A light-colored, coarsely crystalline plutonic rock that consists primarily of potassium feldspars, plagioclase feldspars, and quartz. Granite also may contain mica and other minerals. Builders and architects use this term in a broader sense to indicate any very hard crystalline rock used for building purposes. A solitary coral having a cup or hornlike shape. They are common in many Paleozoic limestones.
Igneous rocks consist of interlocking mineral crystals.
A sedimentary rock composed predominantly of the mineral calcite. A rock resulting from the metamorphism of limestone or dolomite. Builders and architects use this term in a broader sense to denote any stone, typically composed of calcite or dolomite, that is capable of being polished. Marbleizing is commonly done by use of paints and varnishes. The collective name for all of the various processes that alter pre-existing rock buried within the earth.