Basalt
Basalt (Mafic volcanic rock)
Category
Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.
Basalt
Basalt (Mafic volcanic rock)
Basalt (Polished pebble)
Basalt (Aphanitic mafic volcanic rock)
Basalt (Vesicular and Scoria)
Basalt (extrusive volcanic rock)
Basalt
Extrusive Mafic Igneous Rock
Basalt Cobble
Aphanitic Mafic Igneous Rock (Basalt)
Basalt with inclusion
Basalt (Aphanitic-Porphyritic texture)
Basalt (Stream-worn Cobble)
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt (Vesicular/Scoria)
Vesicular Basalt
Basalt (Vesicular)
Mafic Volcanic Rock (rich in Magnesium and Iron)
Vesicular Basalt
Extrusive mafic igneous rock (primarily Plagioclase Feldspar and Pyroxene)
Vesicular Basalt
Basalt (with vesicular texture)
Basalt with Scoria
Mafic Volcanic Rock (Basalt/Scoria)
Basalt (Water-worn Pavement Stone)
Basalt (Mafic Extrusive Igneous Rock)
Granodiorite
Granodiorite (Na,Ca)(Al,Si)4O8
Basalt with Scoria
Amygdaloidal Basalt / Vesicular Basalt
Granodiorite with Biotite Mica
Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite Mica)
Basalt
Extrusive Mafic Igneous Rock
Basalt River Cobble
Basalt (Aphanitic Mafic Volcanic Rock)
Basalt with Porphyritic Texture
Porphyritic Basalt
Basalt (River Stone)
Basalt
Basalt (River Pebble)
Extrusive mafic igneous rock
Basalt (River Pebble)
Basalt
Basalt (Drill Core)
Mafic Volcanic Rock (Basalt)
Black River Stone (likely Basalt or Chert)
Basalt (primarily Plagioclase Feldspar and Pyroxene)
Basalt
Extrusive Igneous Basalt (contains Plagioclase Feldspar and Pyroxene)
Basalt
Basalt (Mafic volcanic rock)
Basalt
Basalt (containing Pyroxene, Plagioclase Feldspar, and Olivine)
Vesicular Basalt with Amygdaloidal Infill
Basalt (Mafic Extrusive Igneous Rock)
Basalt with Quartz/Calcite matrix
Basalt (SiO2 with Ca/Mg/Fe silicates) on a Mineral Matrix
Basalt River Cobble
Vitreous aphanitic Basalt
Basalt (Water-worn Pebble)
Mafic Volcanic Rock (High in Fe and Mg)
Basalt-Amugydule (Amygdaloidal Basalt)
Aphanitic Mafic Igneous Rock with Vesicle Infillings
Basalt (Polished)
Basalt (Mafic Extrusive Igneous Rock)
Vesicular Basalt
Basalt
Basalt (Road Aggregate / Crushed Stone)
Aphanitic Mafic Igneous Rock
Basalt with Vesicles
Vesicular Basalt (comprising Plagioclase Feldspar, Pyroxene, and Olivine)
Basalt
Mafic Volcanic Rock
Granite River Pebble
Phaneritic Felsic Igneous Rock (Granite)
Tektite (Indochinite)
Tektite (High-silica natural glass)
Granite
Phaneritic Plutonic Felsic Rock
Coarse-grained Granite
Phaneritic Granite (contains Quartz, Feldspar, and Mica)
Vesicular Basalt
Extrusive Mafic Igneous Rock (Vesicular Basalt)