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

Shale with Quartz Veins (Fissile Sedimentary Rock (SiO2)) — sedimentary

Shale with Quartz Veins

Fissile Sedimentary Rock (SiO2)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Quartz Veined Quartzite or Sandstone (Quartzite with Quartz Veins (SiO2)) — sedimentary

Quartz Veined Quartzite or Sandstone

Quartzite with Quartz Veins (SiO2)

Porphyritic Basalt (Porphyry pebble) (Porphyritic Basalt / Amygdaloidal Basalt) — igneous

Porphyritic Basalt (Porphyry pebble)

Porphyritic Basalt / Amygdaloidal Basalt

Bandit Heart Pebble (Quartz-Veined Sedimentary Rock) (Quartz-veined siltstone or sandstone) — sedimentary

Bandit Heart Pebble (Quartz-Veined Sedimentary Rock)

Quartz-veined siltstone or sandstone

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

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

Banded Agate (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Banded Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Tumbled Stone (Silicon dioxide / Various silicates) — mineral

Tumbled Stone

Silicon dioxide / Various silicates

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Painted Garden Rock (Coated Siltstone or Mudstone) — sedimentary

Painted Garden Rock

Coated Siltstone or Mudstone

Kimberlite (Kimberlite (Potassic ultramafic volcanic rock)) — igneous

Kimberlite

Kimberlite (Potassic ultramafic volcanic rock)

Black Beach Pebble / Basalt Pebble (Basalt / Mafic Volcanic Rock) — igneous

Black Beach Pebble / Basalt Pebble

Basalt / Mafic Volcanic Rock

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

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Sandstone (Ferruginous) (Arenite with Iron Oxide cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

River Rock (Siliciclastic rock (water-worn pebble)) — sedimentary

River Rock

Siliciclastic rock (water-worn pebble)

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

Basalt Pebble

Basalt (Mafic Extrusive Igneous Rock)

Sandstone (Sandstone (clastic sedimentary rock)) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock)

Tektite (Impactite (Natural Silicate Glass)) — meteorite

Tektite

Impactite (Natural Silicate Glass)

Dyed Agate (Tumbled) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Dyed Agate (Tumbled)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Dyed Agate (Agate (Silicon dioxide)) — Mineral

Dyed Agate

Agate (Silicon dioxide)

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Amethyst (Silicon dioxide (SiO2)) — mineral

Amethyst

Silicon dioxide (SiO2)

River Cobble (Quartzite / Porphyritic Igneous Rock) (Siliceous rock / Water-worn lithic fragment) — igneous

River Cobble (Quartzite / Porphyritic Igneous Rock)

Siliceous rock / Water-worn lithic fragment

Basalt Scoria (Aphanitic basaltic scoria) — igneous

Basalt Scoria

Aphanitic basaltic scoria

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Ferruginous) (Arenite (Fe2O3 stained)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe2O3 stained)

Sandstone (Clastic Sedimentary Rock (primarily Quartz, SiO2)) — sedimentary

Sandstone

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Sandstone (Arenite (clastic sedimentary rock)) — sedimentary

Sandstone

Arenite (clastic sedimentary rock)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

River Cobble (Quartzite) (Meta-orthoquartzite) — metamorphic

River Cobble (Quartzite)

Meta-orthoquartzite

Sandstone (Quartzose) (Sandstone (clastic sedimentary rock, primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Sandstone (clastic sedimentary rock, primarily SiO2)

Sandstone (Water-worn Cobble) (Arenite (SiO2 with CaCO3 or Fe2O3 cement)) — sedimentary

Sandstone (Water-worn Cobble)

Arenite (SiO2 with CaCO3 or Fe2O3 cement)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Sandstone (Sedimentary rock composed mainly of quartz sand) — sedimentary

Sandstone

Sedimentary rock composed mainly of quartz sand

Quartz Pebble / River Siltstone (Silicon Dioxide (SiO2) / Fine-grained Sedimentary Rock) — sedimentary

Quartz Pebble / River Siltstone

Silicon Dioxide (SiO2) / Fine-grained Sedimentary Rock

Concrete (Anthropogenic Conglomerate) — sedimentary

Concrete

Anthropogenic Conglomerate

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Yellow Quartz (Citrine Quartz or Yellow Jasper) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Yellow Quartz (Citrine Quartz or Yellow Jasper)

Silicon Dioxide (SiO2) with iron impurities

Sandstone (Sandstone (clastic sedimentary rock)) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock)

Shale or Mudstone (Argillaceous sedimentary rock) — sedimentary

Shale or Mudstone

Argillaceous sedimentary rock

Sandstone (Sedimentary Rock (Quartz arenite / Lithic sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite / Lithic sandstone)