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

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt River Stone (Basaltic Igneous Rock) — igneous

Basalt River Stone

Basaltic Igneous Rock

Basalt with Calcite Veins (Aphanitic mafic volcanic rock with CaCO3 inclusions) — igneous

Basalt with Calcite Veins

Aphanitic mafic volcanic rock with CaCO3 inclusions

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

Basalt

Basalt (Fine-grained extrusive igneous rock)

Basalt (Porphyritic Basalt) (Extrusive Igneous Rock) — igneous

Basalt (Porphyritic Basalt)

Extrusive Igneous Rock

Dark gray weathered pebble, likely basalt (Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine or iron oxides) — igneous

Dark gray weathered pebble, likely basalt

Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine or iron oxides

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 (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 (Concrete Aggregate) (Basalt (Mafic volcanic rock)) — igneous

Basalt (Concrete Aggregate)

Basalt (Mafic volcanic rock)

Rounded vesicular volcanic rock, likely pumice or scoriaceous basalt (Vesicular basalt (probable); possibly pumice, composed mainly of plagioclase, pyroxene, and volcanic glass) — igneous

Rounded vesicular volcanic rock, likely pumice or scoriaceous basalt

Vesicular basalt (probable); possibly pumice, composed mainly of plagioclase, pyroxene, and volcanic glass

Amygdaloidal basalt pebble (Vesicular basalt, locally calcite- or quartz-filled amygdales) — igneous

Amygdaloidal basalt pebble

Vesicular basalt, locally calcite- or quartz-filled amygdales

Dark green amphibolite (likely hornblende schist) (Amphibolite; chiefly hornblende amphibole and plagioclase feldspar, with possible biotite, epidote, and magnetite) — metamorphic

Dark green amphibolite (likely hornblende schist)

Amphibolite; chiefly hornblende amphibole and plagioclase feldspar, with possible biotite, epidote, and magnetite

Basalt pebble (Basalt; fine-grained mafic volcanic rock, typically plagioclase + pyroxene ± olivine) — igneous

Basalt pebble

Basalt; fine-grained mafic volcanic rock, typically plagioclase + pyroxene ± olivine

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Olivine Basalt (with Epidote and Serpentine) (Mafic Volcanic Rock (Basalt)) — igneous

Olivine Basalt (with Epidote and Serpentine)

Mafic Volcanic Rock (Basalt)

Basalt Pebble (Extrusive mafic igneous rock) — igneous

Basalt Pebble

Extrusive mafic igneous rock

Dark basalt or fine-grained mafic rock (Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine or iron-titanium oxides) — igneous

Dark basalt or fine-grained mafic rock

Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine or iron-titanium oxides

Weathered volcanic rock, likely basalt (Basalt; commonly composed of plagioclase, pyroxene, and iron-rich oxides) — igneous

Weathered volcanic rock, likely basalt

Basalt; commonly composed of plagioclase, pyroxene, and iron-rich oxides

Basalt (Basalt (Mafic igneous rock)) — igneous

Basalt

Basalt (Mafic 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

Vesicular basalt pebble with pale mineral infill (Basalt, likely amygdaloidal basalt; vesicles may contain calcite, zeolite, or silica) — igneous

Vesicular basalt pebble with pale mineral infill

Basalt, likely amygdaloidal basalt; vesicles may contain calcite, zeolite, or silica

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

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Rounded basalt cobble (Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase, pyroxene, and commonly olivine) — igneous

Rounded basalt cobble

Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase, pyroxene, and commonly olivine

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

Basalt

Basalt (a mafic extrusive igneous rock)

Basalt (Vesicular basalt; chiefly plagioclase, clinopyroxene, olivine, and volcanic glass) — igneous

Basalt

Vesicular basalt; chiefly plagioclase, clinopyroxene, olivine, and volcanic glass

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Basalt (Basalt (comprising Plagioclase feldspar, Pyroxene, and Olivine)) — igneous

Basalt

Basalt (comprising Plagioclase feldspar, Pyroxene, and Olivine)