Look up tour de force in Wiktionary, the free dictionary. Tour de Force may refer to: 1  French phrase, meaning, a feat or display of strength, skill, or ingenuity, such as the funny movie is a comic tour de force.  Tour De Force (tour), 1986 Elton John Concert Tour.
Granite is an igneous rock composed of mostly two minerals: quartz and feldspar. It is an intrusive rock, meaning that it crystallized from magma that cooled far below the earth's surface.
Granite is hard igneous stone that is formed over millions of years by volcanic activity. Magma flows from volcanic activity and slowly cools over millions of years. During the process, magma combines with various minerals including hornblend, feldspar, mica and quartz to create its crystal appearance.