Granite |
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 GraniteIntrusive igneous rock of felsic composition.Medium-to-coarse crystalline rock composed of small to medium-sized crystal of orthoclase (pink K-spar), quartz (clear to gray), plagioclase (white Na,Ca-feldspar), and muscovite (mica). Peninsular Ranges Eastern granitic intrusive belt. Anza Borrego desert region alluvial gravel deposit near Agua Caliente County Park, California. |
| https://gotbooks.miracosta.edu/rocks/igneous/15.html | 2/2/2021 |