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

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

Sandstone

Arenite (primarily Quartz-based)

Sandstone (Arenite (clastic sedimentary rock)) — sedimentary

Sandstone

Arenite (clastic sedimentary rock)

Sandstone (Arenite (Sandstone)) — sedimentary

Sandstone

Arenite (Sandstone)

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

Sandstone

Arenite (composed primarily of SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

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

Sandstone (Picture Sandstone)

Arenite (primarily SiO2)

Sandstone (Arenite (Sedimentary rock composed of sand-sized grains)) — sedimentary

Sandstone

Arenite (Sedimentary rock composed of sand-sized grains)

Sandstone (Arenite (often composed of Quartz, SiO2)) — sedimentary

Sandstone

Arenite (often composed of Quartz, SiO2)

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

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Quartzite Pebbler (Quartzite (SiO2)) — metamorphic

Quartzite Pebbler

Quartzite (SiO2)

Sandstone (with concrete/human-made layer) (Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)) — sedimentary

Sandstone (with concrete/human-made layer)

Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)

Pale blue-gray quartz-rich pebble (tentative) (Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment) — mineral

Pale blue-gray quartz-rich pebble (tentative)

Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment

Jasper (Silicon dioxide (Microcrystalline quartz, SiO2)) — mineral

Jasper

Silicon dioxide (Microcrystalline quartz, SiO2)

Quartz Pebble (with Hematite/Feldspar Inclusions) (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble (with Hematite/Feldspar Inclusions)

Silicon Dioxide (SiO2)

Sandstone (Sandstone (SiO2-dominated clastic rock)) — sedimentary

Sandstone

Sandstone (SiO2-dominated clastic rock)

Sandstone (Arenite (Clastic Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Clastic Sedimentary Rock)

Painted Pet Rock (Quartzite/Sandstone base) (Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments) — sedimentary

Painted Pet Rock (Quartzite/Sandstone base)

Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments

Pink Quartzite (Quartzite (principally Silicon Dioxide, SiO2)) — metamorphic

Pink Quartzite

Quartzite (principally Silicon Dioxide, SiO2)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Gravel / Small Pebble (Rock Fragment (Gravel)) — sedimentary

Gravel / Small Pebble

Rock Fragment (Gravel)

Granite Cobble (Granite (Phaneritic igneous rock)) — igneous

Granite Cobble

Granite (Phaneritic igneous rock)

Shale (with Iron Staining) (Argillaceous mudstone / Shale) — sedimentary

Shale (with Iron Staining)

Argillaceous mudstone / Shale

Serpentinite (often called Jade or Nephrite substitute) (Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)) — metamorphic

Serpentinite (often called Jade or Nephrite substitute)

Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)

Fossil Snail (Gastropoda fossil) — fossil

Fossil Snail

Gastropoda fossil

Red Sandstone (Arenite (Iron-rich)) — sedimentary

Red Sandstone

Arenite (Iron-rich)

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Black Obsidian (Volcanic Glass (SiO2 with impurities)) — igneous

Black Obsidian

Volcanic Glass (SiO2 with impurities)

Vuggy Quartz on Matrix (Silicon Dioxide (SiO2)) — mineral

Vuggy Quartz on Matrix

Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Granite Pebble (Felsic Igneous Rock (Granitic composition)) — igneous

Granite Pebble

Felsic Igneous Rock (Granitic composition)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Black Tourmaline (Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)) — mineral

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Sandstone (Arenite) — Sedimentary

Sandstone

Arenite

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Gravel and Sand Aggregate (Unconsolidated Clastic Sediment) — sedimentary

Gravel and Sand Aggregate

Unconsolidated Clastic Sediment

Popcorn (Zea mays everta (P. Wilson) (Botanical name for the corn variety)) — Organic/Biogenic

Popcorn

Zea mays everta (P. Wilson) (Botanical name for the corn variety)

Organic/Biogenic

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Basalt (Crushed Stone Aggregate) (Mafic Volcanic Basalt (Major Minerals: Plagioclase Feldspar, Pyroxene, Olivine)) — igneous

Basalt (Crushed Stone Aggregate)

Mafic Volcanic Basalt (Major Minerals: Plagioclase Feldspar, Pyroxene, Olivine)