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Andesite
An intermediate-composition igneous rock that is the fine-grained equivalent of diorite; typically gray or greenish-gray, commonly with phenocrysts of cream-colored feldspar or dark amphibole.
Magma Chamber
A reservoir of molten rock beneath the surface of the Earth or a volcano.
Felsic Igneous Rock
Igneous rocks that are rich in silica and light in color, such as granite, characterized by minerals like quartz and feldspar.
Igneous Rock
A type of rock formed through the cooling and solidification of magma or lava, with examples including granite and basalt.
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