Granite general, descriptive field term for lighter-colored, coarse-grained igneous rocks. Petrographic examination is required for identification of specific types of granitoids. The extrusive igneous rock equivalent of granite is rhyolite. Granite is nearly always massive (i.e., lacking any internal structures), hard, and tough. These properties have made granite a widespread construction stone throughout human history. The average density of granite is between , its compressive strength usually lies above 200 MPa, and its viscosity near STP is 3–6·10 Pa·s. The melting temperature of dry granite at ambient pressure is ; it is strongly reduced in the presence of water, down to
Granite spiny lizard Granite spiny lizard The granite spiny lizard (Sceloporus orcutti) is a species of phrynosomatid lizard. The epithet, "orcutti", honors American naturalist Charles Russell Orcutt (1864–1929), who collected the type specimen in San Diego County, California. It is endemic to southern California in the United States and Baja California in Mexico. The granite spiny lizard is snout-to-vent length. Maximum total length including the tail is . Its dorsal scales are strongly keeled and pointed on its body and tail. It has a wide purple mid-dorsal stripe. The males of the species have yellow-green and blue-centered scales on the body; juveniles and