feldspar

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1-10 of 10 possibilities

Definition/MeaningWord/Phrase
widely distributed feldspar that forms rocks albite , white feldspar
rare plagioclastic feldspar occurring in many igneous rocks anorthite
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 atomic number 14 , Si , silicon
commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene basalt
fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper) china clay , china stone , kaolin , kaoline , porcelain clay , terra alba
plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartz granite
transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar moonstone
white or colored monoclinic feldspar orthoclase
any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable spar
any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium; formed in cavities in lava flows and in plutonic rocks zeolite
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