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 a fairly coarse-grained rock with high contents of quartz and feldspars that is generally very hard and resistant to erosion. Because of its hardness, granite often forms large rock masses which are weathered by wind, rain, snow, and ice into mountains, cliffs, and domes.