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

Granitic Pegmatite (Granitic Pegmatite (primarily SiO2 with KAlSi3O8)) — igneous

Granitic Pegmatite

Granitic Pegmatite (primarily SiO2 with KAlSi3O8)

Granite Cobble (Granite (Phaneritic Quartz-Feldspar specimen)) — igneous

Granite Cobble

Granite (Phaneritic Quartz-Feldspar specimen)

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

Apache Tears (Obsidian)

Volcanic Glass (SiO2 - Silicon Dioxide with impurities)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granodiorite (Granodiorite (Na,Ca)(Si,Al)4O8) — igneous

Granodiorite

Granodiorite (Na,Ca)(Si,Al)4O8

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

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

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Basalt River Stone (Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)) — igneous

Basalt River Stone

Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)

Basalt (with Brass Inlay) (Basalt (Mafic volcanic rock)) — igneous

Basalt (with Brass Inlay)

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Granitic Gravel (Granite (Quartz, Feldspar, and Mica mixture)) — igneous

Granitic Gravel

Granite (Quartz, Feldspar, and Mica mixture)

Ferrocoke or Slag (Anthropogenic pyrometallurgical residue) — igneous

Ferrocoke or Slag

Anthropogenic pyrometallurgical residue

Sheen Obsidian (Volcanic glass (SiO2 with inclusions)) — igneous

Sheen Obsidian

Volcanic glass (SiO2 with inclusions)

Granite Cobble (Phaneritic Felsic Intrusive Rock (Granite)) — igneous

Granite Cobble

Phaneritic Felsic Intrusive Rock (Granite)

Granite (Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

Pumice (Pumicite) — igneous

Pumice

Pumicite

Black Obsidian (Obsidian (Amorphous volcanic glass, SiO2)) — igneous

Black Obsidian

Obsidian (Amorphous volcanic glass, SiO2)

Basalt with Weathering Crust (Extrusive mafic volcanic rock) — igneous

Basalt with Weathering Crust

Extrusive mafic volcanic rock

Diabase (also known as Dolerite) (Diabase / Microgabbro) — igneous

Diabase (also known as Dolerite)

Diabase / Microgabbro

Obsidian (Volcanic glass (SiO2 - Silicon dioxide predominant composition)) — Igneous

Obsidian

Volcanic glass (SiO2 - Silicon dioxide predominant composition)

K2 Stone (or K2 Jasper) (Azurite-in-Granite (Potassium Feldspar, Quartz, Plagioclase, Muscovite, and Azurite)) — igneous

K2 Stone (or K2 Jasper)

Azurite-in-Granite (Potassium Feldspar, Quartz, Plagioclase, Muscovite, and Azurite)

Granitic Pegmatite with Tourmaline/Chlorite (Pegmatite) — Igneous

Granitic Pegmatite with Tourmaline/Chlorite

Pegmatite

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

Pumice

Pumice (volcanic glass with vesicular texture)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Apache Tear (Obsidian) (Volcanic glass (SiO2 - Silicon Dioxide)) — igneous

Apache Tear (Obsidian)

Volcanic glass (SiO2 - Silicon Dioxide)

Granitic Pegmatite (Pegmatite containing Quartz, Feldspar, and Muscovite mica) — igneous

Granitic Pegmatite

Pegmatite containing Quartz, Feldspar, and Muscovite mica

Basalt (Basalt) — igneous

Basalt

Basalt

Diorite (Diorite (Plagioclase-rich phaneritic intrusive)) — igneous

Diorite

Diorite (Plagioclase-rich phaneritic intrusive)

Granite (Phaneritic plutonic rock (Quartz, Feldspar, Mica)) — igneous

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Basalt with Quartz Vein and Weathering Crust (Amygdaloidal or Porphyritic Basalt) — igneous

Basalt with Quartz Vein and Weathering Crust

Amygdaloidal or Porphyritic Basalt

Rhyolite (Rhyolite (High-silica volcanic rock)) — igneous

Rhyolite

Rhyolite (High-silica volcanic rock)

Basalt (River Pebble) (Basalt) — igneous

Basalt (River Pebble)

Basalt

Basalt (Basalt (dominated by plagioclase feldspar and pyroxene)) — igneous

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Obsidian (Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)) — igneous

Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

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

Granite River Pebble

Granite (composed of Quartz, Feldspar, and Mica)

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

Basalt

Basalt (principally Plagioclase Feldspar and Pyroxene)

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

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Dalmatian Jasper (Dalmatian Stone) (Peralkaline rhyolite) — igneous

Dalmatian Jasper (Dalmatian Stone)

Peralkaline rhyolite

Mahogany Obsidian (Volcanic Glass with Hematite/Magnetite inclusions (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions (SiO2 + Fe2O3)

Basalt (Basalt) — igneous

Basalt

Basalt

Porphyritic Rhyolite (Rhyolite (Porphyritic texture)) — igneous

Porphyritic Rhyolite

Rhyolite (Porphyritic texture)

Pumice (Scoria variety) (Scoria (Vesicular Basalt)) — igneous

Pumice (Scoria variety)

Scoria (Vesicular Basalt)