Rock Identifier

Category

Not A Natural Rock

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

Learn about Not A Natural Rock in the encyclopedia

Asphalt Rock

Rock Gypsum

Coral Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Chalk

Obsidian

Baddeleyite

Cataclasite

Anorthosite

Kimberlite

Quartz Druzy (Crystalline Silicon Dioxide (SiO2)) — mineral

Quartz Druzy

Crystalline Silicon Dioxide (SiO2)

Sandstone Pebble (Arenite (Sandstone)) — sedimentary

Sandstone Pebble

Arenite (Sandstone)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Quartz (Milky Quartz / Clear Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz / Clear Quartz)

Silicon Dioxide (SiO2)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Basalt (Vesicular) (Vesicular Basalt) — igneous

Basalt (Vesicular)

Vesicular Basalt

Shale (Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)) — sedimentary

Shale

Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)

Travertine / Tufa (Calcium Carbonate (CaCO3)) — sedimentary

Travertine / Tufa

Calcium Carbonate (CaCO3)

Shale (Fissile mudstone (Shale)) — sedimentary

Shale

Fissile mudstone (Shale)

Grey River Pebble (Greywacke / Basalt) (Stream-rounded silicate rock pebble) — sedimentary

Grey River Pebble (Greywacke / Basalt)

Stream-rounded silicate rock pebble

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

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

Chert / Flint Nodule

Cryptocrystalline quartz (SiO2)

Smoky Quartz and Chalcedony Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz and Chalcedony Geode Fragment

Silicon Dioxide (SiO2)

Quartz Geode with Calcite/Siderite (Crystalline Silicon Dioxide (SiO2) with Carbonate inclusions) — mineral

Quartz Geode with Calcite/Siderite

Crystalline Silicon Dioxide (SiO2) with Carbonate inclusions

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Turquoise (Dyed Howlite/Magnesite) (CuAl6(PO4)4(OH)8·4H2O (Natural Turquoise) or Ca2B5SiO9(OH)5 (Howlite)) — mineral

Turquoise (Dyed Howlite/Magnesite)

CuAl6(PO4)4(OH)8·4H2O (Natural Turquoise) or Ca2B5SiO9(OH)5 (Howlite)

Clear Quartz (Cut/Faceted Gemstone) (Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Cut/Faceted Gemstone)

Silicon Dioxide (SiO2)

Tektite (Natural impact glass) — meteorite

Tektite

Natural impact glass

Sandstone pebble (Sandstone (SiO2 with iron oxides)) — sedimentary

Sandstone pebble

Sandstone (SiO2 with iron oxides)

Vesicular Basalt (or Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (or Scoria)

Vesicular Basalt

Travertine (Calcium Carbonate (CaCO3)) — sedimentary

Travertine

Calcium Carbonate (CaCO3)

Shale (Clastic sedimentary rock (primarily clay and silt minerals)) — sedimentary

Shale

Clastic sedimentary rock (primarily clay and silt minerals)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (primarily Quartz-rich)) — sedimentary

Sandstone

Arenite (primarily Quartz-rich)

Shale with Iron Staining (Fissile Argillaceous Sedimentary Rock) — sedimentary

Shale with Iron Staining

Fissile Argillaceous Sedimentary Rock

Mica Schist (Mica Schist (Complex Silicate Rock)) — metamorphic

Mica Schist

Mica Schist (Complex Silicate Rock)

Quartz pebble (Agate / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz pebble (Agate / Chalcedony)

Silicon Dioxide (SiO2)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Quartzite Pebble (Quartzite) — metamorphic

Quartzite Pebble

Quartzite

Sandstone Pebble (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

Red Sandstone (Sandstone (Quartz Arenite / Arkose with Hematite cement)) — sedimentary

Red Sandstone

Sandstone (Quartz Arenite / Arkose with Hematite cement)

Chert Concretion (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert Concretion (Flint)

Silicon Dioxide (SiO2)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Sandstone (Quartz-rich) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartz-rich)

Arenite (primarily SiO2)

Quartzite Pebble (Metamorphic Quartz-rich Rock) — metamorphic

Quartzite Pebble

Metamorphic Quartz-rich Rock

Pumice (Volcanic glass / Pumiceous rock) — igneous

Pumice

Volcanic glass / Pumiceous rock

Flagstone (Sedimentary Sandstone / Flagstone) — sedimentary

Flagstone

Sedimentary Sandstone / Flagstone

Earth (Terra / Earth) — igneous, sedimentary, and metamorphic

Earth

Terra / Earth

igneous, sedimentary, and metamorphic

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

Pitted Sedimentary Rock / Cupstone

Sedimentary rock with weathering pit (arenite / sandstone)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)