any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable

a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors

Migmatite is a rock that is a mixture of metamorphic rock and igneous rock.

a white or colored monoclinic feldspar

any of a series of triclinic feldspars that form rocks

a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar

a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors

Migmatite is a rock that is a mixture of metamorphic rock and igneous rock.