Alkali feldspar granite they provide 'crystallized' telltale clues of their environment of formation. Alkali feldspar granite is used as construction material in the form of dimension stones, and polished slabs or tiles for building facades, pavements, and kitchen countertops. Alkali feldspar granite Alkali feldspar granite, some varieties of which are called 'red granite', is a felsic igneous rock and a type of granite rich in the mineral potassium feldspar (K-spar). It is a dense rock with a phaneritic texture. The abundance of K-spar gives the rock a predominant pink to reddish hue; peppered with minor amounts of black minerals. As shown in the
California Coastal Comm'n v. Granite Rock Co. The Coastal Commission did not seek to prohibit mining of the unpatented claim, only to regulate mining activity in accordance with the detailed requirements of the California Coastal Act. Granite Rock filed an action in U.S. District Court claiming that the Coastal Commission permit requirement was preempted by Forest Service regulations, by the Mining Act of 1872, and by the Coastal Zone Management Act. The District Court denied Granite Rock's motion for summary judgment, and dismissed the action. The Court of Appeals for the Ninth Circuit reversed the lower court's decision, holding that the Coastal Commission permit requirement was preempted