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

Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Porphyry (Porphyritic Andesite/Rhyolite) — igneous

Porphyry

Porphyritic Andesite/Rhyolite

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Granite (Granite) — igneous

Granite

Granite

Basalt (River Stone) (Basalt (composed mostly of plagioclase, pyroxene, and olivine)) — igneous

Basalt (River Stone)

Basalt (composed mostly of plagioclase, pyroxene, and olivine)

Gabbro (Basaltic Plutonic Rock (Gabbro)) — igneous

Gabbro

Basaltic Plutonic Rock (Gabbro)

Black Obsidian (Volcanic Glass (Amorphous Silicon Dioxide, SiO2)) — igneous

Black Obsidian

Volcanic Glass (Amorphous Silicon Dioxide, SiO2)

Obsidian (Apache Tear) (Volcanic Glass (High-silica Rhyolite)) — igneous

Obsidian (Apache Tear)

Volcanic Glass (High-silica Rhyolite)

Granite (Granite (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica)

Basalt (River Rock) (Basalt) — igneous

Basalt (River Rock)

Basalt

Pumice (Pumice (volcanic glass)) — igneous

Pumice

Pumice (volcanic glass)

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

Pumice

Pumice (a highly vesicular volcanic glass)

Basalt (Mafic volcanic rock (various silicate minerals)) — igneous

Basalt

Mafic volcanic rock (various silicate minerals)

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

Vesicular Basalt (or Scoria)

Vesicular Basalt

Apache Tear (Obsidian) (Volcanic Glass (Amorphous Silicon Dioxide)) — igneous

Apache Tear (Obsidian)

Volcanic Glass (Amorphous Silicon Dioxide)

Basalt (Basalt) — igneous

Basalt

Basalt

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

Porphyritic Basalt

Porphyritic Basalt (Mafic Volcanic Rock)

Gray Granite (Phaneritic plutonic rock (Granite)) — igneous

Gray Granite

Phaneritic plutonic rock (Granite)

Black Obsidian (Volcanic Glass (SiO2)) — igneous

Black Obsidian

Volcanic Glass (SiO2)

Obsidian (Obsidian (volcanic glass)) — igneous

Obsidian

Obsidian (volcanic glass)

Basalt (Aphanitic Mafic Volcanic Rock) — igneous

Basalt

Aphanitic Mafic Volcanic Rock

Granitic Pegmatite (with Smoky Quartz and Mica) (Granitic Pegmatite (composed of SiO2, KAl2(AlSi3O10)(OH)2, and (K,Na)(AlSi3O8))) — igneous

Granitic Pegmatite (with Smoky Quartz and Mica)

Granitic Pegmatite (composed of SiO2, KAl2(AlSi3O10)(OH)2, and (K,Na)(AlSi3O8))

Propylitic Altered Andesite (Hydrothermally Altered Andesite) — igneous

Propylitic Altered Andesite

Hydrothermally Altered Andesite

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

Granite Fragment

Felsic Plutonic Rock (Granite)

Granite (Granite) — igneous

Granite

Granite

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

Basalt River Pebble

Basalt (Mafic Volcanic Rock)

Granite (Granite (Feldspar-Quartz-Mica Intrusive)) — igneous

Granite

Granite (Feldspar-Quartz-Mica Intrusive)

Basalt Gravel (Basalt) — igneous

Basalt Gravel

Basalt

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

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Que Sera Stone (Llanite) (Rhyolite porphyry with blue quartz inclusions) — igneous

Que Sera Stone (Llanite)

Rhyolite porphyry with blue quartz inclusions

Granite (Granite) — igneous

Granite

Granite

Granite (Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8)) — igneous

Granite

Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8)

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

Pumice (Pumice (extrusive volcanic rock)) — igneous

Pumice

Pumice (extrusive volcanic rock)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

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

Basalt

Aphanitic Mafic Volcanic Rock (Fe/Mg rich)

Basalt River Pebble (Basalt) — igneous

Basalt River Pebble

Basalt

Granite (Granite (Phaneritic Quartz Monzonite)) — igneous

Granite

Granite (Phaneritic Quartz Monzonite)