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

Porphyritic Basalt (Basalt with Feldspar phenocrysts) — igneous

Porphyritic Basalt

Basalt with Feldspar phenocrysts

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

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Porphyry (Porphyritic Rhyolite/Andesite) — igneous

Porphyry

Porphyritic Rhyolite/Andesite

Snowflake Obsidian (Volcanic Glass (felsic volcanic glass with cristobalite inclusions)) — igneous

Snowflake Obsidian

Volcanic Glass (felsic volcanic glass with cristobalite inclusions)

Scoria (Vesicular Mafic Igneous Rock) — igneous

Scoria

Vesicular Mafic Igneous Rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Dark volcanic rock, likely basalt (Basalt; predominantly plagioclase feldspar, pyroxene, and minor olivine or magnetite) — igneous

Dark volcanic rock, likely basalt

Basalt; predominantly plagioclase feldspar, pyroxene, and minor olivine or magnetite

Basalt (with possible alteration or lichen) (Mafic volcanic rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible alteration or lichen)

Mafic volcanic rock (primarily Plagioclase and Pyroxene)

Scoria (Lava Rock) (Scoria (extrusive volcanic rock)) — igneous

Scoria (Lava Rock)

Scoria (extrusive volcanic rock)

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

River Cobble (Basaltic/Andesitic)

Mafic to Intermediate Volcanic Rock

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

Basalt River Stone

Basalt (Aphanitic Mafic Igneous Rock)

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

Basalt Beach Pebble

Basalt (Aphanitic Mafic Volcanic Rock)

Scoria (Lava Rock) (Scoria) — igneous

Scoria (Lava Rock)

Scoria

Basalt (Extrusive volcanic basalt) — igneous

Basalt

Extrusive volcanic basalt

Basalt (Basalt (Extrusive Mafic Igneous)) — igneous

Basalt

Basalt (Extrusive Mafic Igneous)

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

Basalt pebble

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Mafic volcanic rock (Basalt)) — igneous

Basalt

Mafic volcanic rock (Basalt)

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

Basalt River Stone

Basalt (Mafic volcanic rock)

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

Basalt (River Stone)

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

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

Basalt Pebble

Basalt (Mafic Volcanic Rock)

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

Basalt Beach Pebble

Basalt (Mafic Volcanic Rock)

Basalt (Basalt (Mafic Volcanic Rock)) — igneous

Basalt

Basalt (Mafic Volcanic Rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

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

Basalt Pebble

Mafic Volcanic Rock (Basalt)

Basalt (Beach Pebble) (Extrusive mafic volcanic rock) — igneous

Basalt (Beach Pebble)

Extrusive mafic volcanic rock

Basalt Pebble (Extrusive mafic volcanic rock) — igneous

Basalt Pebble

Extrusive mafic volcanic rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — Igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Black Obsidian (Amorphous volcanic glass (SiO2 + impurities)) — igneous

Black Obsidian

Amorphous volcanic glass (SiO2 + impurities)

Granitoid (Common Granite/Gneiss) (Granitoid (primarily Quartz [SiO2], Feldspar [KAlSi3O8], and Mica)) — igneous

Granitoid (Common Granite/Gneiss)

Granitoid (primarily Quartz [SiO2], Feldspar [KAlSi3O8], and Mica)

Amygdaloidal Basalt (Basalt with secondary mineral infilling) — igneous

Amygdaloidal Basalt

Basalt with secondary mineral infilling

Basaltic volcanic pebble (Fine-grained mafic igneous rock, chiefly plagioclase and pyroxene, commonly with olivine and iron-titanium oxides) — igneous

Basaltic volcanic pebble

Fine-grained mafic igneous rock, chiefly plagioclase and pyroxene, commonly with olivine and iron-titanium oxides

Scoria (Extrusive Igneous Rock (Basaltic/Andesitic Composition)) — igneous

Scoria

Extrusive Igneous Rock (Basaltic/Andesitic Composition)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Vesicular) (Extrusive mafic igneous rock) — igneous

Basalt (Vesicular)

Extrusive mafic igneous rock

Basalt (Mafic volcanic rock (primarily plagioclase, pyroxene, and olivine)) — Igneous

Basalt

Mafic volcanic rock (primarily plagioclase, pyroxene, and olivine)