On 5/26/1976, a category F3 (max. wind speeds 158-206 mph) tornado 4.9 miles away from the city center injured one person and caused between $500,000 and $5,000,000 in damages. Richardson-area historical earthquake activity is slightly below Texas state average.6.5%. According to our research of Texas and other state lists there were 26 registered sex offenders living in Richardson, Texas as of October 14, 2015.
Bronzite is a variety of enstatite that is also associated with hypersthene, which contains silica, magnesium, oxygen, and iron; this is similar to the structure of the serpentine group of minerals. (Bronzite has more iron than enstatite and more magnesium (and less iron) than hypersthenes).
Cementite, also known as iron carbide, is a chemical compound of iron and carbon, with the formula Fe 3 C. Pearlite is a common micro structure occurring in many grades of steels. Pearlite is hard as well as strong because of the layered structure, and is used in a variety of applications.eople can identify pearlite by studying the structure of the alloy. Particularly, under a microscope, it has a very distinctive appearance created by the lamellar bands. Pearlite is around the middle of the chart in terms of strength when compared to other iron alloy phases.