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

Black Obsidian (Obsidian, SiO2 (amorphous)) — Igneous rock (Volcanic glass)

Black Obsidian

Obsidian, SiO2 (amorphous)

Igneous rock (Volcanic glass)

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

Basalt with Quartz Vein

Extrusive Igneous Rock / Volcanic Rock

River Stone (Basalt or fine-grained Schist) (Mafic Igneous Rock / Volcanic Basalt) — igneous

River Stone (Basalt or fine-grained Schist)

Mafic Igneous Rock / Volcanic Basalt

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

Pumice

Pumice (Volcanic glass / Felsic igneous rock)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Pumice (Pumice) — igneous

Pumice

Pumice

Black Obsidian (Volcanic glass) — igneous

Black Obsidian

Volcanic glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Snowflake Obsidian (Obsidian with Cristobalite inclusions) — igneous

Snowflake Obsidian

Obsidian with Cristobalite inclusions

Pumice (Pumice (Vesicular Rhyolite/Andesite)) — igneous

Pumice

Pumice (Vesicular Rhyolite/Andesite)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Pumice (Pumice (Vesicular Rhyolite/Andesite)) — igneous

Pumice

Pumice (Vesicular Rhyolite/Andesite)

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

Obsidian (Obsidian (volcanic glass)) — igneous

Obsidian

Obsidian (volcanic glass)

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Pumice (Pumice (Volcanic Rock)) — igneous

Pumice

Pumice (Volcanic Rock)

Pumice (Vesicular volcanic glass) — igneous

Pumice

Vesicular volcanic glass

Snowflake Obsidian (Spherulitic Obsidian (Amorphous Volcanic Glass with Cristobalite inclusions)) — igneous

Snowflake Obsidian

Spherulitic Obsidian (Amorphous Volcanic Glass with Cristobalite inclusions)

Pumice (Volcanic glass / Pumiceous rock) — igneous

Pumice

Volcanic glass / Pumiceous rock

Pumice (Pumice (volcanic glass)) — igneous

Pumice

Pumice (volcanic glass)

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

Black Obsidian

Volcanic Glass (SiO2 with impurities)

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

Pumice

Pumice (Vesicular Felsic Igneous Rock)

Mahogany Obsidian (Volcanic Glass with Hematite or Magnetite inclusions (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite or Magnetite inclusions (SiO2 + Fe2O3)

Pumice (Pumice (volcanic glass)) — igneous

Pumice

Pumice (volcanic glass)

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

Pumice

Pumice (Vesicular Felsic Igneous Rock)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Rhyolitic Tuff (Rhyolitic Tuff / Pyroclastic rock) — igneous

Rhyolitic Tuff

Rhyolitic Tuff / Pyroclastic rock

Educational Geologic Collection (Mixed Mineral and Rock Collection (Various compositions)) — mineral

Educational Geologic Collection

Mixed Mineral and Rock Collection (Various compositions)

Obsidian (Volcanic Glass (Amorphous Silicon Dioxide)) — igneous

Obsidian

Volcanic Glass (Amorphous Silicon Dioxide)

Apache Tear (Obsidian (Volcanic Glass)) — igneous

Apache Tear

Obsidian (Volcanic Glass)

Pumice (or Volcanic Tuff / Ash) (Pumice / Pyroclastic rock) — igneous

Pumice (or Volcanic Tuff / Ash)

Pumice / Pyroclastic rock

Pumice (Vesicular volcanic glass) — igneous

Pumice

Vesicular volcanic glass

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

Pumice

Pumice (a highly vesicular extrusive volcanic glass)

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

Pumice

Pumice (Vesicular Felsic Igneous Rock)

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)