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 (Basalt (Mafic Extrusive)) — igneous

Basalt

Basalt (Mafic Extrusive)

Basalt (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Possible slag or basalt fragment (Indeterminate dark mafic material; likely basalt (plagioclase–pyroxene) or industrial iron-rich slag) — igneous

Possible slag or basalt fragment

Indeterminate dark mafic material; likely basalt (plagioclase–pyroxene) or industrial iron-rich slag

Quartz Druzy on Basalt (Silicon Dioxide (SiO2) on Mafic Volcanic Rock) — Mineral on Igneous Rock

Quartz Druzy on Basalt

Silicon Dioxide (SiO2) on Mafic Volcanic Rock

Mineral on Igneous Rock

Native Copper in Basalt (Cu-element in Mafic Volcanic Rock (Basalt)) — igneous

Native Copper in Basalt

Cu-element in Mafic Volcanic Rock (Basalt)

Basalt with Quartz Vein (Aphanitic Mafic Igneous Rock with Quartz (Silica) Intrusion) — igneous

Basalt with Quartz Vein

Aphanitic Mafic Igneous Rock with Quartz (Silica) Intrusion

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Basalt with Vesicular/Amygdaloidal Alteration (Extrusive Igneous Rock (Mafic)) — igneous

Basalt with Vesicular/Amygdaloidal Alteration

Extrusive Igneous Rock (Mafic)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Mafic igneous rock (primarily Plagioclase feldspar and Pyroxene)) — igneous

Basalt

Mafic igneous rock (primarily Plagioclase feldspar and Pyroxene)

Basalt (Basalt (Aphanitic Mafic Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt with vesicles (Amygdaloidal Basalt) (Amygdaloidal Basalt (predominantly Plagioclase and Pyroxene)) — igneous

Basalt with vesicles (Amygdaloidal Basalt)

Amygdaloidal Basalt (predominantly Plagioclase and Pyroxene)

Basalt (Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8) — igneous

Basalt

Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8

Basalt with Scoria/Vesicular Texture (Vesicular Basalt (Iron-rich/Oxidized)) — igneous

Basalt with Scoria/Vesicular Texture

Vesicular Basalt (Iron-rich/Oxidized)

Basalt (Basalt (dominated by plagioclase feldspar and pyroxene minerals)) — Igneous

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene minerals)

Basalt (Mafic Igneous Rock (composed primarily of pyroxene and calcium-rich plagioclase)) — igneous

Basalt

Mafic Igneous Rock (composed primarily of pyroxene and calcium-rich plagioclase)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

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

Basalt

Basalt (Mafic Aphanitic Igneous Rock)

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Quartz-bearing rock fragment, likely quartz vein in basalt or dark host rock (Quartz (SiO₂) with probable mafic host, possibly basalt or amphibolite) — igneous

Quartz-bearing rock fragment, likely quartz vein in basalt or dark host rock

Quartz (SiO₂) with probable mafic host, possibly basalt or amphibolite

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

Basalt

Basalt (Mafic Extrusive Igneous Rock)

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

Basalt

Mafic Volcanic Rock (composed of Plagioclase Feldspar and Pyroxene)

Dark gray fine-grained rock fragment (Likely basalt (possibly andesite); exact identification is limited by the photograph) — igneous

Dark gray fine-grained rock fragment

Likely basalt (possibly andesite); exact identification is limited by the photograph

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Basalt (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Gabbro (Phaneritic mafic intrusive igneous rock) — igneous

Gabbro

Phaneritic mafic intrusive igneous rock

Vesicular Basalt (Lava Rock) (Vesicular Basalt (comprising plagioclase feldspar and pyroxene group minerals)) — igneous

Vesicular Basalt (Lava Rock)

Vesicular Basalt (comprising plagioclase feldspar and pyroxene group minerals)

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

Basalt (Polished Pebble)

Basalt (Mafic volcanic rock)

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

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Vesicular Basalt (Basalt with vesicular texture) — igneous

Vesicular Basalt

Basalt with vesicular texture

Vesicular Basalt with Quartz (Vesicular Basalt (SiO2 inclusions)) — igneous

Vesicular Basalt with Quartz

Vesicular Basalt (SiO2 inclusions)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Gabbro (Gabbro) — igneous

Gabbro

Gabbro

Basalt (Basalt (composition of plagioclase, pyroxene, and olivine)) — igneous

Basalt

Basalt (composition of plagioclase, pyroxene, and olivine)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

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

Vesicular Basalt

Basalt (Mafic volcanic rock)

Weathered basaltic volcanic rock (Basalt, likely vesicular/amygdaloidal basalt) — igneous

Weathered basaltic volcanic rock

Basalt, likely vesicular/amygdaloidal basalt

Basalt (Basalt (containing Pyroxene, Plagioclase Feldspar, and Olivine)) — igneous

Basalt

Basalt (containing Pyroxene, Plagioclase Feldspar, and Olivine)

Basalt (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Vesicular Basalt (Iron-rich) (Scoriaceous Basalt / Oxidized Vesicular Basalt) — igneous

Vesicular Basalt (Iron-rich)

Scoriaceous Basalt / Oxidized Vesicular Basalt

Vesicular Basalt (Vesicular Basalt) — igneous

Vesicular Basalt

Vesicular Basalt