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 Pebble (Basalt (Mafic Igneous Rock)) — igneous

Basalt Pebble

Basalt (Mafic Igneous Rock)

Basalt (Vesicular or Porphyritic) (Aphanitic Mafic Igneous Rock) — igneous

Basalt (Vesicular or Porphyritic)

Aphanitic Mafic Igneous Rock

Diabase (Dolerite) (Mafic Intrusive Igneous Rock) — igneous

Diabase (Dolerite)

Mafic Intrusive Igneous Rock

Dacite (Dacite (intermediate volcanic rock)) — igneous

Dacite

Dacite (intermediate volcanic rock)

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Basalt with Jasper Vein (Extrusive Igneous Rock with Quartz/Chalcedony Vein) — igneous

Basalt with Jasper Vein

Extrusive Igneous Rock with Quartz/Chalcedony Vein

Pumice (Pumice (a highly vesicular volcanic rock)) — igneous

Pumice

Pumice (a highly vesicular volcanic rock)

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

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Dyed Agate (SiO2) — Mineral

Dyed Agate

SiO2

Basalt Pebble (Aphanitic Extrusive Igneous Rock) — igneous

Basalt Pebble

Aphanitic Extrusive Igneous Rock

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

Basalt River Pebble

Basalt (Mafic volcanic rock)

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Vesicular Basalt (Basalt with vesicular texture) — igneous

Vesicular Basalt

Basalt with vesicular texture

Scoria (Vesicular Mafic Igneous Rock) — igneous

Scoria

Vesicular Mafic Igneous Rock

Basalt Pebble (Aphanitic Igneous Rock / Basalt) — igneous

Basalt Pebble

Aphanitic Igneous Rock / Basalt

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

Basalt with Amygdules

Extrusive Igneous Rock (Mafic)

Vesicular Basalt (Iron-rich) (Scoriaceous Basalt / Oxidized Vesicular Basalt) — igneous

Vesicular Basalt (Iron-rich)

Scoriaceous Basalt / Oxidized Vesicular Basalt

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt with Olivine Phenocrysts (Aphanitic Mafic Volcanic Rock (Basalt)) — igneous

Basalt with Olivine Phenocrysts

Aphanitic Mafic Volcanic Rock (Basalt)

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

Basalt (Beach Pebble)

Extrusive mafic igneous rock

Basalt River Stone (Aphanitic Mafic Igneous Rock) — igneous

Basalt River Stone

Aphanitic Mafic Igneous Rock

Basalt (River Pebble) (Extrusive mafic igneous rock) — igneous

Basalt (River Pebble)

Extrusive mafic igneous rock

Quartz Heart or Arrowhead Shape (Silicon Dioxide (SiO2)) — mineral

Quartz Heart or Arrowhead Shape

Silicon Dioxide (SiO2)

Bumblebee Jasper (Calcite with Arsenic and Manganese oxides (technically a volcanic rock)) — igneous

Bumblebee Jasper

Calcite with Arsenic and Manganese oxides (technically a volcanic rock)

Porphyry (Porphyritic Rock) — igneous

Porphyry

Porphyritic Rock

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Diorite (Intermediate plutonic igneous rock) — igneous

Diorite

Intermediate plutonic igneous rock

Diorite (Dalmatian Stone variant) (Intermediate Phaneritic Igneous Rock) — igneous

Diorite (Dalmatian Stone variant)

Intermediate Phaneritic Igneous Rock

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Pumice (Pumice (Vitreous volcanic rock)) — igneous

Pumice

Pumice (Vitreous volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Milky Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Dacite (Dacite (intermediate volcanic rock high in silica)) — igneous

Dacite

Dacite (intermediate volcanic rock high in silica)

Obsidian (Obsidian (Volcanic Glass, SiO2)) — igneous

Obsidian

Obsidian (Volcanic Glass, SiO2)

Basalt with Iron Oxide staining (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt with Iron Oxide staining

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Lava Rock (Dyed) (Basalt / Volcanic scoria) — igneous

Lava Rock (Dyed)

Basalt / Volcanic scoria

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Basalt (Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)) — Igneous

Basalt

Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)

Likely basalt with a pale mineral-filled vesicle (Vesicular basalt, probably containing calcite or zeolite (uncertain from image)) — igneous

Likely basalt with a pale mineral-filled vesicle

Vesicular basalt, probably containing calcite or zeolite (uncertain from image)

Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Obsidian

Volcanic Glass (predominantly SiO2)