Tag: Granite

Granite ( /ˈɡrænɨt/) is a common and widely occurring type of intrusive, felsic, igneous rock. Granite usually has a medium- to coarse-grained texture. Occasionally some individual crystals (phenocrysts) are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic texture is sometimes known as a porphyry. Granites can be pink to gray in color, depending on their chemistry and mineralogy. By definition, granite is an igneous rock with at least 20% quartz by volume. Granite differs from granodiorite in that at least 35% of the feldspar in granite is alkali feldspar as opposed to plagioclase; it is the alkali feldspar that gives many granites a distinctive pink color. Outcrops of granite tend to form tors and rounded massifs. Granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels. Granite is usually found in the continental plates of the Earth’s crust.
Granite…

Granite CO Skateboard Lessons!

Discover Skateboarding in a 7 Day Lesson

Skateboarding is a recreational activity, an art form, or a method of transportation. Skateboarding has been molded and influenced by many skateboarders throughout the ages. A 2002 survey and study by American Sports Data found that there are 18.5 million skaters in the world. 85 percent…

Granite OK Skateboard Lessons!

Learn Skateboarding in a Week-Long Class

Do you want to learn skateboarding?
Is the fear of falling keeping you from progressing? Study all of the basics of skateboarding fast in a one-week camp. We will show you the basics of skateboarding like how to balance, push, turn, proper foot placement, and how to…

Granite MD Skateboard Lessons!

Improve Your Skateboarding in a Two Week-Long School

Do you want to learn how to skateboard?
Study all of the basic principles of skateboarding fast in a one-week camp. We will show you the basics of skateboarding such as how to balance, push, turn, proper foot placement, and how to stop. Regardless, of…