River Pebble (Basalt)
Basalt (Aphanitic Mafic Igneous Rock)
Category
Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.
River Pebble (Basalt)
Basalt (Aphanitic Mafic Igneous Rock)
Basalt
Basalt (Mafic volcanic rock)
Basalt
Aphanitic Mafic Igneous Rock
Basalt with Quartz Veins
Basalt (SiO2 range 45-52%)
Basalt
Basalt (composition: Plagioclase, Pyroxene, and Olivine)
Basalt River Stone
Basalt (Aphanitic Mafic Igneous Rock)
Diabase (Dolerite)
Mafic Intrusive Igneous Rock
Porphyritic Andesite
Andesite (Porphyry)
Basalt
Basalt (Mafic igneous rock)
Basalt
Basalt
Basalt
Basalt (Mafic volcanic rock)
Basalt
Basalt (Mafic volcanic rock)
Basalt
Basalt (composition of plagioclase feldspar and pyroxene)
Basalt
Basalt
Basalt
Basalt
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Basalt (River Pebble)
Basalt
Olivine in Basalt matrix
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
Basalt Pebble
Basalt
Basalt
Basalt (Mafic volcanic rock)
Basalt
Basalt (Mafic volcanic rock)
Basalt
Extrusive mafic igneous rock
Basalt with Quartz/Calcite Inclusions
Mafic Volcanic Rock (Fe-Mg silicate rich)
Basalt (Polished River Stone)
Mafic Volcanic Rock (primarily Plagioclase and Pyroxene)
Basalt
Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
Basalt
Extrusive mafic igneous rock
Basalt (Road Gravel)
Aphanitic mafic volcanic rock (various compositions of plagioclase feldspar and pyroxene)
Basalt
Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)
Basalt
Basalt
Basalt River Stone
Basalt
Basalt (River-worn Specimen)
Extrusive Mafic Igneous Rock
Basalt
Extrusive mafic igneous rock
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Basalt Pebble
Basalt (Aphanitic Mafic Igneous Rock)
Basalt River Stone
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
Basalt (River Pebble)
Basalt (Aphanitic Mafic Igneous Rock)
Vesicular Basalt
Basalt with vesicular texture
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Basalt
Extrusive mafic igneous rock
Basalt Pebble
Aphanitic mafic volcanic rock
Basalt (Gravel Pebble)
Basalt (contains pyroxene, plagioclase feldspar, and olivine)
Basalt
Mafic volcanic rock (Basalt)