nepheline
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See also: néphéline
English
[edit]Etymology
[edit]From Ancient Greek νεφέλη (nephélē, “cloud”), because crystals become cloudy when exposed to acid, + -ine.
Noun
[edit]nepheline (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
[edit]Derived terms
[edit]Translations
[edit]feldspathoid mineral
Further reading
[edit]- David Barthelmy (1997–2024) “Nepheline”, in Webmineral Mineralogy Database.
- “nepheline”, in Mindat.org[1], Hudson Institute of Mineralogy, 2000–2024.