Rock Identifier

Category

Igneous Rock

Browse igneous rock specimens identified by the Rock Identifier community.

Learn about Igneous Rock in the encyclopedia

Carbonatite

Carbonatite

Rock Gypsum

Rock Gypsum

Rock Salt

Rock Salt

Coral Rock

Coral Rock

Asphalt Rock

Asphalt Rock

Pyroxenite

Pyroxenite

Basalt

Basalt

Diorite

Diorite

Kimberlite

Kimberlite

Norite

Norite

Troctolite

Troctolite

Gabbro

Gabbro

Riverstone (likely Basalt or Greywacke) (Extrusive Magmatic Basalt) — igneous

Riverstone (likely Basalt or Greywacke)

Extrusive Magmatic Basalt

Basalt (Weathered Pebble) (Extrusive mafic rock (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Basalt (Weathered Pebble)

Extrusive mafic rock (primarily Plagioclase Feldspar and Pyroxene)

Basalt (Water-worn Pebble) (Basalt) — igneous

Basalt (Water-worn Pebble)

Basalt

Colorless Quartz (Rhinestone) (Silicon Dioxide (SiO2)) — mineral

Colorless Quartz (Rhinestone)

Silicon Dioxide (SiO2)

Amygdaloidal Basalt with Epidote (Amygdaloidal Basalt (Mafic volcanic rock)) — igneous

Amygdaloidal Basalt with Epidote

Amygdaloidal Basalt (Mafic volcanic rock)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartz with Chalcopyrite and Pyrite (Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)) — mineral

Quartz with Chalcopyrite and Pyrite

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Sunstone (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — Mineral

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Quartz (Milky or Druzy Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

Red Scoria (Lava Rock) (Scoria (Vesicular Basalt/Andesite)) — igneous

Red Scoria (Lava Rock)

Scoria (Vesicular Basalt/Andesite)

Scoria (Lava Rock) (Vesicular Basalt / Scoria) — Igneous

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Scoria (Lava Rock) (Mafic extrusive volcanic rock (Scientific formula varies based on mineral content: primarily SiO2, MgO, and FeO)) — igneous

Scoria (Lava Rock)

Mafic extrusive volcanic rock (Scientific formula varies based on mineral content: primarily SiO2, MgO, and FeO)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Olivine Diabase (Microgabbro) (Diabase or Dolerite with Olivine) — igneous

Olivine Diabase (Microgabbro)

Diabase or Dolerite with Olivine

Basalt Porphyry (Porphyritic Basalt) — igneous

Basalt Porphyry

Porphyritic Basalt

Obsidian (Amorphous Volcanic Glass (primarily SiO2)) — igneous

Obsidian

Amorphous Volcanic Glass (primarily SiO2)

Basalt (Basalt (containing Pyroxene, Plagioclase Feldspar, and Olivine)) — igneous

Basalt

Basalt (containing Pyroxene, Plagioclase Feldspar, and Olivine)

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt (Porphyritic) (Porphyritic Basalt) — igneous

Basalt (Porphyritic)

Porphyritic Basalt

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt (Basalt) — igneous

Basalt

Basalt

Granite (Granite (Mainly SiO2 and Al2O3)) — igneous

Granite

Granite (Mainly SiO2 and Al2O3)

Pumice (Pumice (Vesicular Rhyolite/Andesite)) — igneous

Pumice

Pumice (Vesicular Rhyolite/Andesite)

Schist (Crystalline Metamorphic Rock (Schistose)) — metamorphic

Schist

Crystalline Metamorphic Rock (Schistose)

Vesicular Basalt (Basalt) — igneous

Vesicular Basalt

Basalt

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

Gneiss

Gneiss (High-grade metamorphic rock)

Granite Gneiss (Felsic Gneiss) — metamorphic

Granite Gneiss

Felsic Gneiss

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

Gneiss

Gneiss (High-grade metamorphic rock)

Greenstone / River Jadeite pebble (Metavolcanic rock / Chlorite or Actinolite-rich schist) — metamorphic

Greenstone / River Jadeite pebble

Metavolcanic rock / Chlorite or Actinolite-rich schist

Clear Quartz (Druzy/Crystal Cluster) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Druzy/Crystal Cluster)

Silicon Dioxide (SiO2)

Smoky Quartz (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Black Tourmaline (Schorl) (Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Black Tourmaline (Schorl)

Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4

Milky Quartz Cobble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Cobble

Quartz (Silicon Dioxide, SiO2)

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

Quartz

Quartz (Silicon Dioxide, SiO2)

Yellow Aventurine (Quartz (SiO2) with inclusions) — mineral

Yellow Aventurine

Quartz (SiO2) with inclusions

Gneiss (Gneissic Granite) (Gneiss) — metamorphic

Gneiss (Gneissic Granite)

Gneiss

Agate (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Dyed Agate Geode (Pink/Magenta) (Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz) — mineral

Dyed Agate Geode (Pink/Magenta)

Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz

Carnelian Agate (with Quartz/Chalcedony) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Carnelian Agate (with Quartz/Chalcedony)

Silicon Dioxide (SiO2) - Microcrystalline Quartz