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 Andesite (Porphyritic intermediate volcanic rock (Andesite)) — Igneous

Porphyritic Andesite

Porphyritic intermediate volcanic rock (Andesite)

Andesite (Intermediate Volcanic Rock (Andesite)) — igneous

Andesite

Intermediate Volcanic Rock (Andesite)

Pumice (Pumicite / Vesicular Rhyolite) — igneous

Pumice

Pumicite / Vesicular Rhyolite

Basalt with Plagioclase Feldspar (Basalt (mafic extrusive igneous rock) with plagioclase feldspar phenocrysts) — Igneous

Basalt with Plagioclase Feldspar

Basalt (mafic extrusive igneous rock) with plagioclase feldspar phenocrysts

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Rhyolite (Porphyritic) (Rhyolite (Felsic Extrusive Igneous Rock)) — igneous

Rhyolite (Porphyritic)

Rhyolite (Felsic Extrusive Igneous Rock)

Basalt (Amygdaloidal) (Amygdaloidal Basalt) — igneous

Basalt (Amygdaloidal)

Amygdaloidal Basalt

Basalt pebble (Aphanitic Mafic Volcanic Rock (Fe/Mg rich)) — igneous

Basalt pebble

Aphanitic Mafic Volcanic Rock (Fe/Mg rich)

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Porphyry (Porphyritic Igneous Rock) — igneous

Porphyry

Porphyritic Igneous Rock

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Dalmatian Jasper (Peralkaline Quartz-feldspathic Rock (Arfvedsonite-bearing)) — igneous

Dalmatian Jasper

Peralkaline Quartz-feldspathic Rock (Arfvedsonite-bearing)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt with Olivine (Peridot) (Basalt containing (Mg,Fe)2SiO4) — igneous

Basalt with Olivine (Peridot)

Basalt containing (Mg,Fe)2SiO4

Weathered iron-rich volcanic rock (Likely altered basalt or andesite with iron-oxide staining) — igneous

Weathered iron-rich volcanic rock

Likely altered basalt or andesite with iron-oxide staining

Blue Chalcedony (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Blue Chalcedony

Chalcedony (Silicon Dioxide, SiO2)

Porphyritic Andesite (Intermediate Volcanic Rock - Andesite) — Igneous

Porphyritic Andesite

Intermediate Volcanic Rock - Andesite

Basalt (Basalt (Mafic Volcanic Rock)) — igneous

Basalt

Basalt (Mafic Volcanic Rock)

Basalt (Basalt (extrusive volcanic rock)) — igneous

Basalt

Basalt (extrusive volcanic rock)

Basalt (Basalt (extrusive volcanic rock)) — igneous

Basalt

Basalt (extrusive volcanic rock)

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

Basalt Pebble

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Scoria (Scoria (Vesicular Basaltic Rock)) — igneous

Scoria

Scoria (Vesicular Basaltic Rock)

Quartz (Milky Quartz/Citrine Type) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz/Citrine Type)

Silicon Dioxide (SiO2)

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Basalt (Extrusive igneous rock (Mafic)) — igneous

Basalt

Extrusive igneous rock (Mafic)

Scoria (Scoria (vesicular basalt-andesite)) — igneous

Scoria

Scoria (vesicular basalt-andesite)

Basalt with Amygdales (Amygdaloidal Basalt) — igneous

Basalt with Amygdales

Amygdaloidal Basalt

Rhyolite (Leopard Skin Jasper) (Rhyolite (Silicon Dioxide with impurities)) — igneous

Rhyolite (Leopard Skin Jasper)

Rhyolite (Silicon Dioxide with impurities)

Basalt (with possible quartz/calcite inclusion) (Extrusive mafic igneous rock) — igneous

Basalt (with possible quartz/calcite inclusion)

Extrusive mafic igneous rock

Basalt (Mafic Extrusive Igneous Rock) — igneous

Basalt

Mafic Extrusive Igneous Rock

Vesicular Basalt (Extrusive mafic igneous rock) — igneous

Vesicular Basalt

Extrusive mafic igneous rock

Basalt River Pebble (Aphanitic Mafic Igneous Rock) — igneous

Basalt River Pebble

Aphanitic Mafic Igneous Rock

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Basalt River Pebble

Basalt (extrusive volcanic rock)

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

Basalt River Pebble

Basalt (Mafic volcanic rock)

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

Porphyritic Basalt

Basalt (Mafic volcanic rock)

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

Basalt (River Stone)

Basalt (Mafic volcanic rock)

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

Basalt Pebble

Basalt (Mafic volcanic rock)

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

Basalt (Beach Pebble)

Extrusive mafic volcanic rock

Basalt (Vesicular or Scoriaceous) (Aphanitic Mafic Volcanic Rock) — igneous

Basalt (Vesicular or Scoriaceous)

Aphanitic Mafic Volcanic Rock