Vesicular Basalt
Extrusive Mafic Igneous Rock (Vesicular Basalt)
Category
Browse igneous rock specimens identified by the Rock Identifier community.
Vesicular Basalt
Extrusive Mafic Igneous Rock (Vesicular Basalt)
Basalt with Quartz/Calcite Veins
Aphanitic Mafic Igneous Rock with Hydrothermal Veining
Basalt Column Section
Columnar Basalt (Mafic Extrusive Igneous Rock)
Pumice
Pumice (a highly vesicular extrusive igneous rock)
Weathered Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt with Quartz/Calcite Veins
Extrusive mafic igneous rock with hydrothermal mineralization
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt with Calcite Veining
Aphanitic Mafic Igneous Rock (Basalt) with CaCO3
Basalt River Pebble
Mafic Igneous Rock (Fine-grained Basalt)
Basalt with Iron Oxidation
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt with Iron Oxidation
Vesicular Basalt (Aphanitic Mafic Igneous Rock)
Vesicular Basalt (Iron Scoria)
Aphanitic Mafic Igneous Rock with Vesicular Texture
Vesicular Basalt with Calcification
Vesicular Basalt (Aphanitic extrusive igneous rock)
Basalt (Stream-worn Cobble)
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Quartz Vein in Rhyolite
Silicon Dioxide (SiO2) in extrusive igneous rock
Granite
Granite (Phaneritic Quartz-Feldspar Igneous Rock)
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt River Pebble
Basalt (fine-grained mafic igneous rock)
Vesicular Basalt
Vesicular Basalt (Aphanitic Mafic Igneous Rock)
Scoria
Extrusive Igneous Rock (Basaltic/Andesitic Composition)
Diorite
Phaneritic Intrusive Igneous Rock (Intermediate Composition)
Granite
Phaneritic Acidic Igneous Rock (Granite Group)
Granodiorite
Granodiorite (calc-alkaline phaneritic igneous rock)
Quartz on Basalt
Silicon Dioxide (SiO2) on Mafic Igneous Rock
Basalt with Pahoehoe flow texture
Vesicular Basalt (Aphanitic Mafic Igneous Rock)
Quartz crystals on Basalt
SiO2 (Quartz) on Mafic Igneous Rock (Basalt)
Pink Granite
Phaneritic Igneous Rock (Quartz-Feldspar dominant)
Pink Granite
Pink Granite (Felsic Intrusive Igneous Rock)
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Pegmatite
Coarse-grained Igneous Rock (Granitic Pegmatite)
Pumice
Pumice (Vesicular felsic extrusive igneous rock)
Granite
Phaneritic plutonic igneous rock (SiO2-rich)
Vesicular Basalt
Extrusive Mafic Igneous Rock with Vesicular Texture
Granite
Granite (silica-rich intrusive igneous rock)
Pink Granite
Granite (Phaneritic igneous rock rich in Orthoclase)
Granodiorite
Phaneritic intrusive igneous rock (intermediate composition)
Granite (Dioritic or Hornblende-rich)
Phaneritic Plutonic Felsic to Intermediate Igneous Rock
Vesicular Basalt (Scoria)
Aphanitic Mafic Igneous Rock (Vesicular Basalt)
Basalt with Quartz Veins
Mafic Igneous Rock with Quartz (SiO2) intrusions
Vesicular Rhyolite
Extrusive igneous rock (high-silica rhyolite)
Granite (with Orthoclase and Quartz)
Phaneritic Felsic Igneous Rock (KAlSi3O8 + SiO2)