sedimentary
Chert Arrowhead (Projectile Point)
Chert (Cryptocrystalline Quartz, SiO2)
Hardness: 6.5-7 (Mohs); Color: Tan, beige, or brown with iron staining; Luster: Dull to waxy; Structure: Microcrystalline; Conchoidal fracture patterns from flaking.
- Hardness
- 6
- Color
- Tan, beige, or brown with iron staining
- Luster
- Dull to waxy
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Physical properties
Hardness: 6.5-7 (Mohs); Color: Tan, beige, or brown with iron staining; Luster: Dull to waxy; Structure: Microcrystalline; Conchoidal fracture patterns from flaking.
Formation & geological history
Formed as nodules or beds in sedimentary limestone or chalk via chemical precipitation of silica. This piece was later anthropogenically modified through knapping.
Uses & applications
Historically used as a hunting tool or weapon; currently valued as an archaeological artifact and for private collections.
Geological facts
This is a lithic artifact created by ancient peoples using a process called pressure flaking to create a sharp edge. It is a tangible link to prehistoric technology.
Field identification & locations
Identify by looking for rhythmic flake scars and a symmetrical 'projectile' shape. Often found in plowed fields or near ancient water sources. Note: Local laws may restrict the collection of artifacts.
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