The "Alphabet Soup" classification is used to divide this type of rock into "I" and "S" types, while the "M" and "A" types are less common. Pegmatite 
The "Alphabet Soup" classification is used to divide this type of rock into "I" and "S" types, while the "M" and "A" types are less common. Pegmatite or this type of rock metamorphoses into the rock type Greisen, and Skarn is a metamorphic rock that forms when carbonate-rich limestone or dolostone mixes with this type of rock. Its extrusive equivalent is rhyolite. For 10 points, name this coarse-grained felsic type of rock that is largely composed of quartz and feldspar, and which makes up continental tectonic plates.
The "Alphabet Soup" classification is used to divide this type of rock into "I" and "S" types, while the "M" and "A" types are less common.
granite