Rock Identifier

Category

Igneous Rock (Volcanic Glass)

Browse igneous rock (volcanic glass) specimens identified by the Rock Identifier community.

Learn about Igneous Rock (Volcanic Glass) in the encyclopedia

Rock Gypsum

Coral Rock

Asphalt Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Black Obsidian

Obsidian

Pink Obsidian

Sideromelane

Carbonatite

Tachylite

Scoria (Lava Rock) (Mafic Vesicular Volcanic Rock) — igneous

Scoria (Lava Rock)

Mafic Vesicular Volcanic Rock

Pumice (Pumice (Volcanic Rock)) — igneous

Pumice

Pumice (Volcanic Rock)

Porphyritic Basalt or Porphyritic Andesite (Porphyritic volcanic rock) — igneous

Porphyritic Basalt or Porphyritic Andesite

Porphyritic volcanic rock

Pumice or Vesicular Basalt (Vesicular volcanic rock) — igneous

Pumice or Vesicular Basalt

Vesicular volcanic rock

Basalt (Mafic Volcanic Rock) — igneous

Basalt

Mafic Volcanic Rock

Basalt (Mafic Volcanic Rock) — igneous

Basalt

Mafic Volcanic Rock

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

Basalt (River Stone)

Mafic volcanic rock

Peridotite Nodules in Basalt (Olivine Xenolith) (Mantle Peridotite / Olivine ((Mg, Fe)2SiO4) in Basalt) — igneous

Peridotite Nodules in Basalt (Olivine Xenolith)

Mantle Peridotite / Olivine ((Mg, Fe)2SiO4) in Basalt

Dalmation Jasper (Dalmation Stone) (Perthitic feldspar-quartz-amphibole rock) — igneous

Dalmation Jasper (Dalmation Stone)

Perthitic feldspar-quartz-amphibole rock

Andesite Porphyry (Andesite Porphyry) — Igneous

Andesite Porphyry

Andesite Porphyry

Basalt River Stone (Aphanitic Mafic Igneous Rock (Basalt)) — igneous

Basalt River Stone

Aphanitic Mafic Igneous Rock (Basalt)

Basalt (River Cobble) (Basalt) — igneous

Basalt (River Cobble)

Basalt

Basalt (River Stone) (Basalt) — igneous

Basalt (River Stone)

Basalt

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Porphyritic Basalt or Porphyry (Porphyritic Igneous Rock) — igneous

Porphyritic Basalt or Porphyry

Porphyritic Igneous Rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Purple-tinted scoria/vesicular variety) (Extrusive mafic igneous rock (SiO2 range 45–52%)) — igneous

Basalt (Purple-tinted scoria/vesicular variety)

Extrusive mafic igneous rock (SiO2 range 45–52%)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Basalt (various silicate compositions)) — igneous

Basalt

Basalt (various silicate compositions)

Porphyritic Basalt (Chinese Writing Stone) (Porphyritic Basalt or Andesite containing plagioclase feldspar phenocrysts) — igneous

Porphyritic Basalt (Chinese Writing Stone)

Porphyritic Basalt or Andesite containing plagioclase feldspar phenocrysts

Agate (Silicon dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (Chalcedony), SiO2

Basalt (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Obsidian (Obsidian (Volcanic Glass), primarily SiO2 (70% or more silicon dioxide)) — Igneous

Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (70% or more silicon dioxide)

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Vesicular Basalt (Lava Rock) (Basalt) — igneous

Vesicular Basalt (Lava Rock)

Basalt

Porphyritic Rhyolite (Rhyolite (Porphyritic texture)) — igneous

Porphyritic Rhyolite

Rhyolite (Porphyritic texture)

Amygdaloidal Basalt (Extrusive Igneous Rock with Amygdules) — igneous

Amygdaloidal Basalt

Extrusive Igneous Rock with Amygdules

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

Basalt River Pebble

Basalt (Mafic Volcanic Rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Vesicular Basalt (Pumice-like) (Vesicular Basalt) — igneous

Vesicular Basalt (Pumice-like)

Vesicular Basalt

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

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

Obsidian

Volcanic Glass (SiO2 + minor impurities)

Basalt (River Stone) (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt (River Stone)

Basalt (Aphanitic Mafic Igneous Rock)