Organic (Anthropological Artifact)

Browse organic (anthropological artifact) specimens identified by the Rock Identifier community.

Chert (variations include Flint/Jasper)

Cryptocrystalline Quartz (SiO2)

Chert / Flint

Silicon Dioxide (SiO2)

Chert (White/Light Tan)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint)

Chert (Microcrystalline Quartz, SiO2)

Chert (often called Flint for dark variants)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Arrowhead or Projectile Point)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (and its variety Flint)

Silicon Dioxide (SiO2) - Microcrystalline or cryptocrystalline Quartz

Brown Jasper (Likely)

Jasper (Cryptocrystalline Silicon Dioxide - SiO2)

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Chert (or possibly Flint)

Chert (variant: Flint)