Basalt
Basalt (containing plagioclase feldspar, pyroxene, and olivine)
igneous
Category
Basalt
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Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Mafic igneous rock (primarily Plagioclase feldspar and Pyroxene)
igneous
Basalt
Basalt (Aphanitic Mafic Rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Extrusive Igneous Rock (Mafic)
igneous
Basalt
Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8
igneous
Basalt
Vesicular Basalt
igneous
Vesicular volcanic rock, likely pumice or scoriaceous basalt
Pumice (highly vesicular volcanic glass) or vesicular basalt; exact identification requires testing
igneous
Basalt
Basalt (Mafic Igneous Rock)
igneous
Basalt
Basalt (extrusive volcanic rock)
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Basalt
Mafic volcanic rock (formula varies by mineral content: Ca-plagioclase, Pyroxene, Olivine)
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Mafic extrusive igneous rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Vesicular basalt (possibly scoriaceous basalt)
Basalt, chiefly plagioclase feldspar, clinopyroxene, and iron-titanium oxides; approximate composition Mg- and Fe-rich mafic silicate rock
igneous
Tumbled vesicular basalt
Vesicular basalt, primarily plagioclase, clinopyroxene, olivine, and volcanic glass
igneous
Weathered basalt cobble
Basalt; fine-grained plagioclase–pyroxene volcanic rock, commonly with olivine
igneous
Basalt with Vesicular/Amygdaloidal Alteration
Extrusive Igneous Rock (Mafic)
igneous
Basalt with vesicles (Amygdaloidal Basalt)
Amygdaloidal Basalt (predominantly Plagioclase and Pyroxene)
igneous
Basalt with Scoria/Vesicular Texture
Vesicular Basalt (Iron-rich/Oxidized)
igneous
Basalt
Basalt (extrusive igneous rock)
igneous
Basalt
Basalt (comprised primarily of plagioclase, pyroxene, and olivine)
igneous
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Basalt
Basalt (Mafic Extrusive)
igneous
Basalt
Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase and pyroxene, commonly with olivine
igneous
Weathered mafic rock, likely basalt or greenstone
Fine-grained basaltic rock; possibly altered basalt (metabasalt/greenstone)
igneous
Rounded basalt pebble
Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, with possible olivine
igneous
Basalt
Aphanitic Mafic Volcanic Rock
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Basalt
Basalt (extrusive volcanic rock)
igneous
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Basalt
Mafic extrusive igneous rock
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Extrusive mafic igneous rock
igneous