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.
The main minerals in granite are quartz, feldspar, hornblende and mica. These minerals are extremely hard, making granite one of the hardest materials found in nature, second only to diamond.Because granite is so hard, it resists scratching, chipping, and discoloration due to heat, making it ideally suited for countertops in your home.he main minerals in granite are quartz, feldspar, hornblende and mica. These minerals are extremely hard, making granite one of the hardest materials found in nature, second only to diamond.