Rock Identifier

Category

Not A Rock

Browse not a rock specimens identified by the Rock Identifier community.

Learn about Not A Rock in the encyclopedia

Rock Gypsum

Rock Gypsum

Rock Salt

Rock Salt

Coral Rock

Coral Rock

Asphalt Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Cataclasite

Cataclasite

Anorthosite

Anorthosite

Gondite

Gondite

Peridotite

Peridotite

Epidosite

Epidosite

Phosphorite

Phosphorite

Granite Pebble (Granite (Phaneritic igneous rock composed of Quartz, Feldspar, and Mica)) — igneous

Granite Pebble

Granite (Phaneritic igneous rock composed of Quartz, Feldspar, and Mica)

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Granite (Granite (Phaneritic intrusive igneous rock)) — igneous

Granite

Granite (Phaneritic intrusive igneous rock)

Glauconite (Glauconitic Sandstone) (Glauconite [(K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2]) — sedimentary

Glauconite (Glauconitic Sandstone)

Glauconite [(K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2]

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Faceted Clear Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Faceted Clear Quartz

Crystalline Silicon Dioxide (SiO2)

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt (with possible Serpentinization) (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible Serpentinization)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (Aphanitic Mafic Volcanic Rock (Fe/Mg rich)) — igneous

Basalt

Aphanitic Mafic Volcanic Rock (Fe/Mg rich)

Basalt River Pebble (Basalt) — igneous

Basalt River Pebble

Basalt

Basalt (Vesicular) (Basalt) — igneous

Basalt (Vesicular)

Basalt

Siltstone (Siltstone (composed of microscopic quartz and clay minerals)) — sedimentary

Siltstone

Siltstone (composed of microscopic quartz and clay minerals)

Granitoid (Granite/Gneiss mix) (Granite or Granitic Gneiss (Silicon dioxide SiO2 with Al, K, Na silicates)) — igneous/metamorphic

Granitoid (Granite/Gneiss mix)

Granite or Granitic Gneiss (Silicon dioxide SiO2 with Al, K, Na silicates)

igneous/metamorphic

Sandstone Cobble (Arenite (primarily Quartz Arenite)) — sedimentary

Sandstone Cobble

Arenite (primarily Quartz Arenite)

Serpentine (Serpentine-group (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4) — metamorphic

Serpentine

Serpentine-group (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Variscite (or potentially a turquoise/variscite matrix cabochon, or an impression jasper) (AlPO4·2H2O (Variscite) or related phosphate/silicate material depending on exact composition) — Mineral

Variscite (or potentially a turquoise/variscite matrix cabochon, or an impression jasper)

AlPO4·2H2O (Variscite) or related phosphate/silicate material depending on exact composition

Basalt (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Granite with Epidote (Granite, containing quartz, feldspar, and epidote) — Igneous

Granite with Epidote

Granite, containing quartz, feldspar, and epidote

Granite (Granite (Phaneritic Quartz-Feldspar Plutonic Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Plutonic Rock)

Peridotite (with Olivine) (Peridotite (dominantly (Mg, Fe)2SiO4)) — igneous

Peridotite (with Olivine)

Peridotite (dominantly (Mg, Fe)2SiO4)

Basalt (Basalt (dominated by plagioclase feldspar and pyroxene)) — igneous

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Basalt (Basalt (principally Plagioclase Feldspar and Pyroxene)) — igneous

Basalt

Basalt (principally Plagioclase Feldspar and Pyroxene)

Gray Basalt Cobble (Basalt) — igneous

Gray Basalt Cobble

Basalt

Clear Quartz (Silicon dioxide (SiO2)) — mineral

Clear Quartz

Silicon dioxide (SiO2)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Basalt with vesicles (Vesicular Basalt) — igneous

Basalt with vesicles

Vesicular Basalt

Basalt (Basalt (primarily Plagioclase feldspar and Pyroxene)) — igneous

Basalt

Basalt (primarily Plagioclase feldspar and Pyroxene)

Basalt (Basalt) — igneous

Basalt

Basalt

Quartzite Cobble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Cobble

Quartzite (primarily SiO2)

Basalt (with possible iron oxide staining) (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible iron oxide staining)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt with Calcite Veins (Aphanitic mafic volcanic rock with CaCO3 inclusions) — igneous

Basalt with Calcite Veins

Aphanitic mafic volcanic rock with CaCO3 inclusions

Granite (Granite) — Igneous

Granite

Granite

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt pebble (Basalt) — igneous

Basalt pebble

Basalt

Granitic Pegmatite (Granite (with coarse-grained Quartz, Feldspar, and Mica components)) — igneous

Granitic Pegmatite

Granite (with coarse-grained Quartz, Feldspar, and Mica components)

Basalt (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Basalt (River Stone) (Basalt) — igneous

Basalt (River Stone)

Basalt

Unakite (Epidote-Rich Granite) (Unakite (Granite consisting of Orthoclase, Quartz, and Epidote)) — metamorphic

Unakite (Epidote-Rich Granite)

Unakite (Granite consisting of Orthoclase, Quartz, and Epidote)

Basalt River Cobble (Basalt) — igneous

Basalt River Cobble

Basalt