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Basalt is a dark-coloured, fine-grained, mafic igneous rock formed from rapid cooling of low-viscosity lava. It is the most common volcanic rock on Earth and other planetary bodies, and has various forms, such as columnar, pillow, and scoria basalt.
Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals. It most commonly forms as an extrusive rock, such as a lava flow, but can also form in small intrusive bodies, such as an igneous dike or a thin sill. It has a composition similar to gabbro.
Learn about 13 different types of black rocks and minerals, such as basalt, obsidian, and hematite, and their properties and uses. See pictures and examples of these dark beauties from the geological world.
Basalt is a dark-colored, fine-grained volcanic rock that is formed from the cooling of lava. It is one of the most common rock types on Earth and has various applications and geological significance. Learn about its composition, characteristics, types, and occurrence.
Basalt is a dark-colored, fine-grained, extrusive rock that forms from the rapid cooling of magma rich in mafic minerals like plagioclase and pyroxene. Learn about its appearance, chemical and mineral composition, varieties, and how it forms from the QAPF diagram.
Basalt rocks are dark-colored, fine-grained igneous rocks that form from rapid cooling of lava. Learn how to identify basalt, where to find it, and how it influences geology and volcanism.
Basalt is an extrusive igneous rock composed primarily of plagioclase feldspar and large amounts of mafic minerals like pyroxene. It has an aphanitic texture, meaning its interlocking crystals cannot be seen by the naked eye. It is usually dark gray, black, or dark greenish, and is often vesicular or porphyritic.
Basalt is a dark-coloured, low-silica volcanic rock that contains olivine, augite, or feldspar. It can be classified into tholeiitic and alkali basalts based on their chemical and mineral composition.
Basalt is a dark-colored volcanic rock composed of calcic plagioclase, clinopyroxene and iron ore. It is the most common rock type in the crust and forms when mantle rocks partially melt to yield basaltic magma.
Learn about basalt, a dark-colored, dense rock composed of plagioclase feldspar and pyroxene. Find out its chemical composition, weathering, reactivity, types, distribution, and applications in geology and industry.