felsic and mafic rocks: Quick Facts

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Facts

Also Known As	acid rock • silicic rock • felsite

Topics

granite petuntse rhyolite dacite granodiorite quartz monzonite I-type granite pantellerite S-type granite rapakivi mafic rock pegmatite spherulite micropegmatite alkaline rock colour index dike sill laccolith crystallite

Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.

(Bed) Rocks and (Flint) Stones