sedimentary
Chert / Flint (Arrowhead Artifact)
Microcrystalline quartz (SiO2)
Hardness of 7 on the Mohs scale, typically brown or grey in color, waxy to vitreous luster, cryptocrystalline structure, conchoidal fracture
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Physical properties
Hardness of 7 on the Mohs scale, typically brown or grey in color, waxy to vitreous luster, cryptocrystalline structure, conchoidal fracture
Formation & geological history
Formed through the chemical replacement of limestone or chalk by silica-rich solutions in marine environments over millions of years
Uses & applications
Historically used by indigenous peoples for making sharp tools and weapons such as arrowheads and spear points; currently collected as an artifact or geological specimen
Geological facts
This specific piece appears to be a chipped stone artifact, likely a preform or broken projectile point crafted by human hands from cryptocrystalline silica
Field identification & locations
Identified by its conchoidal fracture and intentional flaking scars characteristic of lithic reduction; found worldwide in areas of archaeological significance
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