in fact even though biological races do not exist the concept of race obviously is still a reality as is racism these are prevalent and persistent elements of our everyday lives and generally accepted aspects of our culture thus the concept of human races is real
Common Metamorphic Minerals Metamorphic rocks form when pre-existing rocks (igneous, sedimentary, or metamorphic) are exposed to high temperatures and pressures under the Earth's surface. Some pre-existing minerals, unstable at the higher temperature and pressure conditions, transform into new minerals.Others recrystallize and grow larger.etamorphic rocks tend to be dominated by minerals you already know: feldspar, quartz, muscovite, biotite, amphibole, and calcite/dolomite. However, a few minerals are found exclusively or mainly in metamorphic rocks:
11. A regional metamorphic rock with coarse inter-locking grains generally formed under conditions of relatively high pressures and temperatures. 12. A metamorphic rock formed under conditions of high pressure and relatively low temperatures, often contains the minerals glaucophane and kyanite. metamorphic schist containing chlorite and epidote and are formed by low-temperature, low-pressure metamorphism. 14. metamorphism occurs at high-temperatures and pressures, by the crushing and shearing of rock during tectonic movements and resulting in the formation of powdered rock.