Sci 2144 Join now to read essay Sci 2144 Lashawone Powell October 6, 2005 SCI 2144 The three major types of rocks, igneous, sedimentary, and metamorphic rocks are interrelated by a series of natural processes. Igneous rocks form from the cooling and crystallization of hot molten lava and magma. Igneous rocks undergo weathering and erosion.
Porphyritic Granite Porphyritic Granite Porphyritic granite Porphyritic granite is an igneous rock, which consists of orthoclase feldspar, quartz and orthoclase. This type of rock is made up of two different grain sizes, larger crystals referred to as phenocrysts, and smaller granite sized grains. The name for porophyritic originated from the Latin word porphyry which is.
Rocks Join now to read essay Rocks Earth’s Rocky Surface Igneous Rocks Characteristics of Igneous Rocks ●Igneous rocks may contain crystals, which frequently can be seen by the naked eye. ●Some igneous rocks contain no crystals and appear glassy. ●Igneous rocks may be found in many colors and often show different-colored crystals that are not.
