nepheline
See also: néphéline
English
editEtymology
editFrom Ancient Greek νεφέλη (nephélē, “cloud”), because crystals become cloudy when exposed to acid, + -ine.
Noun
editnepheline (countable and uncountable, plural nephelines)
- (mineralogy) 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.
Synonyms
editDerived terms
editTranslations
editfeldspathoid mineral
Further reading
edit- David Barthelmy (1997–2024) “Nepheline”, in Webmineral Mineralogy Database.
- “nepheline”, in Mindat.org[1], Hudson Institute of Mineralogy, 2000–2024.