Rock Identifier

Category

Igneous

Browse igneous specimens identified by the Rock Identifier community.

Learn about Igneous in the encyclopedia

Sölvsbergite

Sölvsbergite

Mint Obsidian

Mint Obsidian

Minette

Minette

Yellow-Green Obsidian

Yellow-Green Obsidian

Bostonite

Bostonite

Yellow Obsidian

Yellow Obsidian

Tinguaite

Tinguaite

Wonderstone

Wonderstone

Wehrite

Wehrite

Watermelon Obsidian

Watermelon Obsidian

Websterite

Websterite

Variolite

Variolite

Bull Quartz with Mica and Host Rock (Massive Quartz (SiO2) with Muscovite/Chlorite inclusions) — igneous

Bull Quartz with Mica and Host Rock

Massive Quartz (SiO2) with Muscovite/Chlorite inclusions

Basalt with Weathering Rind (Basalt (Mafic volcanic rock)) — igneous

Basalt with Weathering Rind

Basalt (Mafic volcanic rock)

Basalt pebble (Aphanitic Mafic Volcanic Rock (Fe/Mg rich)) — igneous

Basalt pebble

Aphanitic Mafic Volcanic Rock (Fe/Mg rich)

Gravel (likely Basalt or Greywacke) (Basalt (Mafic volcanic rock)) — igneous

Gravel (likely Basalt or Greywacke)

Basalt (Mafic volcanic rock)

Basalt (Vesicular) (Basalt) — igneous

Basalt (Vesicular)

Basalt

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

Basalt River Stone

Basalt (Mafic volcanic rock)

Gabbro (Gabbro (Mg,Fe)2Si2O6 and CaAl2Si2O8) — igneous

Gabbro

Gabbro (Mg,Fe)2Si2O6 and CaAl2Si2O8

Basalt (Mafic Volcanic Rock) — igneous

Basalt

Mafic Volcanic Rock

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

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Granodiorite (Granodiorite (intermediate plutonic rock)) — igneous

Granodiorite

Granodiorite (intermediate plutonic rock)

Porphyritic Basalt (Basalt (Mafic volcanic rock)) — igneous

Porphyritic Basalt

Basalt (Mafic volcanic rock)

Black Obsidian cabochon (Volcanic Glass (SiO2 + impurities)) — igneous

Black Obsidian cabochon

Volcanic Glass (SiO2 + impurities)

Gold Sheen Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Gold Sheen Obsidian

Volcanic Glass (SiO2 + impurities)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Vesicular Basalt (Vesicular Basalt) — igneous

Vesicular Basalt

Vesicular Basalt

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

Basalt River Pebble

Aphanitic Mafic Volcanic Rock (Basalt)

Basalt (Basalt) — igneous

Basalt

Basalt

Quartz with Mica (Pegmatite) (Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide (KAl2(AlSi3O10)(OH,F)2)) — igneous

Quartz with Mica (Pegmatite)

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide (KAl2(AlSi3O10)(OH,F)2)

Diorite (Phaneritic intermediate plutonic rock) — igneous

Diorite

Phaneritic intermediate plutonic rock

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Basalt (Extrusive mafic volcanic rock) — igneous

Basalt

Extrusive mafic volcanic rock

Vesicular Basalt (Lava Rock) (Vesicular Basalt (comprising plagioclase feldspar and pyroxene group minerals)) — igneous

Vesicular Basalt (Lava Rock)

Vesicular Basalt (comprising plagioclase feldspar and pyroxene group minerals)

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

Red Scoria (Lava Rock)

Vesicular Basalt / Scoria

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

Pumice

Pumice (Vesicular Rhyolite/Andesite)

Porphyritic Rhyolite (Porphyritic Rhyolite (Felsic volcanic rock)) — igneous

Porphyritic Rhyolite

Porphyritic Rhyolite (Felsic volcanic rock)

Pumice (Pumice (Volcanic silicate glass)) — igneous

Pumice

Pumice (Volcanic silicate glass)

Basalt (Vesicular) (Vesicular Basalt) — igneous

Basalt (Vesicular)

Vesicular Basalt

Apache Tears (Tumbled Obsidian) (Volcanic Glass (SiO2 + impurities)) — igneous

Apache Tears (Tumbled Obsidian)

Volcanic Glass (SiO2 + impurities)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Porphyritic Basalt (Porphyritic Basalt with Olivine phenocrysts) — igneous

Porphyritic Basalt

Porphyritic Basalt with Olivine phenocrysts

Chinese Writing Stone (Porphyritic Basalt or Andesite with Feldspar phenocrysts (likely Orthoclase or Plagioclase)) — igneous

Chinese Writing Stone

Porphyritic Basalt or Andesite with Feldspar phenocrysts (likely Orthoclase or Plagioclase)

Diorite (Diorite) — igneous

Diorite

Diorite

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

Vesicular Basalt (Lava Rock)

Vesicular Basalt

Obsidian (Volcanic Glass (70% or more SiO2)) — igneous

Obsidian

Volcanic Glass (70% or more SiO2)

Snowflake Obsidian (Volcanic Glass with Spherulite Inclusions (primarily SiO2)) — igneous

Snowflake Obsidian

Volcanic Glass with Spherulite Inclusions (primarily SiO2)

River Cobble (Basaltic/Andesitic) (Mafic to Intermediate Volcanic Rock) — igneous

River Cobble (Basaltic/Andesitic)

Mafic to Intermediate Volcanic Rock

Amygdaloidal Basalt (Basalt with secondary mineral infilling) — igneous

Amygdaloidal Basalt

Basalt with secondary mineral infilling

Porphyritic Amygdaloidal Basalt (Amygdaloidal Porphyritic Basalt (Mafic volcanic rock)) — igneous

Porphyritic Amygdaloidal Basalt

Amygdaloidal Porphyritic Basalt (Mafic volcanic rock)

Granite (Granite) — igneous

Granite

Granite

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Granite Pebble (Granite (Phaneritic Quartz-Feldspar Plutonic Rock)) — igneous

Granite Pebble

Granite (Phaneritic Quartz-Feldspar Plutonic Rock)

Basalt (Mafic volcanic rock) — igneous

Basalt

Mafic volcanic rock