Rock Identifier

Category

Artifact

Browse artifact specimens identified by the Rock Identifier community.

Basalt Metate (Vesicular Basalt) — igneous

Basalt Metate

Vesicular Basalt

Chert / Flint Tool (Cryptocrystalline quartz (SiO2)) — sedimentary

Chert / Flint Tool

Cryptocrystalline quartz (SiO2)

Obsidian Arrowhead (Volcanic Glass (predominantly SiO2)) — igneous

Obsidian Arrowhead

Volcanic Glass (predominantly SiO2)

Carnelian Arrowhead (Silicon Dioxide (Chalcedony variety, SiO2)) — gemstone

Carnelian Arrowhead

Silicon Dioxide (Chalcedony variety, SiO2)

Chalcedony (likely blue agate) knapped into an arrowhead (Microcrystalline quartz, SiO₂ (chalcedony)) — mineral

Chalcedony (likely blue agate) knapped into an arrowhead

Microcrystalline quartz, SiO₂ (chalcedony)

Chert Arrowhead (Jasper) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert Arrowhead (Jasper)

Chert (Cryptocrystalline Quartz, SiO2)

Chert Arrowhead (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert Arrowhead

Cryptocrystalline Quartz (SiO2)

Chert (Arrowhead) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowhead)

Microcrystalline Quartz (SiO2)

Chert or fine-grained slate-like stone (Microcrystalline quartz (SiO₂), possibly siliceous shale or slate) — sedimentary

Chert or fine-grained slate-like stone

Microcrystalline quartz (SiO₂), possibly siliceous shale or slate

Carved red jasper bead (likely ceramic imitation) (Jasper, microcrystalline quartz (SiO₂); exact material uncertain from the image) — mineral

Carved red jasper bead (likely ceramic imitation)

Jasper, microcrystalline quartz (SiO₂); exact material uncertain from the image

Chert Arrowhead (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert Arrowhead

Cryptocrystalline Quartz (SiO2)

Pitted Sedimentary Rock / Cupstone (Sedimentary rock with weathering pit (arenite / sandstone)) — sedimentary

Pitted Sedimentary Rock / Cupstone

Sedimentary rock with weathering pit (arenite / sandstone)

Chert Arrowhead (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Arrowhead

Microcrystalline Quartz (SiO2)

Chert (Flint) (Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (Flint)

Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)

Chert (Flint/Jasper) (Silicon dioxide (SiO2) - Microcrystalline quartz) — sedimentary

Chert (Flint/Jasper)

Silicon dioxide (SiO2) - Microcrystalline quartz

Chert (Arrowhead Artifact) (Chert (SiO2)) — sedimentary

Chert (Arrowhead Artifact)

Chert (SiO2)

Quartzite Arrowhead (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite Arrowhead

Quartzite (SiO2 silicon dioxide)

Quartzite Arrowhead (Archaeological Lithic) (Recrystallized Quartz (SiO2)) — metamorphic

Quartzite Arrowhead (Archaeological Lithic)

Recrystallized Quartz (SiO2)

Chert Arrowhead (Lithic Artifact) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Arrowhead (Lithic Artifact)

Microcrystalline Quartz (SiO2)

Flint Arrowhead (Cryptocrystalline quartz (Chert/Flint, SiO2)) — sedimentary

Flint Arrowhead

Cryptocrystalline quartz (Chert/Flint, SiO2)

Chert Arrowhead (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Arrowhead

Microcrystalline Quartz (SiO2)

Chert (specifically Banded Chert or Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Banded Chert or Flint)

Microcrystalline Quartz (SiO2)

Chert (Yellow Jasper/Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow Jasper/Flint)

Silicon Dioxide (SiO2)

Chert (Yellow or Tan Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow or Tan Chert)

Silicon Dioxide (SiO2)

Chert (variously known as Flint or Microcrystalline Quartz) (Silicon dioxide (SiO2)) — sedimentary

Chert (variously known as Flint or Microcrystalline Quartz)

Silicon dioxide (SiO2)

Chert (Arrowhead/Tool Grade) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowhead/Tool Grade)

Microcrystalline Quartz (SiO2)

Chert (Arrowhead or Flake) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Arrowhead or Flake)

Microcrystalline quartz (SiO2)

Chert (likely a weathered flake) (Microcrystalline quartz (SiO₂); chert) — sedimentary

Chert (likely a weathered flake)

Microcrystalline quartz (SiO₂); chert

Quartzite Lithic Fragment (Possible Arrowhead Tip / Flaked Tool Fragment) (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Lithic Fragment (Possible Arrowhead Tip / Flaked Tool Fragment)

Metamorphic Quartzite (SiO2)

Chert (Chalky Flint Node) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

Chert (often called Flint or River Stone) (Microcrystalline alpha-quartz (SiO2)) — sedimentary

Chert (often called Flint or River Stone)

Microcrystalline alpha-quartz (SiO2)

Chert (within Limestone) (Silicon Dioxide (SiO2)) — sedimentary

Chert (within Limestone)

Silicon Dioxide (SiO2)

Flint or chert artifact (Microcrystalline quartz (SiO₂), likely worked flint/chert) — sedimentary

Flint or chert artifact

Microcrystalline quartz (SiO₂), likely worked flint/chert

Chert (Arrowhead artifact) (Chert (Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (Arrowhead artifact)

Chert (Cryptocrystalline Silica, SiO2)

Chert (Lithic Artifact) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Lithic Artifact)

Microcrystalline Quartz (SiO2)

Quartzite (Lithic Artifact) (Quartzite (SiO2)) — metamorphic

Quartzite (Lithic Artifact)

Quartzite (SiO2)

Chert (Arrowhead Artifact) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowhead Artifact)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Spherical sandstone concretion (Sandstone concretion, commonly quartz-rich arenite cemented by calcite, silica, or iron oxides) — sedimentary

Spherical sandstone concretion

Sandstone concretion, commonly quartz-rich arenite cemented by calcite, silica, or iron oxides

Note: Item is not a geological specimen (Guitar Components (Steel, Nickel, Plastic, Wood)) — Synthetic/Consumer Product

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

Synthetic/Consumer Product

Chert (Arrowhead) (Chert (SiO2)) — sedimentary

Chert (Arrowhead)

Chert (SiO2)

Chert / Flint Arrowheads and Artifacts (Cryptocrystalline quartz (SiO2)) — sedimentary

Chert / Flint Arrowheads and Artifacts

Cryptocrystalline quartz (SiO2)