Rock Identifier

Category

This Is Not A Rock Or Mineral

Browse this is not a rock or mineral specimens identified by the Rock Identifier community.

Learn about This Is Not A Rock Or Mineral in the encyclopedia

Claystone

Shale

Rock Salt

Rock Gypsum

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Albite

Talc-carbonate Rock

Talc-carbonate Rock

Potassium Feldspar

Potassium Feldspar

Halite

Dolomite

Schist (Schist (Foliated Metamorphic Rock)) — metamorphic

Schist

Schist (Foliated Metamorphic Rock)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Sandstone with Mineral Veining or Crust (Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)) — sedimentary

Sandstone with Mineral Veining or Crust

Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)

Massive Quartz (Milky or Gray) (Silicon Dioxide (SiO2)) — mineral

Massive Quartz (Milky or Gray)

Silicon Dioxide (SiO2)

Agate Geode with Quartz Druzy (Chalcedony (SiO2) and Quartz (SiO2)) — mineral

Agate Geode with Quartz Druzy

Chalcedony (SiO2) and Quartz (SiO2)

Granite Pebble (Intrusive Igneous Rock) — igneous

Granite Pebble

Intrusive Igneous Rock

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Small brown-gray mineral fragment (Indeterminate; possibly weathered quartz-, feldspar-, or iron-oxide-bearing rock) — mineral

Small brown-gray mineral fragment

Indeterminate; possibly weathered quartz-, feldspar-, or iron-oxide-bearing rock

Sandstone (with Limonite staining) (Arenite (primarily SiO2 with FeO(OH)·nH2O)) — sedimentary

Sandstone (with Limonite staining)

Arenite (primarily SiO2 with FeO(OH)·nH2O)

Amygdaloidal Basalt (Amygdaloidal Mafic Volcanic Rock) — igneous

Amygdaloidal Basalt

Amygdaloidal Mafic Volcanic Rock

Granite (Intrusive igneous rock) — igneous

Granite

Intrusive igneous rock

Shale (Shale (Lutite)) — sedimentary

Shale

Shale (Lutite)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Emerald (or possibly Green Glass / Slag) (Beryl (Be3Al2(SiO3)6)) — gemstone

Emerald (or possibly Green Glass / Slag)

Beryl (Be3Al2(SiO3)6)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Sandstone Pebble (Arenite (SiO2 based)) — sedimentary

Sandstone Pebble

Arenite (SiO2 based)

Sandstone Pebble (Arenite (SiO2 complex)) — sedimentary

Sandstone Pebble

Arenite (SiO2 complex)

Jasper and Agate Mix (Silicon dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper and Agate Mix

Silicon dioxide (SiO2) - Microcrystalline Quartz

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Sandstone (Wonderstone) (Arenite (composed primarily of SiO2 with Fe2O3 impurities)) — sedimentary

Sandstone (Wonderstone)

Arenite (composed primarily of SiO2 with Fe2O3 impurities)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)

Sandstone (Banded Sandstone) (Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)) — sedimentary

Sandstone (Banded Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)

Gneiss with Quartz Veining (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss with Quartz Veining

Gneiss (High-grade Metamorphic Rock)

Fossil Coral (Rugose Coral or Tabulate Coral (Phylum Cnidaria)) — fossil

Fossil Coral

Rugose Coral or Tabulate Coral (Phylum Cnidaria)

Shark Tooth Fossil (Chondrichthyes (class) fossilized tooth) — fossil

Shark Tooth Fossil

Chondrichthyes (class) fossilized tooth

Agate Geode (Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety) — Mineral

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety

Quartz-lined Geode / Chalcedony Nodule (Silicon Dioxide (SiO2)) — sedimentary

Quartz-lined Geode / Chalcedony Nodule

Silicon Dioxide (SiO2)

Possible fossilized shell or coral fragment (Indeterminate biogenic carbonate, likely calcite (CaCO₃)) — fossil

Possible fossilized shell or coral fragment

Indeterminate biogenic carbonate, likely calcite (CaCO₃)

Weathered granitic rock fragment (Granite, predominantly quartz–feldspar–mica assemblage) — igneous

Weathered granitic rock fragment

Granite, predominantly quartz–feldspar–mica assemblage

Clear Quartz (Faceted) (Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Faceted)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Banded Rock (likely Quartz-rich) (Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals) — Mineral

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Quartzite Cobble / Quartz River Pebble (Silicon Dioxide (SiO2) - Quartzite / Quartz) — metamorphic

Quartzite Cobble / Quartz River Pebble

Silicon Dioxide (SiO2) - Quartzite / Quartz

Desert Rose (Gypsum Rose) (Gypsum (CaSO4·2H2O) with inclusions of sand) — mineral

Desert Rose (Gypsum Rose)

Gypsum (CaSO4·2H2O) with inclusions of sand

Spinifex Texture Komatiite (Komatiite (Ultramafic Volcanic Rock)) — igneous

Spinifex Texture Komatiite

Komatiite (Ultramafic Volcanic Rock)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Lazulite Quartzite (Quartzite with Lazulite (SiO2 with (Mg,Fe)Al2(PO4)2(OH)2)) — metamorphic

Lazulite Quartzite

Quartzite with Lazulite (SiO2 with (Mg,Fe)Al2(PO4)2(OH)2)

Porphyritic Basalt (Basalt (with plagioclase or k-feldspar phenocrysts)) — igneous

Porphyritic Basalt

Basalt (with plagioclase or k-feldspar phenocrysts)