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Earth material > Volcanic rock
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Felsic volcanic rock
A light-colored, fine-grained or aphanitic extrusive or hypabyssal rock, with or without phenocrysts and composed chiefly of quartz and feldspar.
This category is also used for felsic volcanic rock (aphanitic).
Subtopics:
Alkali-feldspar rhyolite
Rhyolite
Rhyodacite
Dacite
Alkali-feldspar trachyte
Trachyte
Quartz latite
Latite

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