Granite
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Solar Energy
A coarse-grained felsic intrusive (or plutonic) igneous rock with at least 65% silica. Quartz, plagioclase feldspar, and potassium feldspar make up most of the rock and give it a fairly light color; the plutonic equivalent of rhyolite.
- — Solar Energy Development PEIS Glossary retrieved 2014-06-15
Water
Light-colored, coarse-grained intrusive igneous rock with quartz and feldspar as dominant minerals and typically peppered with mica and hornblende.