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

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

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Basalt with Scoria (Mafic Volcanic Rock (Basalt/Scoria)) — igneous

Basalt with Scoria

Mafic Volcanic Rock (Basalt/Scoria)

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

Basalt (River Pebble)

Basalt (Aphanitic Mafic Volcanic Rock)

Porphyritic Andesite (Porphyritic intermediate volcanic rock (Andesite)) — Igneous

Porphyritic Andesite

Porphyritic intermediate volcanic rock (Andesite)

Granite Cobble (Plutonic Granite) — igneous

Granite Cobble

Plutonic Granite

Apache Tears (Obsidian) (Volcanic Glass (SiO2 - Silicon Dioxide with impurities)) — igneous

Apache Tears (Obsidian)

Volcanic Glass (SiO2 - Silicon Dioxide with impurities)

Apache Tear (Obsidian (Hydrated Volcanic Glass) - SiO2 (with impurities)) — igneous

Apache Tear

Obsidian (Hydrated Volcanic Glass) - SiO2 (with impurities)

Amygdaloidal Basalt (Amygdaloidal Basalt) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt

Apache Tear (Obsidian (Hydrated Silica Rich Volcanic Glass)) — igneous

Apache Tear

Obsidian (Hydrated Silica Rich Volcanic Glass)

Scoria (Vesicular Basalt / Scoria) — igneous

Scoria

Vesicular Basalt / Scoria

Basalt (Basalt (composition of plagioclase feldspar and pyroxene)) — igneous

Basalt

Basalt (composition of plagioclase feldspar and pyroxene)

River Pebble (Basalt or fine-grained Quartzite) (Fine-grained Mafic Rock (Volcanic Basalt)) — igneous

River Pebble (Basalt or fine-grained Quartzite)

Fine-grained Mafic Rock (Volcanic Basalt)

Pumice (Pumice (a frothy volcanic glass)) — igneous

Pumice

Pumice (a frothy volcanic glass)

Granite River Pebble (Granite) — igneous

Granite River Pebble

Granite

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Porphyritic Basalt (Basalt with plagioclase phenocrysts) — igneous

Porphyritic Basalt

Basalt with plagioclase phenocrysts

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Andesite (Andesite (contains Plagioclase feldspar, Pyroxene, Hornblende)) — igneous

Andesite

Andesite (contains Plagioclase feldspar, Pyroxene, Hornblende)

Basalt (Vesicular) (Vesicular Basalt) — Igneous

Basalt (Vesicular)

Vesicular Basalt

Quartz in Matrix (possibly with Biotite or Hornblende) (Quartz (Silicon Dioxide, SiO2) in Granitic Matrix) — igneous

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Foliated Metamorphic Rock (Gneiss)) — metamorphic

Gneiss

Foliated Metamorphic Rock (Gneiss)

Granite (Leucogranite) (Felsic Plutonic Rock (Granite)) — igneous

Granite (Leucogranite)

Felsic Plutonic Rock (Granite)

Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

Milky Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

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

Basalt

Basalt (containing Pyroxene and Plagioclase Feldspar)

Basalt with Plagioclase Phenocrysts (Porphyritic Basalt) — igneous

Basalt with Plagioclase Phenocrysts

Porphyritic Basalt

Basalt with Weathering Rind (Mafic Volcanic Rock (Primarily Plagioclase and Pyroxene)) — igneous

Basalt with Weathering Rind

Mafic Volcanic Rock (Primarily Plagioclase and Pyroxene)

Basalt (River Pebble) (Basalt) — igneous

Basalt (River Pebble)

Basalt

Basalt Pebble with Epidote/Olivine (Vitreous Basalt (SiO2 with Ca/Mg/Fe silicates)) — igneous

Basalt Pebble with Epidote/Olivine

Vitreous Basalt (SiO2 with Ca/Mg/Fe silicates)

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Basalt (River Stone) (Basalt) — igneous

Basalt (River Stone)

Basalt

Basalt (Basalt (Mafic Extrusive)) — igneous

Basalt

Basalt (Mafic Extrusive)

Basalt (River Stone) (Afanitic Basalt (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Basalt (River Stone)

Afanitic Basalt (primarily Plagioclase Feldspar and Pyroxene)

Granodiorite (Granodiorite (NaCa0.5(AlSi3O8)2(Fe,Mg)2)) — igneous

Granodiorite

Granodiorite (NaCa0.5(AlSi3O8)2(Fe,Mg)2)

Basalt (Polished River Stone) (Mafic Volcanic Rock (primarily Plagioclase and Pyroxene)) — Igneous

Basalt (Polished River Stone)

Mafic Volcanic Rock (primarily Plagioclase and Pyroxene)

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Basalt (Basalt (composition of Plagioclase feldspar, Pyroxene, and Olivine)) — igneous

Basalt

Basalt (composition of Plagioclase feldspar, Pyroxene, and Olivine)

Granodiorite Pebble (Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite/Amphibole)) — igneous

Granodiorite Pebble

Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite/Amphibole)

Basalt River Pebble (Basalt) — igneous

Basalt River Pebble

Basalt