Definition that contains feldspar
- si 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
- granite plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartz
- silicon 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
- spar any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable
- basalt the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene
- moonstone a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar
- orthoclase a white or colored monoclinic feldspar
- oligoclase any of a series of triclinic feldspars that form rocks
- anorthite rare plagioclastic feldspar occurring in many igneous rocks
- atomic number 14 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