & applications
Used in lapidary arts, cabochons, jewelry, and ornamental objects.
Geological facts
This specimen appears to be a mixed cryptocrystalline quartz, possibly from a region like the Morrison Formation in the US, known for colorful dinosaur bone and petrified wood.
Field identification & locations
Identify by its hardness (scratches glass), lack of cleavage, smooth conchoidal fracture, and vibrant, opaque to translucent colors. Common in western US states.
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