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

Pumice (Felsic Volcanic Glass / Vesicular Rhyolite) — Igneous

Pumice

Felsic Volcanic Glass / Vesicular Rhyolite

Pumice (Highly vesicular rhyolite/dacite (Amorphous glass)) — igneous

Pumice

Highly vesicular rhyolite/dacite (Amorphous glass)

Basalt with Quartz/Zeolite Inclusions (Porphyritic Basalt (SiO2 with Aluminosilicates)) — igneous

Basalt with Quartz/Zeolite Inclusions

Porphyritic Basalt (SiO2 with Aluminosilicates)

Vesicular Basalt with Lichen (Vesicular Basalt) — igneous

Vesicular Basalt with Lichen

Vesicular Basalt

Basalt (Basalt) — igneous

Basalt

Basalt

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

Granite

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

Pumice (Vesicular volcanic glass (primarily SiO2)) — igneous

Pumice

Vesicular volcanic glass (primarily SiO2)

Basalt (Mafic Volcanic Rock (composed of Plagioclase Feldspar and Pyroxene)) — igneous

Basalt

Mafic Volcanic Rock (composed of Plagioclase Feldspar and Pyroxene)

Limonite-stained Granite (Felsic Plutonic Rock with Hydrated Iron Oxides) — igneous

Limonite-stained Granite

Felsic Plutonic Rock with Hydrated Iron Oxides

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Vesicular Basalt with Oxidation (Scoriaceous Olivine Basalt (Mafic volcanic rock)) — igneous

Vesicular Basalt with Oxidation

Scoriaceous Olivine Basalt (Mafic volcanic rock)

Granite (Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase)) — igneous

Granite

Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase)

Obsidian (Obsidian (principally SiO2)) — igneous

Obsidian

Obsidian (principally SiO2)

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

Banded Gneiss (Gneiss (Metamorphic rock of variable mineralogy, often quartz-feldspar base)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic rock of variable mineralogy, often quartz-feldspar base)

Red Scoria (Lava Rock) (Scoria (highly vesicular basaltic/andesitic rock)) — igneous

Red Scoria (Lava Rock)

Scoria (highly vesicular basaltic/andesitic rock)

Quartzite with Mafic Intrusion (Gneiss/Schist Contact) (Metamorphic Quartzite (SiO2) with Amphibole/Biotite Schist) — metamorphic

Quartzite with Mafic Intrusion (Gneiss/Schist Contact)

Metamorphic Quartzite (SiO2) with Amphibole/Biotite Schist

Quartz (Rose or Clear variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose or Clear variety)

Silicon Dioxide (SiO2)

Apache Tear (Obsidian) (Obsidian (Hydrated Amorphous Silica, SiO2 + MgO/Fe3O4)) — igneous

Apache Tear (Obsidian)

Obsidian (Hydrated Amorphous Silica, SiO2 + MgO/Fe3O4)

Porphyritic Basalt (Amygdaloidal Porphyritic Basalt) — Igneous

Porphyritic Basalt

Amygdaloidal Porphyritic Basalt

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss with Quartz Veining (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Gneiss with Quartz Veining

Gneiss (High-grade regional metamorphic rock)

Basalt with Desert Varnish (Mafic Volcanic Rock (Fe/Mg rich Silicate)) — igneous

Basalt with Desert Varnish

Mafic Volcanic Rock (Fe/Mg rich Silicate)

Vesicular Basalt (or Porphyritic Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (or Porphyritic Scoria)

Vesicular Basalt

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Nuummite (Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)) — metamorphic

Nuummite

Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

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

Clear Quartz Crystal (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Greenstone (Greenschist / Meta-basalt) — metamorphic

Greenstone

Greenschist / Meta-basalt

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Greenstone (Metabasalt / Chlorite-Epidote Schist) — metamorphic

Greenstone

Metabasalt / Chlorite-Epidote Schist

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Quartz Druzy (on Calcedony/Quartz base) (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy (on Calcedony/Quartz base)

Silicon Dioxide (SiO2)

Basalt and Quartz Pebble (Basalt (Igneous) and Quartzite/Quartz (SiO2) pebble) — igneous and sedimentary

Basalt and Quartz Pebble

Basalt (Igneous) and Quartzite/Quartz (SiO2) pebble

igneous and sedimentary

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Pumice (Pumice (volcanic glass with vesicular texture)) — igneous

Pumice

Pumice (volcanic glass with vesicular texture)

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

Pumice

Pumice (a highly vesicular volcanic glass)

Obsidian (Volcanic Glass (Amorphous Silica)) — igneous

Obsidian

Volcanic Glass (Amorphous Silica)

Porphyry (Flower Stone) (Porphyritic Basalt or Andesite) — igneous

Porphyry (Flower Stone)

Porphyritic Basalt or Andesite

Blue Sapphire (Raw) (Corundum (Al2O3)) — mineral

Blue Sapphire (Raw)

Corundum (Al2O3)