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.
Characteristics of rocks. Some rocks are harder than others. For example, granite is a very hard rock, but chalk is a very soft rock and wears away easily. Some rocks, such as sandstone or chalk, let water soak through them.They are called permeable rocks.haracteristics of rocks. Some rocks are harder than others. For example, granite is a very hard rock, but chalk is a very soft rock and wears away easily. Some rocks, such as sandstone or chalk, let water soak through them. They are called permeable rocks.