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

Basalt (with possible Serpentinization) (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible Serpentinization)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt with Olivine Phenocrysts (Aphanitic Mafic Volcanic Rock (Basalt)) — igneous

Basalt with Olivine Phenocrysts

Aphanitic Mafic Volcanic Rock (Basalt)

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

Basalt Beach Pebble

Basalt (Mafic volcanic rock)

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

Basalt River Stone

Basalt (Aphanitic Mafic Volcanic Rock)

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

Basalt (River Pebble)

Extrusive mafic igneous rock

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

Basalt (River Pebble)

Extrusive Mafic Igneous Rock

Rutilated Prehnite (Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions) — mineral

Rutilated Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions

Labradorite (Labradorite (Ca,Na)(Al,Si)4O8) — mineral

Labradorite

Labradorite (Ca,Na)(Al,Si)4O8

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

Basalt River Pebble

Basalt (Aphanitic Mafic Igneous Rock)

Labradorite ((Ca, Na)(Al, Si)4O8) — mineral

Labradorite

(Ca, Na)(Al, Si)4O8

Bauxite (Alumina ore (Mixture of Gibbsite, Boehmite, and Diaspore)) — sedimentary

Bauxite

Alumina ore (Mixture of Gibbsite, Boehmite, and Diaspore)

Labradorite (Labradorite ((Ca, Na)(Al, Si)4O8)) — mineral

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Labradorite ((Ca,Na)(Al,Si)4O8) — mineral

Labradorite

(Ca,Na)(Al,Si)4O8

Cavansite (Cavansite (Ca(VO)Si4O10·4H2O)) — mineral

Cavansite

Cavansite (Ca(VO)Si4O10·4H2O)

River Pebbles (White Quartz and Basalt mix) (Mixed Clastic Sedimentary Assemblage (SiO2 and Mafic Volcanics)) — sedimentary

River Pebbles (White Quartz and Basalt mix)

Mixed Clastic Sedimentary Assemblage (SiO2 and Mafic Volcanics)

Vesicular Basalt (Extrusive mafic igneous rock) — igneous

Vesicular Basalt

Extrusive mafic igneous rock

Basalt River Pebbles (Mafic Volcanic Rock (主要成分: SiO2, MgO, FeO)) — igneous

Basalt River Pebbles

Mafic Volcanic Rock (主要成分: SiO2, MgO, FeO)

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

Basalt Pebble

Mafic Igneous Rock (Basalt)

River Rock (Basalt) (Basalt (SiO2 range: 45-52%)) — igneous

River Rock (Basalt)

Basalt (SiO2 range: 45-52%)

Gravel (likely Basalt or Greywacke) (Basalt (Mafic volcanic rock)) — igneous

Gravel (likely Basalt or Greywacke)

Basalt (Mafic volcanic rock)

Basalt with Quartz/Calcite vein (Basalt (Mafic Igneous Rock)) — igneous

Basalt with Quartz/Calcite vein

Basalt (Mafic Igneous Rock)

Basalt with Phenocrysts (Porphyritic Basalt) (Porphyritic Basalt (primarily Plagioclase and Pyroxene)) — igneous

Basalt with Phenocrysts (Porphyritic Basalt)

Porphyritic Basalt (primarily Plagioclase and Pyroxene)

Basalt Pebble (Extrusive Aphanitic Basalt) — igneous

Basalt Pebble

Extrusive Aphanitic Basalt

River-worn Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

River-worn Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt River Stone (Basalt (Mafic volcanic rock)) — igneous

Basalt River Stone

Basalt (Mafic volcanic rock)

Basalt (tumbled/water-worn) (Extrusive mafic igneous rock) — igneous

Basalt (tumbled/water-worn)

Extrusive mafic igneous rock

Basalt (River Pebble) (Extrusive Magic Igneous Rock (Mainly Plagioclase and Pyroxene)) — igneous

Basalt (River Pebble)

Extrusive Magic Igneous Rock (Mainly Plagioclase and Pyroxene)

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

Basalt (River Cobble)

Basalt (Mafic Extrusive Igneous Rock)

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

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Basalt Scoria (Scoria (vesicular basalt)) — igneous

Basalt Scoria

Scoria (vesicular basalt)

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

Diabase (also known as Dolerite)

Diabase / Dolerite

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Quartz in Basalt (Xenocryst) (Silicon Dioxide (SiO2) in Mafic Igneous Volcanic Rock) — Igneous

Quartz in Basalt (Xenocryst)

Silicon Dioxide (SiO2) in Mafic Igneous Volcanic Rock

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

Basalt Pebble

Basalt (Mafic Volcanic Rock)

Basalt Outcropping (Aphanitic Mafic Igneous Rock) — igneous

Basalt Outcropping

Aphanitic Mafic Igneous Rock

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

Basalt Pebble

Basalt (Mafic volcanic rock)

Vesicular Basalt (Extrusive Mafic Igneous Rock) — igneous

Vesicular Basalt

Extrusive Mafic Igneous Rock

Amygdaloidal Basalt (Basalt (Igneous Volcanic Rock with secondary mineral infilling)) — igneous

Amygdaloidal Basalt

Basalt (Igneous Volcanic Rock with secondary mineral infilling)

Diabase (Dolerite) (Mafic Intrusive Igneous Rock) — igneous

Diabase (Dolerite)

Mafic Intrusive Igneous Rock

Granodiorite Pebble (Granodiorite) — igneous

Granodiorite Pebble

Granodiorite

Porphyritic Andesite (Intermediate Volcanic Rock - Andesite) — Igneous

Porphyritic Andesite

Intermediate Volcanic Rock - Andesite

Granodiorite (Granodiorite (Intermediate intrusive igneous rock)) — igneous

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)