nepheline

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See also: néphéline

English

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Nepheline
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Etymology

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From Ancient Greek νεφέλη (nephélē, cloud), because crystals become cloudy when exposed to acid, +‎ -ine.

Noun

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nepheline (countable and uncountable, plural nephelines)

  1. (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

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Derived terms

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Translations

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Further reading

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  • David Barthelmy (1997–2024) “Nepheline”, in Webmineral Mineralogy Database.
  • nepheline”, in Mindat.org[1], Hudson Institute of Mineralogy, 2000–2024.