nepheline
suomi-englanti sanakirjanepheline englannista suomeksi
nefeliini
Substantiivi
nepheline englanniksi
A feldspathoid mineral of silica-poor igneous, plutonic and volcanic rocks. Chemically, nepheline is a plagioclase feldspar with insufficient silica to satisfy the chemical bonds. Because of the unfilled bonds, nepheline weathers rapidly and can only be seen as inclusions in freshly broken rock.