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

Diorite (Intermediate plutonic igneous rock) — igneous

Diorite

Intermediate plutonic igneous rock

Scoria (Red Lava Rock) (Scoria (Mafic volcanic rock)) — igneous

Scoria (Red Lava Rock)

Scoria (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Basalt (Mafic Extrusive Igneous Rock) — igneous

Basalt

Mafic Extrusive Igneous Rock

Vesicular Basalt (Basalt (Mafic Extrusive Volcanic Rock)) — igneous

Vesicular Basalt

Basalt (Mafic Extrusive Volcanic Rock)

Basalt (with possible quartz veinsing) (Basalt) — igneous

Basalt (with possible quartz veinsing)

Basalt

Vesicular Basalt (Extrusive mafic igneous rock) — igneous

Vesicular Basalt

Extrusive mafic igneous rock

Basalt Pebble (Extrusive mafic igneous rock) — igneous

Basalt Pebble

Extrusive mafic igneous rock

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Basalt Pebble (Extrusive mafic igneous rock) — igneous

Basalt Pebble

Extrusive mafic igneous rock

Basalt (Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)) — igneous

Basalt

Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)

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

Vesicular Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Peridotite (Ultramafic intrusive igneous rock) — igneous

Peridotite

Ultramafic intrusive igneous rock

Basalt (Basalt (Extrusive Mafic Igneous)) — igneous

Basalt

Basalt (Extrusive Mafic Igneous)

Vesicular Basalt (Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (Scoria)

Vesicular Basalt

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Porphyritic Basalt (Porphyritic Extrusive Igneous Rock) — igneous

Porphyritic Basalt

Porphyritic Extrusive Igneous Rock

Scoria (Mafic to intermediate volcanic rock) — igneous

Scoria

Mafic to intermediate volcanic rock

Vesicular Basalt with Secondary Mineral Infill (Mafic Volcanic Rock (Basalt)) — igneous

Vesicular Basalt with Secondary Mineral Infill

Mafic Volcanic Rock (Basalt)

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

Vesicular Basalt

Extrusive mafic igneous rock (Basalt)

Basalt River Stones (Aphantic Mafic Igneous Rock (Basalt)) — igneous

Basalt River Stones

Aphantic Mafic Igneous Rock (Basalt)

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

River Stone (Basalt)

Basalt (Aphanitic Mafic Igneous Rock)

Diorite (Intermediate plutonic igneous rock) — igneous

Diorite

Intermediate plutonic igneous rock

Diorite (Intermediate Phaneritic Igneous Rock) — igneous

Diorite

Intermediate Phaneritic Igneous Rock

Diorite (Intermediate plutonic igneous rock) — Igneous

Diorite

Intermediate plutonic igneous rock

Basalt (Basalt (Mafic Igneous Rock)) — igneous

Basalt

Basalt (Mafic Igneous Rock)

Porphyritic Andesite or Dacite (tumbled pebble) (Porphyritic Igneous Rock (likely Andesite or Dacite)) — Igneous

Porphyritic Andesite or Dacite (tumbled pebble)

Porphyritic Igneous Rock (likely Andesite or Dacite)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Weathered rhyolite or felsic volcanic rock (Rhyolite, commonly quartz–alkali feldspar–plagioclase with iron-oxide alteration) — igneous

Weathered rhyolite or felsic volcanic rock

Rhyolite, commonly quartz–alkali feldspar–plagioclase with iron-oxide alteration

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

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

Basalt River Stone

Basalt (Mafic Igneous Rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Smoky Quartz with Feldspar (Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)) — mineral

Smoky Quartz with Feldspar

Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)

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

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

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

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Porphyritic Andesite or Basalt (Porphyritic Intermediate/Mafic Igneous Rock) — igneous

Porphyritic Andesite or Basalt

Porphyritic Intermediate/Mafic Igneous Rock

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

Basalt Pebble

Mafic Igneous Rock (Basalt)

Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock