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

Pumice (Pumice (Alveolar Rhyolite / Dacite / Andesite)) — igneous

Pumice

Pumice (Alveolar Rhyolite / Dacite / Andesite)

Pumice (Pumice (Felsic vesicular volcanic glass)) — igneous

Pumice

Pumice (Felsic vesicular volcanic glass)

Snowflake Obsidian (Volcanic glass with Phenocrysts (SiO2 with Cristobalite inclusions)) — igneous

Snowflake Obsidian

Volcanic glass with Phenocrysts (SiO2 with Cristobalite inclusions)

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

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Pumice (Pumice (a frothy volcanic glass)) — igneous

Pumice

Pumice (a frothy volcanic glass)

Agate (Carnelian / Chalcedony) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Agate (Carnelian / Chalcedony)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Pumice (Pumice (Vesicular volcanic glass)) — Igneous

Pumice

Pumice (Vesicular volcanic glass)

Quartz Druze (Crystalline Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Druze (Crystalline Quartz)

Silicon Dioxide (SiO2)

Pumice (Pumice (extrusive volcanic rock)) — igneous

Pumice

Pumice (extrusive volcanic rock)

Apache Tear (Hydrated Obsidian (Volcanic Glass)) — igneous

Apache Tear

Hydrated Obsidian (Volcanic Glass)

Quartz Vein in Matrix (Silicon Dioxide (SiO2) within Rhyolitic or Granitic Matrix) — igneous

Quartz Vein in Matrix

Silicon Dioxide (SiO2) within Rhyolitic or Granitic Matrix

Snowflake Obsidian (Volcanic Glass with Cristobalite inclusions) — igneous

Snowflake Obsidian

Volcanic Glass with Cristobalite inclusions

Quartz Crystal (Amethyst) (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal (Amethyst)

Silicon Dioxide (SiO2)

Pumice (Pumicite) — igneous

Pumice

Pumicite

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Pumice (Pumice (Vesicular Felsic Igneous Rock)) — igneous

Pumice

Pumice (Vesicular Felsic Igneous Rock)

Pumice (Pumice (extrusive volcanic rock)) — igneous

Pumice

Pumice (extrusive volcanic rock)

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

Vesicular Basalt (Scoria)

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Scoria (Lava Rock) (Scoria (Vesicular Basaltic Glass/Rock)) — igneous

Scoria (Lava Rock)

Scoria (Vesicular Basaltic Glass/Rock)

Pumice (Pumice (Volcanic Rock / Glass Froth)) — igneous

Pumice

Pumice (Volcanic Rock / Glass Froth)

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

Basalt with Plagioclase or Quartz Inclusion (Melanocratic Basalt with Porphyritic Inclusion) — igneous

Basalt with Plagioclase or Quartz Inclusion

Melanocratic Basalt with Porphyritic Inclusion

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

Basalt Pebble

Extrusive Igneous Rock (Mafic)

Pumice (Pumice (Volcanic Rock / Glass Froth)) — igneous

Pumice

Pumice (Volcanic Rock / Glass Froth)

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

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Snowflake Obsidian (Obsidian with Cristobalite inclusions (70–75% SiO2)) — igneous

Snowflake Obsidian

Obsidian with Cristobalite inclusions (70–75% SiO2)

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

Pumice (Pumice (Vesicular volcanic glass / Rhyolite or Trachyte)) — igneous

Pumice

Pumice (Vesicular volcanic glass / Rhyolite or Trachyte)

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

Pumice (Pumice (Volcanic glass / Felsic extrusive rock)) — igneous

Pumice

Pumice (Volcanic glass / Felsic extrusive rock)

Obsidian (Obsidian (Amorphous volcanic glass)) — igneous

Obsidian

Obsidian (Amorphous volcanic glass)

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

Pumice (Vesicular Rhyolite / Glassy Igneous Rock) — igneous

Pumice

Vesicular Rhyolite / Glassy Igneous Rock

Polished Black Obsidian (Volcanic Glass (70-75% SiO2)) — igneous

Polished Black Obsidian

Volcanic Glass (70-75% SiO2)

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Agate (Carnelian Agate with Quartz Matrix) (Silicon Dioxide (SiO2)) — mineral

Agate (Carnelian Agate with Quartz Matrix)

Silicon Dioxide (SiO2)

Chalcedony (Agate/Quartz) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Quartz)

Silicon Dioxide (SiO2)

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

Pumice

Pumice (a highly vesicular volcanic glass)

Pumice (Pumice (Volcanic Rock / Glass Froth)) — igneous

Pumice

Pumice (Volcanic Rock / Glass Froth)