Rock Identifier

Category

Not A Rock Or Mineral

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

Learn about Not A Rock Or Mineral in the encyclopedia

Claystone

Shale

Rock Salt

Rock Gypsum

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Albite

Potassium Feldspar

Potassium Feldspar

Halite

Dolomite

Weathered granitic rock fragment (Granite, predominantly quartz–feldspar–mica assemblage) — igneous

Weathered granitic rock fragment

Granite, predominantly quartz–feldspar–mica assemblage

Emerald (or possibly Green Glass / Slag) (Beryl (Be3Al2(SiO3)6)) — gemstone

Emerald (or possibly Green Glass / Slag)

Beryl (Be3Al2(SiO3)6)

Granitic Pegmatite (Pegmatitic Granite) — igneous

Granitic Pegmatite

Pegmatitic Granite

Granite (Intrusive igneous felsic rock) — igneous

Granite

Intrusive igneous felsic rock

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Sandstone and River Pebbles (Sedimentary Rock (Sandstone / Quartzite / Chert)) — sedimentary

Sandstone and River Pebbles

Sedimentary Rock (Sandstone / Quartzite / Chert)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Granite (Granite) — Igneous

Granite

Granite

Porphyritic Igneous Rock / Rhyolite Porphyry (Porphyritic volcanic rock) — igneous

Porphyritic Igneous Rock / Rhyolite Porphyry

Porphyritic volcanic rock

Banded Rock (likely Quartz-rich) (Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals) — Mineral

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Quartz-lined Geode / Chalcedony Nodule (Silicon Dioxide (SiO2)) — sedimentary

Quartz-lined Geode / Chalcedony Nodule

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Granite (Intrusive Igneous Rock (Felsic)) — igneous

Granite

Intrusive Igneous Rock (Felsic)

Quartz Geode (Quartz (Silicon Dioxide, SiO2) in a Geode) — sedimentary

Quartz Geode

Quartz (Silicon Dioxide, SiO2) in a Geode

Gneiss with Quartz Veining (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss with Quartz Veining

Gneiss (High-grade Metamorphic Rock)

Sandstone (with Limonite staining) (Arenite (primarily SiO2 with FeO(OH)·nH2O)) — sedimentary

Sandstone (with Limonite staining)

Arenite (primarily SiO2 with FeO(OH)·nH2O)

Schist (Metamorphic Schist) — metamorphic

Schist

Metamorphic Schist

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Schist (Schist (Foliated Metamorphic Rock)) — metamorphic

Schist

Schist (Foliated Metamorphic Rock)

Quartz crystal (Quartz (Silicon dioxide, SiO2)) — mineral

Quartz crystal

Quartz (Silicon dioxide, SiO2)

Clear Quartz (Faceted) (Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Faceted)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Sandstone (Weathered Fragment) (Clastic Sedimentary Rock) — sedimentary

Sandstone (Weathered Fragment)

Clastic Sedimentary Rock

Agate Geode (Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety) — Mineral

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

Serpentine (Antigorite/Lizardite/Chrysotile group, Mg3Si2O5(OH)4) — metamorphic

Serpentine

Antigorite/Lizardite/Chrysotile group, Mg3Si2O5(OH)4

Serpentine (Antigorite/Lizardite (Mg, Fe)3Si2O5(OH)4) — metamorphic

Serpentine

Antigorite/Lizardite (Mg, Fe)3Si2O5(OH)4

Jasper and Agate Mix (Silicon dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper and Agate Mix

Silicon dioxide (SiO2) - Microcrystalline Quartz

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Massive Quartz (Milky or Gray) (Silicon Dioxide (SiO2)) — mineral

Massive Quartz (Milky or Gray)

Silicon Dioxide (SiO2)

Shale (Shale (Lutite)) — sedimentary

Shale

Shale (Lutite)

Tumbled Mixed Gemstones and Rocks (Various mineral species including quartz (SiO2) and silicate minerals) — mineral

Tumbled Mixed Gemstones and Rocks

Various mineral species including quartz (SiO2) and silicate minerals

Sandstone Pebble (Arenite (SiO2 based)) — sedimentary

Sandstone Pebble

Arenite (SiO2 based)

Sandstone Pebble (Arenite (SiO2 complex)) — sedimentary

Sandstone Pebble

Arenite (SiO2 complex)

Agate Geode with Quartz Druzy (Chalcedony (SiO2) and Quartz (SiO2)) — mineral

Agate Geode with Quartz Druzy

Chalcedony (SiO2) and Quartz (SiO2)

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

Sandstone

Sedimentary Rock (Quartz arenite / Lithic sandstone)

Sedimentary River Rock (Siliciclastic Sedimentary Rock (Quartzite or Sandstone pebble)) — sedimentary

Sedimentary River Rock

Siliciclastic Sedimentary Rock (Quartzite or Sandstone pebble)

Rhyolite with Lithophysae and Iron Oxide (Extrusive igneous rock / Felsic volcanic rock) — igneous

Rhyolite with Lithophysae and Iron Oxide

Extrusive igneous rock / Felsic volcanic rock