Box vents are not mechanical vents and work better when used with soffit ventilation. They're designed to work with open attics and do not need to be placed close to roof ridges to work optimally. They are also known as low profile vents because they are static and installed over a hole cut into the roof.
Stone Mountain is made of igneous granite which is composed of quartz, feldspar, microcline and muscovite, with smaller amounts of biotite and tourmaline. Embedded in the gran â¦ ite are xenoliths or pieces of foreign rocks entrained in the magma. 13 people found this useful. T.E. Woodwose.
Untreated Rough Turquoise from Stone Mountain Mine Quicklinks: Blue turquoise - Green turquoise - Turquoise nuggets - Turquoise slabs - Turquoise chips * All of the rough turquoise you see here is from Stone Mountain Mine. The Stone Mountain deposit has many interesting geological traits. The area has a large variety of mineral combinations that are sometime visible on the surface rocks. The turquoise formed in an area with a high percentage of Limonite a mineral formed by the presence of iron.