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

Rock Salt

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Black Obsidian

Obsidian

Pink Obsidian

Sideromelane

Carbonatite

Tachylite

Agate (Silicon dioxide (SiO2)) — gemstone

Agate

Silicon dioxide (SiO2)

Agate (Silicon dioxide (chalcedony, SiO2)) — sedimentary

Agate

Silicon dioxide (chalcedony, SiO2)

Agate (Silicon dioxide, SiO2) — sedimentary

Agate

Silicon dioxide, SiO2

Agate (Silicon dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (Chalcedony), SiO2

Agate (Silicon dioxide (chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (chalcedony), SiO2

Tumbled Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Tumbled Agate

Silicon Dioxide (Chalcedony), SiO2

Agate (Silicon dioxide (Chalcedony, SiO2)) — sedimentary

Agate

Silicon dioxide (Chalcedony, SiO2)

Agate (Silicon dioxide (chalcedony), SiO2) — sedimentary

Agate

Silicon dioxide (chalcedony), SiO2

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

Agate

Silicon Dioxide (Chalcedony), SiO2

Blue Banded Agate (Silicon Dioxide (Chalcedony), SiO2) — gemstone

Blue Banded Agate

Silicon Dioxide (Chalcedony), SiO2

Mica (Biotite or Phlogopite variety) (Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)) — mineral

Mica (Biotite or Phlogopite variety)

Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)

Basalt Pebble (Extrusive igneous rock) — igneous

Basalt Pebble

Extrusive igneous rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Basalt pebble (Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine) — igneous

Basalt pebble

Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine

Rounded basalt cobble (Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, with minor olivine and iron oxides) — igneous

Rounded basalt cobble

Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, with minor olivine and iron oxides

Iron-rich volcanic rock fragment (likely basalt or weathered scoria) (Basaltic rock; primarily plagioclase feldspar, pyroxene, and iron oxides) — igneous

Iron-rich volcanic rock fragment (likely basalt or weathered scoria)

Basaltic rock; primarily plagioclase feldspar, pyroxene, and iron oxides

Vesicular basalt (Basalt, chiefly plagioclase, pyroxene, and olivine) — igneous

Vesicular basalt

Basalt, chiefly plagioclase, pyroxene, and olivine

Dark gray basalt or andesite cobble (Fine-grained mafic to intermediate volcanic rock; commonly plagioclase feldspar, pyroxene, and possibly olivine) — igneous

Dark gray basalt or andesite cobble

Fine-grained mafic to intermediate volcanic rock; commonly plagioclase feldspar, pyroxene, and possibly olivine

Rounded weathered rock, likely basalt or andesite (Fine-grained mafic to intermediate volcanic rock; precise identification requires testing) — igneous

Rounded weathered rock, likely basalt or andesite

Fine-grained mafic to intermediate volcanic rock; precise identification requires testing

Pumice or vesicular volcanic rock (Pumice; chiefly volcanic glass with variable feldspar, quartz, and other silicates) — igneous

Pumice or vesicular volcanic rock

Pumice; chiefly volcanic glass with variable feldspar, quartz, and other silicates

Scoria (vesicular volcanic rock) (Basaltic scoria; chiefly plagioclase, pyroxene, olivine, and volcanic glass) — igneous

Scoria (vesicular volcanic rock)

Basaltic scoria; chiefly plagioclase, pyroxene, olivine, and volcanic glass

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Scoria (Extrusive Igneous Rock) — igneous

Scoria

Extrusive Igneous Rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

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

Basalt Pebble (Shaped)

Extrusive Igneous Rock