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.
Corner and gate postsshould have a diameter of at least 8 inches. Braceposts should be 5 inches or more in diameter.Line posts can be as small as 2 1/2 inches, butlarger diameter posts will make the fence strongerand more durable.Steel posts have several advantages.Theyweigh less, can be driven into the ground rathereasily, wonât rot and are fireproof.n extremely flat land,line posts are generally spaced from 10 to 16 feetapart if the fence is not electrified, to as much as150 feet apart for an electrified fence. Battens orspacers are installed in all dips or at a maximumof 30 feet apart for five strands and 50 feet for twoto three strands.