Rock Identifier

Category

Basalt

Browse basalt specimens identified by the Rock Identifier community.

Learn about Basalt in the encyclopedia

Basalt

Basalt

Tholeiitic Basalt

Tholeiitic Basalt

Metabasalt

Metabasalt

Variolite

Variolite

Tachylite

Tachylite

Gabbro

Gabbro

Sideromelane

Sideromelane

Palagonite

Palagonite

Diabase

Diabase

Greenstone

Greenstone

Limburgite

Limburgite

Scoria

Scoria

Peridotite (Olivine/Peridot) (Peridotite (comprising (Mg,Fe)2SiO4)) — igneous

Peridotite (Olivine/Peridot)

Peridotite (comprising (Mg,Fe)2SiO4)

Peridotite (Peridotite (primarily Olivine and Pyroxene)) — igneous

Peridotite

Peridotite (primarily Olivine and Pyroxene)

Vesicular Basalt with Siltstone (Mafic Volcanic Rock (Basaltic Composition)) — igneous

Vesicular Basalt with Siltstone

Mafic Volcanic Rock (Basaltic Composition)

Basalt-Amugydule (Amygdaloidal Basalt) (Aphanitic Mafic Igneous Rock with Vesicle Infillings) — igneous

Basalt-Amugydule (Amygdaloidal Basalt)

Aphanitic Mafic Igneous Rock with Vesicle Infillings

Basalt with Quartz Veins (Basalt (complex silicate) with Quartz (SiO2) intrusions) — igneous

Basalt with Quartz Veins

Basalt (complex silicate) with Quartz (SiO2) intrusions

Basalt (Water-worn Pebble) (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt (Water-worn Pebble)

Basalt (Aphanitic Mafic Igneous Rock)

Quartz crystals on Basalt (SiO2 (Quartz) on Mafic Igneous Rock (Basalt)) — igneous

Quartz crystals on Basalt

SiO2 (Quartz) on Mafic Igneous Rock (Basalt)

Crushed Stone (Basalt/Gabbro) (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Crushed Stone (Basalt/Gabbro)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Diabase (Diabase (also known as Dolerite)) — igneous

Diabase

Diabase (also known as Dolerite)

Porphyritic Basalt (Flower Stone) (Basalt with Feldspar phenocrysts) — igneous

Porphyritic Basalt (Flower Stone)

Basalt with Feldspar phenocrysts

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

Basalt (River Pebble)

Basalt (extrusive mafic rock)

Basalt (Lava Rock) and Dyed Glass/Quartz (Scoria (Vesicular Basalt)) — igneous

Basalt (Lava Rock) and Dyed Glass/Quartz

Scoria (Vesicular Basalt)

Porphyritic Basalt (Amygdaloidal Porphyritic Basalt) — igneous

Porphyritic Basalt

Amygdaloidal Porphyritic Basalt

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

Basalt River Pebble

Basalt (Aphanitic Mafic Volcanic Rock)

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

Vesicular Basalt (Lava Rock)

Aphanitic Mafic Igneous Rock

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

Basalt Pebble

Basalt (Extrusive Mafic Igneous)

Yellow Agate (Silicon Dioxide (SiO2)) — mineral

Yellow Agate

Silicon Dioxide (SiO2)

Native Copper (Native Copper (Cu)) — mineral

Native Copper

Native Copper (Cu)

Basalt (Vesicular or Weathered) (Aphanitic Mafic Igneous Rock (Basalt)) — igneous

Basalt (Vesicular or Weathered)

Aphanitic Mafic Igneous Rock (Basalt)

Chalcedony (specifically Agate or Carnelian) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (specifically Agate or Carnelian)

Silicon Dioxide (SiO2)

River Basalt (Cobble) (Mafic Igneous Rock (Fine-grained Basalt)) — Igneous

River Basalt (Cobble)

Mafic Igneous Rock (Fine-grained Basalt)

Red Scoria (Lava Rock) (Scoria (Vesicular Basalt)) — igneous

Red Scoria (Lava Rock)

Scoria (Vesicular Basalt)

Native Copper in Basalt (Cuprum (with Host Basalt)) — igneous

Native Copper in Basalt

Cuprum (with Host Basalt)

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

Basalt (River Pebble)

Extrusive Mafic Igneous Rock

Basalt (Road Aggregate Specimen) (Aphanitic mafic volcanic rock) — igneous

Basalt (Road Aggregate Specimen)

Aphanitic mafic volcanic rock

Basalt with Quartz Veining (Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt with Quartz Veining

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt with Iron Oxide staining (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt with Iron Oxide staining

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

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

Basalt Pebble

Basalt (Mafic Volcanic Rock)

Greenstone (Protolith: Basaltic rock) — metamorphic

Greenstone

Protolith: Basaltic rock

Greenstone (Greenschist / Meta-basalt) — metamorphic

Greenstone

Greenschist / Meta-basalt

$Conchoidal Basalt Pebble (Basalt with conchoidal fracturing) — igneous$

Conchoidal Basalt Pebble

Basalt with conchoidal fracturing

Scoria (Lava Rock) (Vesicular Basalt / Scoria) — igneous

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Vesicular Basalt (or Scoraceous Basalt) (Basalt with vesicular texture) — igneous

Vesicular Basalt (or Scoraceous Basalt)

Basalt with vesicular texture

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

Basalt River Rock

Basalt (Aphanitic Mafic Igneous Rock)

Granodiorite (Granodiorite (NaAlSi3O8 to CaAl2Si2O8 / SiO2)) — Igneous

Granodiorite

Granodiorite (NaAlSi3O8 to CaAl2Si2O8 / SiO2)

Basalt Pebble (Aphanitic Mafic Igneous Rock) — igneous

Basalt Pebble

Aphanitic Mafic Igneous Rock

Vesicular Basalt (Basalt with vesicular texture) — igneous

Vesicular Basalt

Basalt with vesicular texture

Basalt River Pebble (Extrusive Mafic Basalt) — igneous

Basalt River Pebble

Extrusive Mafic Basalt

Scoria (Lava Rock) (Scoria (Vesicular Basalt)) — igneous

Scoria (Lava Rock)

Scoria (Vesicular Basalt)

Scoria (Lava Rock) (Vesicular Basalt / Scoria) — igneous

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Basalt (River Stone) (Basalt (Extrusive Igneous Rock)) — igneous

Basalt (River Stone)

Basalt (Extrusive Igneous Rock)

Basalt River Pebble (Aphanitic Mafic Igneous Rock) — igneous

Basalt River Pebble

Aphanitic Mafic Igneous Rock