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

Basalt River Cobble (Basalt (Composition primarily Plagioclase Feldspar and Pyroxene)) — igneous

Basalt River Cobble

Basalt (Composition primarily Plagioclase Feldspar and Pyroxene)

Quartz-filled Basalt Geode (Amygdaloidal Basalt with Quartz (SiO2)) — igneous

Quartz-filled Basalt Geode

Amygdaloidal Basalt with Quartz (SiO2)

Porphyritic Basalt (Porphyritic Basalt) — igneous

Porphyritic Basalt

Porphyritic Basalt

Basalt (Basalt) — igneous

Basalt

Basalt

Vesicular Basalt (Extrusive mafic igneous rock) — igneous

Vesicular Basalt

Extrusive mafic igneous rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Amygdaloidal Basalt (Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)

Basalt (Basalt (Igneous Volcanic Rock)) — igneous

Basalt

Basalt (Igneous Volcanic Rock)

Pahoehoe Basalt (Extrusive mafic volcanic rock) — igneous

Pahoehoe Basalt

Extrusive mafic volcanic rock

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Amygdaloidal Basalt (Amygdaloidal Basalt containing Zeolite or Quartz (SiO2/Silicates)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt containing Zeolite or Quartz (SiO2/Silicates)

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

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Basalt (Porphyritic) (Porphyritic Basalt) — igneous

Basalt (Porphyritic)

Porphyritic Basalt

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

Basalt

Basalt (dominated by plagioclase feldspar, pyroxene, and olivine)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Basalt (Mafic Igneous Rock (composed primarily of pyroxene and calcium-rich plagioclase)) — igneous

Basalt

Mafic Igneous Rock (composed primarily of pyroxene and calcium-rich plagioclase)

Green Jasper / Metavesuvianite-bearing rock (Silica-rich microcrystalline quartz aggregate / Green Jasper) — igneous

Green Jasper / Metavesuvianite-bearing rock

Silica-rich microcrystalline quartz aggregate / Green Jasper

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

Basalt River Stone

Basalt (Aphanitic Mafic Volcanic Rock)

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

Vesicular Basalt (Lava Rock)

Basalt (Vesicular Variety)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Vesicular) (Extrusive Igneous Rock) — igneous

Basalt (Vesicular)

Extrusive Igneous Rock

Porphyry (Porphyritic Igneous Rock) — igneous

Porphyry

Porphyritic Igneous Rock

Porphyry (likely Porphyritic Andesite or Basalt) (Porphyritic Igneous Rock) — igneous

Porphyry (likely Porphyritic Andesite or Basalt)

Porphyritic Igneous Rock

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Basalt (River-worn Pebble) (Aphanitic Mafic Igneous Rock) — igneous

Basalt (River-worn Pebble)

Aphanitic Mafic Igneous Rock

Basalt Cobble (Vesicular Basalt (Mafic Extrusive)) — igneous

Basalt Cobble

Vesicular Basalt (Mafic Extrusive)

Weathered basaltic cobble (Altered basalt, predominantly plagioclase and pyroxene) — igneous

Weathered basaltic cobble

Altered basalt, predominantly plagioclase and pyroxene

Basalt (Beach Pebble) (Basalt) — igneous

Basalt (Beach Pebble)

Basalt

Porphyritic Andesite (Andesite (Intermediate Volcanic Rock)) — igneous

Porphyritic Andesite

Andesite (Intermediate Volcanic Rock)

Vesicular Basalt (Amygdaloidal Basalt) (Basalt with Secondary Mineral Inclusions) — igneous

Vesicular Basalt (Amygdaloidal Basalt)

Basalt with Secondary Mineral Inclusions

Chert on Volcanic Host Rock (Sedimentary Chert (SiO2) within Basalt or Andesite) — sedimentary

Chert on Volcanic Host Rock

Sedimentary Chert (SiO2) within Basalt or Andesite

Basalt with Granite Inclusions (Xenoliths) (Mafic igneous rock (Basalt) with Sialic minerals) — igneous

Basalt with Granite Inclusions (Xenoliths)

Mafic igneous rock (Basalt) with Sialic minerals

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Amygdaloidal Basalt (Amygdaloidal Basalt containing Zeolite and Calcite inclusions) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt containing Zeolite and Calcite inclusions

Basalt (Porphyritic) (Porphyritic Basalt) — igneous

Basalt (Porphyritic)

Porphyritic Basalt

Vesicular Basalt (Vesicular Basalt) — igneous

Vesicular Basalt

Vesicular Basalt

Basalt Pebble (Vesicular / Beach Cobble) (Basalt (mafic extrusive igneous rock)) — igneous

Basalt Pebble (Vesicular / Beach Cobble)

Basalt (mafic extrusive igneous rock)

Vesicular Basalt (Scoria) (Aphanitic Mafic Igneous Rock with Vesicular Texture) — igneous

Vesicular Basalt (Scoria)

Aphanitic Mafic Igneous Rock with Vesicular Texture

Basalt River Pebble (Mafic Igneous Rock (Fine-grained Basalt)) — igneous

Basalt River Pebble

Mafic Igneous Rock (Fine-grained Basalt)

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)