sedimentary
Chert / Flint (Artifact)
Microcrystalline Quartz (SiO2)
Hardness: 7 on Mohs scale. Color: Gray, brown, and weathered patinas. Luster: Vitreous to dull. Crystal structure: Cryptocrystalline (microscopic quartz crystals). Fracture: Conchoidal.
- Hardness
- 7 on Mohs scale
- Color
- Gray, brown, and weathered patinas
- Luster
- Vitreous to dull
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Physical properties
Hardness: 7 on Mohs scale. Color: Gray, brown, and weathered patinas. Luster: Vitreous to dull. Crystal structure: Cryptocrystalline (microscopic quartz crystals). Fracture: Conchoidal.
Formation & geological history
Formed through the chemical precipitation of silica-rich fluids in marine environments or the replacement of limestone/chalk over millions of years.
Uses & applications
Historically used by indigenous peoples for creating sharpened stone tools such as projectile points, scrapers, and blades.
Geological facts
This specimen appears to be a small lithic artifact or debitage showing intentional pressure flaking or shaping along the edges, making it of archaeological interest.
Field identification & locations
Identify by its conchoidal fracture, sharp edges when flaked, and waxy luster. Commonly found in sedimentary rock formations worldwide, particularly chalk and limestone beds.
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