Intrusive because they have large crystals and the have these because they have cooled down much slower then extrusive due to the heat inside the volcano; meaning the crystals took longer to form.
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Diamond is neither an intrusive nor extrusive rock because it is not a rock at all. Diamond is a mineral composed of pure carbon and forms under high pressure and temperature conditions in the Earth's mantle.
Peridot is an extrusive igneous rock, meaning it was formed from lava that cooled and solidified at the Earth's surface.
No, basalt is actually a type of extrusive igneous rock. The most common intrusive rock is granite.
Igneous rock that forms below the Earth's surface is intrusive.
Diorite is an intrusive igneous rock, formed from the cooling and solidification of magma beneath the Earth's surface. It contains a mix of minerals such as plagioclase feldspar, biotite, hornblende, and pyroxene.
Lava is extrusive, meaning it forms on the Earth's surface as a result of volcanic activity. It cools rapidly and solidifies quickly into volcanic rock, such as basalt or obsidian. Intrusive rock, on the other hand, forms below the Earth's surface from magma that cools slowly.