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

Porphyritic Basalt (Porphyritic Basalt (containing Plagioclase or Alkali Feldspar phenocrysts)) — igneous

Porphyritic Basalt

Porphyritic Basalt (containing Plagioclase or Alkali Feldspar phenocrysts)

Amygdaloidal Basalt (Basalt with secondary amygdule minerals (likely Epidote or Chlorite)) — igneous

Amygdaloidal Basalt

Basalt with secondary amygdule minerals (likely Epidote or Chlorite)

Granite Cobble (Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite Cobble

Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Crushed Granite Gravel (Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase Feldspar)) — igneous

Crushed Granite Gravel

Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase Feldspar)

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Pumice (Pumice (volcanic glass froth)) — igneous

Pumice

Pumice (volcanic glass froth)

Basalt (Basalt (composition of plagioclase, pyroxene, and olivine)) — igneous

Basalt

Basalt (composition of plagioclase, pyroxene, and olivine)

Basalt (Basalt) — igneous

Basalt

Basalt

Andesite (Andesite) — igneous

Andesite

Andesite

Pumice (Pumicite (Amorphous Volcanic Glass)) — Igneous

Pumice

Pumicite (Amorphous Volcanic Glass)

Basalt (Basalt (dominated by Plagioclase Feldspar and Pyroxene)) — igneous

Basalt

Basalt (dominated by Plagioclase Feldspar and Pyroxene)

Mahogany Obsidian (Volcanic Glass (predominantly SiO2 with Fe2O3 inclusions)) — igneous

Mahogany Obsidian

Volcanic Glass (predominantly SiO2 with Fe2O3 inclusions)

Basalt (Basalt (SiO2 percentage between 45% and 52%)) — igneous

Basalt

Basalt (SiO2 percentage between 45% and 52%)

Pumice (Pumice (a highly vesicular volcanic glass)) — igneous

Pumice

Pumice (a highly vesicular volcanic glass)

Pumice (Pumicite / Vesicular Rhyolite) — igneous

Pumice

Pumicite / Vesicular Rhyolite

Yellow Jasper (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2)

Agate (Moss or Plume Agate variety) (Silicon Dioxide (SiO2)) — mineral

Agate (Moss or Plume Agate variety)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon dioxide (SiO2)) — mineral

Clear Quartz

Silicon dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Wonderstone (Banded Rhyolite) (Rhyolite (Silicon Dioxide with Iron Oxide impurities)) — igneous

Wonderstone (Banded Rhyolite)

Rhyolite (Silicon Dioxide with Iron Oxide impurities)

Porphyritic Basalt (Chinese Writing Stone) (Porphyritic Basalt with Feldspar phenocrysts) — igneous

Porphyritic Basalt (Chinese Writing Stone)

Porphyritic Basalt with Feldspar phenocrysts

Pumice (Vesicular volcanic glass (primarily Alumino-silicates)) — igneous

Pumice

Vesicular volcanic glass (primarily Alumino-silicates)

Pumice (Pumice (volcanic glass)) — igneous

Pumice

Pumice (volcanic glass)

Granite (Granite) — Igneous

Granite

Granite

Basalt with Porphyritic Texture (Porphyritic Basalt) — igneous

Basalt with Porphyritic Texture

Porphyritic Basalt

Basalt with Amygdule (Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill) — igneous

Basalt with Amygdule

Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill

Pumice (Pumice (a highly vesicular volcanic glass)) — igneous

Pumice

Pumice (a highly vesicular volcanic glass)

Peridotite (Dunite) (Peridotite (mostly Olivine: (Mg,Fe)2SiO4)) — igneous

Peridotite (Dunite)

Peridotite (mostly Olivine: (Mg,Fe)2SiO4)

Porphyritic Andesite (Andesite (porphyritic variety)) — igneous

Porphyritic Andesite

Andesite (porphyritic variety)

Pumice (Pumice (a volcanic glass, primarily SiO2)) — igneous

Pumice

Pumice (a volcanic glass, primarily SiO2)

Pumice (Pumice (a highly vesicular amorphous silicate)) — igneous

Pumice

Pumice (a highly vesicular amorphous silicate)

Pumice (Vesicular volcanic glass) — igneous

Pumice

Vesicular volcanic glass

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Granodiorite (Granodiorite (containing Plagioclase, Quartz, and K-feldspar)) — igneous

Granodiorite

Granodiorite (containing Plagioclase, Quartz, and K-feldspar)

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

Pumice

Pumice (a vesicular volcanic glass)

Basalt Pebble (Extrusive Aphanitic Basalt) — igneous

Basalt Pebble

Extrusive Aphanitic Basalt

Chondrite Meteorite (Ordinary Chondrite (L or H type)) — igneous

Chondrite Meteorite

Ordinary Chondrite (L or H type)

Quartz (Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO₂)

Gemstone Sand (Mineral Assortment) (Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)) — mineral

Gemstone Sand (Mineral Assortment)

Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)

Ferruginous Quartz Cobble (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Ferruginous Quartz Cobble

Silicon Dioxide (SiO2) with Iron Oxide inclusions