Rock Identifier

Category

Not A Rock (Synthetic Material)

Browse not a rock (synthetic material) specimens identified by the Rock Identifier community.

Learn about Not A Rock (Synthetic Material) in the encyclopedia

Dunite

Metarhyolite

Limonite

Rock Salt

Coral Rock

Rock Gypsum

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zincite

Opalite

Granite Cobble (Phaneritic Felsic Intrusive Rock (Granite)) — igneous

Granite Cobble

Phaneritic Felsic Intrusive Rock (Granite)

Granodiorite (Granodiorite (Na,Ca)(Si,Al)4O8) — igneous

Granodiorite

Granodiorite (Na,Ca)(Si,Al)4O8

Conglomerate (Conglomerate (clastic sedimentary rock type)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock type)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Greenschist (or Serpentinite with Manganese Dendrites) (Greenschist facies metamorphic rock) — metamorphic

Greenschist (or Serpentinite with Manganese Dendrites)

Greenschist facies metamorphic rock

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Basalt Pebble (Mafic Igneous Rock (Basalt)) — igneous

Basalt Pebble

Mafic Igneous Rock (Basalt)

Granite (Phaneritic plutonic felsic rock) — igneous

Granite

Phaneritic plutonic felsic rock

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Conglomerate (Conglomerate (Detrital sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Detrital sedimentary rock)

Diorite (River Pebble) (Intermediate plutonic igneous rock) — igneous

Diorite (River Pebble)

Intermediate plutonic igneous rock

Andesite (Andesite (intermediate volcanic rock)) — igneous

Andesite

Andesite (intermediate volcanic rock)

Diorite (Intermediate plutonic igneous rock) — Igneous

Diorite

Intermediate plutonic igneous rock

Petrified Wood (Silicified Wood (SiO2)) — mineral

Petrified Wood

Silicified Wood (SiO2)

Bauxite (Aluminum ore (mixture of gibbsite Al(OH)3, boehmite γ-AlO(OH), and diaspore α-AlO(OH))) — sedimentary

Bauxite

Aluminum ore (mixture of gibbsite Al(OH)3, boehmite γ-AlO(OH), and diaspore α-AlO(OH))

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Green Quartzite (with Fuchsite) (Quartzite with Muscovite variety Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Quartzite (with Fuchsite)

Quartzite with Muscovite variety Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Chrysocolla in Jasper (Chryso-Jasper) (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)) — mineral

Chrysocolla in Jasper (Chryso-Jasper)

Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)

Quartz (or Chert/Flint) (Silicon Dioxide (SiO2)) — mineral

Quartz (or Chert/Flint)

Silicon Dioxide (SiO2)

Quartz geode (Microcrystalline quartz and drusy quartz (SiO₂), commonly lining a chalcedony-rich cavity) — mineral

Quartz geode

Microcrystalline quartz and drusy quartz (SiO₂), commonly lining a chalcedony-rich cavity

Marble (Metamorphic carbonate rock (Calcite/Dolomite)) — metamorphic

Marble

Metamorphic carbonate rock (Calcite/Dolomite)

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

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

Quartzite in Conglomerate (Clastic Sedimentary Rock with Silicon Dioxide (SiO2) inclusions) — sedimentary

Quartzite in Conglomerate

Clastic Sedimentary Rock with Silicon Dioxide (SiO2) inclusions

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

Obsidian (Apache Tear)

Amorphous Volcanic Glass (SiO2)

Shale (Shale (Consolidated fine-grained clay/silt)) — sedimentary

Shale

Shale (Consolidated fine-grained clay/silt)

Limestone (specifically Chalky Limestone) (Calcium Carbonate (CaCO3 / Calcite)) — sedimentary

Limestone (specifically Chalky Limestone)

Calcium Carbonate (CaCO3 / Calcite)

Fossiliferous Limestone (Coquina / Shell Conglomerate) (Bioclastic Limestone (composed primarily of CaCO3)) — sedimentary

Fossiliferous Limestone (Coquina / Shell Conglomerate)

Bioclastic Limestone (composed primarily of CaCO3)

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)

Iron-stained quartzite or chert (Quartzite, predominantly SiO₂, with iron-oxide staining) — metamorphic

Iron-stained quartzite or chert

Quartzite, predominantly SiO₂, with iron-oxide staining

Iron Slag (Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)) — Anthropogenic (Man-made industrial byproduct)

Iron Slag

Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)

Anthropogenic (Man-made industrial byproduct)

Siltstone (Siltstone (Detrital Clastic Sedimentary Rock)) — sedimentary

Siltstone

Siltstone (Detrital Clastic Sedimentary Rock)

Diorite (Diorite (Intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (Intermediate intrusive igneous rock)

Granite Gneiss (Gneiss (high-grade metamorphic rock)) — metamorphic

Granite Gneiss

Gneiss (high-grade metamorphic rock)

Quartz Conglomerate (Quartz Conglomerate (clastic sedimentary rock)) — sedimentary

Quartz Conglomerate

Quartz Conglomerate (clastic sedimentary rock)

Granite (Phaneritic Acidic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Acidic Igneous Rock (Granite)

Pink-and-gray quartz-rich pegmatite, possibly rose quartz with feldspar (Quartz (SiO₂) with K-feldspar/plagioclase; likely pegmatitic granite) — igneous

Pink-and-gray quartz-rich pegmatite, possibly rose quartz with feldspar

Quartz (SiO₂) with K-feldspar/plagioclase; likely pegmatitic granite

Granite Pebble with Quartz/Feldspar Vein (Intrusive Felsic Igneous Rock (Granite)) — igneous

Granite Pebble with Quartz/Feldspar Vein

Intrusive Felsic Igneous Rock (Granite)

Crushed Stone (Likely Granite or Diabase) (Intrusive Igneous Rock (Granitoid/Gabbroid)) — igneous

Crushed Stone (Likely Granite or Diabase)

Intrusive Igneous Rock (Granitoid/Gabbroid)

Quartz / Quartzite (Quartzite (primarily Silicon Dioxide, SiO2)) — metamorphic

Quartz / Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Sandstone (likely Fossiliferous Sandstone) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (likely Fossiliferous Sandstone)

Clastic sedimentary rock (primarily SiO2)

Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)