Rock Identifier

Category

Non Geological

Browse non geological specimens identified by the Rock Identifier community.

Fossiliferous Limestone (Coquina / Shell Bed) (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone (Coquina / Shell Bed)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Mahogany Obsidian (Volcanic Glass (predominantly SiO2 with Fe2O3 inclusions)) — igneous

Mahogany Obsidian

Volcanic Glass (predominantly SiO2 with Fe2O3 inclusions)

Amber (Succinite (specifically for Baltic amber; fossilized tree resin)) — Organic (Sedimentary-associated)

Amber

Succinite (specifically for Baltic amber; fossilized tree resin)

Organic (Sedimentary-associated)

Quartzite Pebble (Meta-quartzite) — metamorphic

Quartzite Pebble

Meta-quartzite

Obsidian (Volcanic Glass (Amorphous Silicon Dioxide)) — igneous

Obsidian

Volcanic Glass (Amorphous Silicon Dioxide)

Anthracite Coal (Anthracite (Carbon-rich metamorphic coal)) — metamorphic

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Obsidian (Volcanic glass (SiO2 + impurities)) — igneous

Obsidian

Volcanic glass (SiO2 + impurities)

Amber (Cherry Amber) (Succinite (C10H16O)) — Organic Gemstone

Amber (Cherry Amber)

Succinite (C10H16O)

Organic Gemstone

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Anthracite Coal (Anthracite (Carbon-rich metamorphic rock)) — metamorphic

Anthracite Coal

Anthracite (Carbon-rich metamorphic rock)

Barite (Barium Sulfate (BaSO4)) — mineral

Barite

Barium Sulfate (BaSO4)

Obsidian (Apache Tear) (Amorphous Volcanic Glass (SiO2 + impurities)) — igneous

Obsidian (Apache Tear)

Amorphous Volcanic Glass (SiO2 + impurities)

Anthracite Coal (Anthracite C) — metamorphic

Anthracite Coal

Anthracite C

Apache Tear (Obsidian (Volcanic Glass), SiO2 + MgO, Fe3O4) — igneous

Apache Tear

Obsidian (Volcanic Glass), SiO2 + MgO, Fe3O4

Apache Tear (Obsidian) (Volcanic glass (SiO2 - Silicon Dioxide)) — igneous

Apache Tear (Obsidian)

Volcanic glass (SiO2 - Silicon Dioxide)

Faceted Glass (Costume Jewelry) (Amorphous Silicon Dioxide with colorants (Glass)) — Synthetic/Man-made Material

Faceted Glass (Costume Jewelry)

Amorphous Silicon Dioxide with colorants (Glass)

Synthetic/Man-made Material

Mahogany Obsidian (Volcanic Glass with Hematite/Magnetite inclusions) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions

Breccia (Clastic Breccia (SiO2/CaCO3 dominated)) — sedimentary

Breccia

Clastic Breccia (SiO2/CaCO3 dominated)

Obsidian (Obsidian (Volcanic Glass, SiO2)) — igneous

Obsidian

Obsidian (Volcanic Glass, SiO2)

Tektite (Indochinite) (Tektite (natural glass, SiO2 + Al2O3)) — mineral

Tektite (Indochinite)

Tektite (natural glass, SiO2 + Al2O3)

Note: Item is not a geological specimen (n/a) — none

Note: Item is not a geological specimen

n/a

Marble (Metamorphosed Limestone (principally CaCO3)) — metamorphic

Marble

Metamorphosed Limestone (principally CaCO3)

Quartzite (Metamorphic Rock (Mainly SiO2)) — metamorphic

Quartzite

Metamorphic Rock (Mainly SiO2)

Black Obsidian (Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)) — igneous

Black Obsidian

Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (composed primarily of Quartz, SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of Quartz, SiO2)

Quartzite (Water-Worn) (Quartzite (SiO2)) — metamorphic

Quartzite (Water-Worn)

Quartzite (SiO2)

Tumbled Obsidian (Volcanic Glass (Silicon Dioxide)) — igneous

Tumbled Obsidian

Volcanic Glass (Silicon Dioxide)

Quartzite River Rock (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Rock

Quartzite (primarily SiO2)

Ethiopian Opal (Welo Opal in Matrix) (Hydrated Silica (SiO2·nH2O)) — mineral

Ethiopian Opal (Welo Opal in Matrix)

Hydrated Silica (SiO2·nH2O)

Amber (Succinite (a fossilized organic resin containing succinic acid)) — mineraloid

Amber

Succinite (a fossilized organic resin containing succinic acid)

Chert (variously identified as Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variously identified as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Quartzite (Tumbled Pebble) (Quartzite (primarily SiO2 with hematite inclusions)) — metamorphic

Red Quartzite (Tumbled Pebble)

Quartzite (primarily SiO2 with hematite inclusions)

Mahogany Obsidian (Volcanic Glass (Silicate: SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic Glass (Silicate: SiO2 + Fe2O3)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Amber (Succinite (fossilized tree resin)) — mineral

Amber

Succinite (fossilized tree resin)

Tektite (Tektite (Amorphous silica rich glass)) — mineral

Tektite

Tektite (Amorphous silica rich glass)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Tektite (Indochinite) (Tektite (Amorphous Meteoritic Glass)) — igneous

Tektite (Indochinite)

Tektite (Amorphous Meteoritic Glass)

Quartzite (Yellow/Tan) (Metamorphic Rock composed of Quartz (SiO₂)) — metamorphic

Quartzite (Yellow/Tan)

Metamorphic Rock composed of Quartz (SiO₂)

Snowflake Obsidian (Vitreous volcanic silicate rock (SiO2) with Spherulite inclusions) — igneous

Snowflake Obsidian

Vitreous volcanic silicate rock (SiO2) with Spherulite inclusions

Apache Tear (Obsidian) (Obsidian (Hydrated Amorphous Silica, SiO2 + MgO/Fe3O4)) — igneous

Apache Tear (Obsidian)

Obsidian (Hydrated Amorphous Silica, SiO2 + MgO/Fe3O4)