Rock Identifier

Category

Rock

Browse rock specimens identified by the Rock Identifier community.

Learn about Rock in the encyclopedia

Rock Gypsum

Coral Rock

Asphalt Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Anorthosite

Cataclasite

Peridotite

Phosphorite

Gondite

Dunite

Basalt (River Stone) (Basalt (Mafic volcanic rock)) — igneous

Basalt (River Stone)

Basalt (Mafic volcanic rock)

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Basalt (Vesicular) (Basalt) — igneous

Basalt (Vesicular)

Basalt

Basalt River Cobble (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt River Cobble

Basalt (Aphanitic Mafic Volcanic Rock)

Granite (Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Quartz with Mica (Silicon Dioxide (SiO2) with Phyllosilicates (Mica)) — mineral

Quartz with Mica

Silicon Dioxide (SiO2) with Phyllosilicates (Mica)

Basalt with Quartz Veining (Amygdaloidal Basalt (predominately SiO2 and (Na,Ca)(Si,Al)4O8)) — igneous

Basalt with Quartz Veining

Amygdaloidal Basalt (predominately SiO2 and (Na,Ca)(Si,Al)4O8)

Basalt (Basalt (Mafic Igneous Rock)) — igneous

Basalt

Basalt (Mafic Igneous Rock)

River Stone (Basalt) (Extrusive Igneous Rock (Mafic)) — igneous

River Stone (Basalt)

Extrusive Igneous Rock (Mafic)

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

Granite Pebble

Granite (Phaneritic Igneous Rock)

Basalt Pebble (Extrusive mafic igneous rock) — igneous

Basalt Pebble

Extrusive mafic igneous rock

Porphyritic Andesite (Andesite (Intermediate Volcanic Rock)) — igneous

Porphyritic Andesite

Andesite (Intermediate Volcanic Rock)

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

Basalt (Micromount)

Extrusive Mafic Igneous Rock

Vesicular Basalt (Scoria) (Mafic Igneous Volcanic Rock) — igneous

Vesicular Basalt (Scoria)

Mafic Igneous Volcanic Rock

Basalt River Stone (Basalt (Mafic volcanic rock)) — igneous

Basalt River Stone

Basalt (Mafic volcanic rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt (Basalt (Mafic Volcanic Rock)) — igneous

Basalt

Basalt (Mafic Volcanic Rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Eclogite (Eclogite (Omphacite-Garnet Rock)) — metamorphic

Eclogite

Eclogite (Omphacite-Garnet Rock)

Basalt with minor mineral crusting (Sideromelane / Extrusive Igneous Rock) — igneous

Basalt with minor mineral crusting

Sideromelane / Extrusive Igneous Rock

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Basalt (Basalt (extrusive volcanic rock)) — igneous

Basalt

Basalt (extrusive volcanic rock)

Clear Quartz / Rock Crystal (Silicon Dioxide (SiO2)) — mineral

Clear Quartz / Rock Crystal

Silicon Dioxide (SiO2)

Basalt (River Rock Cobble) (Extrusive mafic volcanic rock (Basalt)) — igneous

Basalt (River Rock Cobble)

Extrusive mafic volcanic rock (Basalt)

Quartz with Mica/Host Rock (Silicon Dioxide (SiO2) with Phyllosilicates) — mineral

Quartz with Mica/Host Rock

Silicon Dioxide (SiO2) with Phyllosilicates

Vesicular Basalt (Lava Rock) (Scoriaceous Basalt) — igneous

Vesicular Basalt (Lava Rock)

Scoriaceous Basalt

Hag Stone (Naturally holed stone (typically sedimentary rock such as flint, limestone, or sandstone)) — Sedimentary

Hag Stone

Naturally holed stone (typically sedimentary rock such as flint, limestone, or sandstone)

Quartz Druzy on Matrix (SiO2) — mineral

Quartz Druzy on Matrix

SiO2

Quartz Veined Mudstone (Metasedimentary rock with Quartz (SiO2) veins) — metamorphic

Quartz Veined Mudstone

Metasedimentary rock with Quartz (SiO2) veins

Wishing Stone (Basalt/Greywacke with Quartz Vein) (Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion) — igneous/sedimentary

Wishing Stone (Basalt/Greywacke with Quartz Vein)

Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion

igneous/sedimentary

Unakite (or Polished Jasper Pebble) (Altered Granite (Epidote-Orthoclase Rock)) — metamorphic

Unakite (or Polished Jasper Pebble)

Altered Granite (Epidote-Orthoclase Rock)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Schist with Schorl (Black Tourmaline) (NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)) — metamorphic

Schist with Schorl (Black Tourmaline)

NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)

Basalt with Quartz Vein (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt with Quartz Vein

Basalt (Mafic Extrusive Igneous Rock)

Scoria (Lava Rock) (Extrusive Igneous Scoria (Vesicular Basalt)) — igneous

Scoria (Lava Rock)

Extrusive Igneous Scoria (Vesicular Basalt)

Sandstone (Pebble) (Sandstone (SiO2 with matrix/cement)) — sedimentary

Sandstone (Pebble)

Sandstone (SiO2 with matrix/cement)

Dalmatian Stone (Dalmatian Stone (formerly called Dalmatian Jasper)) — igneous

Dalmatian Stone

Dalmatian Stone (formerly called Dalmatian Jasper)

Basalt (Basalt (extrusive volcanic rock)) — igneous

Basalt

Basalt (extrusive volcanic rock)