Rock Identifier

Category

Basalt

Browse basalt specimens identified by the Rock Identifier community.

Learn about Basalt in the encyclopedia

Basalt

Tholeiitic Basalt

Tholeiitic Basalt

Metabasalt

Variolite

Tachylite

Gabbro

Sideromelane

Palagonite

Diabase

Greenstone

Limburgite

Scoria

Likely basalt or scoria fragment (Dark mafic volcanic rock, most likely basalt (plagioclase–pyroxene–olivine) or vesicular scoria) — igneous

Likely basalt or scoria fragment

Dark mafic volcanic rock, most likely basalt (plagioclase–pyroxene–olivine) or vesicular scoria

Greenstone pebble (Likely chlorite- or epidote-bearing metamafic rock (metabasalt/greenschist)) — metamorphic

Greenstone pebble

Likely chlorite- or epidote-bearing metamafic rock (metabasalt/greenschist)

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 (Aphanitic mafic extrusive igneous rock) — igneous

Basalt Pebble

Aphanitic mafic extrusive igneous rock

Basalt (Basalt (extrusive igneous rock)) — igneous

Basalt

Basalt (extrusive igneous rock)

Basalt (Basalt (comprised primarily of plagioclase, pyroxene, and olivine)) — igneous

Basalt

Basalt (comprised primarily of plagioclase, pyroxene, and olivine)

Weathered basaltic cobble (Basalt, likely amygdaloidal or vesicular basalt) — igneous

Weathered basaltic cobble

Basalt, likely amygdaloidal or vesicular basalt

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Fine-grained extrusive igneous rock)) — igneous

Basalt

Basalt (Fine-grained extrusive igneous rock)

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Tumbled dark river pebble, probably basalt (Fine-grained mafic volcanic rock, most likely basalt; exact identification requires testing) — igneous

Tumbled dark river pebble, probably basalt

Fine-grained mafic volcanic rock, most likely basalt; exact identification requires testing

Peridot (Olivine) (Olivine ((Mg, Fe)2SiO4)) — mineral

Peridot (Olivine)

Olivine ((Mg, Fe)2SiO4)

Basalt (Basalt (a mafic extrusive igneous rock)) — Igneous

Basalt

Basalt (a mafic 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 (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Mafic volcanic rock) — igneous

Basalt

Mafic volcanic rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Likely tumbled gray-green stone (Indeterminate; possibly serpentinite, quartzite, or weathered basalt) — mineral

Likely tumbled gray-green stone

Indeterminate; possibly serpentinite, quartzite, or weathered basalt

Okenite (in Zeolite matrix) (Okenite (CaSi2O5 · 2H2O)) — mineral

Okenite (in Zeolite matrix)

Okenite (CaSi2O5 · 2H2O)

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Vesicular basalt (weathered basaltic cobble) (Basalt; primarily plagioclase, pyroxene, and olivine) — igneous

Vesicular basalt (weathered basaltic cobble)

Basalt; primarily plagioclase, pyroxene, and olivine

Vesicular basalt (possibly scoriaceous basalt) (Basalt, chiefly plagioclase feldspar, clinopyroxene, and iron-titanium oxides) — igneous

Vesicular basalt (possibly scoriaceous basalt)

Basalt, chiefly plagioclase feldspar, clinopyroxene, and iron-titanium oxides

Black basalt (likely polished or cut fragment) (Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase, clinopyroxene, and often olivine or magnetite) — igneous

Black basalt (likely polished or cut fragment)

Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase, clinopyroxene, and often olivine or magnetite

Vesicular basalt (likely weathered volcanic rock) (Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine) — igneous

Vesicular basalt (likely weathered volcanic rock)

Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine

Basalt (Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)) — igneous

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Vesicular Basalt (Basalt with vesicular texture) — igneous

Vesicular Basalt

Basalt with vesicular texture

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (containing plagioclase, pyroxene, and olivine)) — igneous

Basalt

Basalt (containing plagioclase, pyroxene, and olivine)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Porphyritic Basalt (Leopard Palm Stone) (Porphyritic Mafic Volcanic Rock) — igneous

Porphyritic Basalt (Leopard Palm Stone)

Porphyritic Mafic Volcanic Rock

Vesicular Basalt (Aphanitic Mafic Igneous Rock (with Vesicular Texture)) — igneous

Vesicular Basalt

Aphanitic Mafic Igneous Rock (with Vesicular Texture)