Arrowheads are anthropogenic artifacts crafted from cryptocrystalline silica rocks like chert, flint, or obsidian through the process of knapping. Collectors focus on identifying the distinct stylistic flaking patterns used by indigenous cultures to determine their historical and archaeological value.
Is this arrowheads?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch arrowheads with a known reference. Arrowheads sits at Mohs 6.5-7 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Arrowheads leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Arrowheads typically shows a waxy luster.
- 4Match the color rangeCompare against the expected color range: white, gray, brown, black, tan.
- 5Look at form & habitCrystal system: amorphous. Typical habit: flaked.
Often found alongside arrowheads
Minerals reported to co-occur with arrowheads. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- SiO₂
- Mohs hardness
- 6.5-7
- Density
- 2.6-2.7 g/cm³
- Streak
- White
- Luster
- Waxy
- Transparency
- Opaque
- Crystal system
- Amorphous
- Crystal habit
- Flaked
- Cleavage
- None
- Rarity
- Common
- Uses
- Collector, Decorative
- Host rock
- N/A
- Typical price
- $5-100 per piece depending on age and provenance
Where rockhounds find arrowheads
2 mapped spotsClassic worldwide localities
- United States
- Mexico
- Canada
- Western Europe
Field-hunting tip
Look in n/a country — that is the host setting where arrowheads typically forms. If you start seeing chert, flint, obsidian in float, you are in the right ground. Field specimens usually show a flaked habit, so train your eye for that shape before scanning the outcrop. In the U.S., the densest reported localities are in Nebraska, Nevada — start trip planning there.



