Feldspar Twinning: @ least 7 types of twinning are exhibited by feldsparsFeldspar frequently exhibits phase changes in what may appear externallyas a single crystal but actually represents two or more individuals.
Picket fences serve two purposes: They keep unwanted traffic out, but they also add a design element to houses and yards. Generally, picket fences are smaller than standard fences, standing no more than 4 feet high. Picket fence boards are generally 3 to 3.5 inches wide with the shapes of the tops varying by preference.Fences, however, can also be as wide as 5.5 inches or as small as 1.5 inches.The four main types of picket fence styles are the flat top, French Gothic, Gothic and dog ear, and the most popular colors for picket fences are either natural or white.icket fences serve two purposes: They keep unwanted traffic out, but they also add a design element to houses and yards. Generally, picket fences are smaller than standard fences, standing no more than 4 feet high. Picket fence boards are generally 3 to 3.5 inches wide with the shapes of the tops varying by preference.
The wood materials that make up a fence include pickets, rails, and posts. 1  Pickets are the vertical boards that make up the finished surface of a fence. 2  They are typically 1/2 â 1 thick, by 4 â 6 wide. 3  Rails are the horizontal members to which the pickets are fastened.rive a nail into the center of the wood stake and run a line of string tautly from stake to stake. Fence posts are commonly spaced 6' to 8' apart. Starting at one corner or an end, measure the appropriate distance to the next post. Define the center of this post and mark the location with a wood stake.