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 the signature rock of the continents. More than that, granite is the signature rock of the planet Earth itself. The other rocky planetsâ Mercury, Venus and Marsâare covered with basalt, as is the ocean floor on Earth. But only Earth has this beautiful and interesting rock type in abundance.irst, granite is made of large mineral grains (which is where its name came from) that fit tightly together. Second, granite always consists of the minerals quartz and feldspar, with or without a wide variety of other minerals (accessory minerals).